UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

(Mark  One)
    [X]       ANNUAL  REPORT  PURSUANT  TO SECTION 13 OR 15(d) OF THE SECURITIES
              EXCHANGE  ACT  OF  1934
              FOR  THE  FISCAL  YEAR  ENDED  DECEMBER  31,  2002

    [ ]       TRANSITION  REPORT  PURSUANT  TO  SECTION  13  OR  15(d)  OF  THE
              SECURITIES  EXCHANGE  ACT  OF  1934
              For  the  transition  period  from  ___________  to  ___________

                        Commission file number 001-15565

                               SEMCO ENERGY, INC.
             (Exact name of registrant as specified in its charter)

               MICHIGAN                             38-2144267
     (State  of  incorporation)        (I.R.S. Employer Identification No.)

  28470 13 MILE ROAD, SUITE 300, FARMINGTON HILLS, MICHIGAN         48334
         (Address  of  principal  executive  offices)            (Zip  Code)

                                  248-702-6000
            (Registrant's  telephone  number,  including  area  code)

Securities  registered  pursuant  to  Section  12(b)  of  the  Act:



                                                Name  of  each  exchange  on
     Title  of  each  class                          which  registered
     -------------------------------------      ----------------------------
                                             
     COMMON  STOCK,  $1  PAR  VALUE             NEW  YORK  STOCK  EXCHANGE
     FELINE  PRIDES                             NEW  YORK  STOCK  EXCHANGE
     10 1/4%  TRUST  PREFERRED  SECURITIES      NEW  YORK  STOCK  EXCHANGE



Securities  registered  pursuant  to  Section  12(g)  of  the  Act:  None

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding  12  months  (or  for such shorter period that the registrant was
required  to  file  such  reports),  and  (2)  has  been  subject  to  such
filing  requirements  for  the  past  90  days.  Yes  [X]       No  [ ]

Indicate  by  check mark if disclosure of delinquent filers pursuant to Item 405
of  Regulation  S-K  is  not contained herein, and will not be contained, to the
best  of  registrant's  knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form  10-K.  [X]

Indicate  by  check  mark  whether  the  registrant  is an accelerated filer (as
defined  in  Rule  12b-2  of  the  Act).  Yes  [X]       No  [ ]

The  aggregate  market  value  of  the  Registrant's  Common  Stock  held  by
non-affiliates  as  of June 28, 2002 was $148,663,101 based on 16,426,862 shares
held  by  non-affiliates  and  the  closing price of $9.05 on that day (New York
Stock  Exchange).

Number of outstanding shares of the Registrant's Common Stock as of February 28,
2003:  18,841,758

                      DOCUMENTS INCORPORATED BY REFERENCE:

Portions  of  Registrant's  definitive  Proxy  Statement  (filed  pursuant  to
Regulation  14A)  with respect to Registrant's  April 15, 2003 Annual Meeting of
Common  Shareholders are incorporated by reference in Part III.  Portions of the
Registrant's  2002  Annual  Report  to Shareholders (filed as Exhibit 13 to this
Form 10-K) are incorporated by reference in Part I, Item 1 and Part II, Items 5,
6,  7,  7A  and  8.




                         T A B L E  O F  C O N T E N T S

                                                                           PAGE
CONTENTS                                                                  NUMBER

                                                                       
KEY  TO  ABBREVIATED  TERMS . . . . . . . . . . . . . . . . . . . . . .      1

INFORMATION  ABOUT  FORWARD-LOOKING  STATEMENTS . . . . . . . . . . . .      2

PART  I

ITEM     1.     BUSINESS. . . . . . . . . . . . . . . . . . . . . . . .      2

ITEM     2.     PROPERTIES. . . . . . . . . . . . . . . . . . . . . . .      8

ITEM     3.     LEGAL  PROCEEDINGS. . . . . . . . . . . . . . . . . . .     10

ITEM     4.     SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS . .     10

PART  II

ITEM     5.     MARKET  FOR  THE  REGISTRANT'S  COMMON  EQUITY  AND
                RELATED  STOCKHOLDER  MATTERS . . . . . . . . . . . . .     10

ITEM     6.     SELECTED  FINANCIAL  DATA . . . . . . . . . . . . . . .     14

ITEM     7.     MANAGEMENT'S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL
                CONDITION  AND  RESULTS  OF  OPERATIONS . . . . . . . .     14

ITEM     7A.    QUANTITATIVE  AND  QUALITATIVE  DISCLOSURES  ABOUT
                MARKET  RISKS . . . . . . . . . . . . . . . . . . . . .     14

ITEM     8.     FINANCIAL  STATEMENTS  AND  SUPPLEMENTARY  DATA . . . .     14

ITEM     9.     CHANGES  IN  AND  DISAGREEMENTS  WITH  ACCOUNTANTS  ON
                ACCOUNTING  AND  FINANCIAL  DISCLOSURE. . . . . . . . .     15

PART  III

ITEM    10.     DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT. . .     15

ITEM    11.     EXECUTIVE  COMPENSATION . . . . . . . . . . . . . . . .     15

ITEM    12.     SECURITY  OWNERSHIP  OF  CERTAIN  BENEFICIAL  OWNERS
                AND  MANAGEMENT . . . . . . . . . . . . . . . . . . . .     15

ITEM    13.     CERTAIN  RELATIONSHIPS  AND  RELATED  TRANSACTIONS. . .     15

ITEM    14.     CONTROLS  AND  PROCEDURES . . . . . . . . . . . . . . .     15

PART  IV

ITEM    15.     EXHIBITS,  FINANCIAL  STATEMENT  SCHEDULES,  AND  REPORTS
                ON  FORM  8-K . . . . . . . . . . . . . . . . . . . . .     16

SIGNATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     22

CERTIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .     23






KEY  TO  ABBREVIATED  TERMS



                 
APB. . . . . . . .  Accounting  Principles  Board
ATS. . . . . . . .  (Aggregated  Transportation  Service)  a program that allows
                    commercial  and  industrial  gas  distribution  customers in
                    Michigan  to  purchase  their  gas  from  third-party  gas
                    suppliers, with the Company transporting the gas
Bcf. . . . . . . .  A  quantity of natural gas volumes equivalent to one billion
                    cubic  feet
CCBC . . . . . . .  City  Commission  of  Battle  Creek,  Michigan
Degree Day . . . .  A  measure of coldness computed by the number of degrees the
                    average  daily temperature falls below 65 degrees Fahrenheit
DRIP . . . . . . .  Direct  Stock  Purchase  and  Dividend  Reinvestment  Plan
Dth. . . . . . . .  (Dekatherm)  a  quantity  of  heat  energy equivalent to one
                    million  Britsh  Thermal  Units  (BTU)
FASB . . . . . . .  Financial  Accounting  Standards  Board
FERC . . . . . . .  Federal  Energy  Regulatory  Commission
GCA. . . . . . . .  (Gas  Cost  Adjustment)  a  process  by  which  the  Gas
                    Distribution  business,  through annual gas cost proceedings
                    before  the RCA, can recover the prudent and reasonable cost
                    of  gas  sold
GCR. . . . . . . .  (Gas  Cost Recovery) a process by which the Gas Distribution
                    Business,  through  annual  gas  cost proceedings before the
                    MPSC or CCBC, can recover the prudent and reasonable cost of
                    gas  sold
Mcf. . . . . . . .  A quantity of natural gas volumes equivalent to one thousand
                    cubic feet
MMcf . . . . . . .  A  quantity of natural gas volumes equivalent to one million
                    cubic feet
MPSC . . . . . . .  Michigan  Public  Service  Commission
RCA. . . . . . . .  Regulatory  Commission  of  Alaska
SFAS . . . . . . .  Statement  of  Financial  Accounting  Standards
Tcf. . . . . . . .  A quantity of natural gas volumes equivalent to one trillion
                    cubic feet.


                                      - 1 -


INFORMATION  ABOUT  FORWARD-LOOKING  STATEMENTS

This  document  contains  forward-looking  statements  within the meaning of the
Private  Securities  Litigation  Reform  Act  of  1995 that are based on current
expectations,  estimates  and  projections  of  SEMCO  Energy,  Inc.  and  its
subsidiaries  (the  "Company").  Statements  that  are  not  historical  facts,
including  statements  about  the  Company's outlook, beliefs, plans, goals, and
expectations,  are  forward-looking statements.  These statements are subject to
potential  risks  and  uncertainties  and,  therefore, actual results may differ
materially.  The  Company  undertakes  no  obligation  to  update  publicly  any
forward-looking statements whether as a result of new information, future events
or  otherwise.  Factors  that may impact forward-looking statements include, but
are  not limited to, the following: (i) the effects of weather and other natural
phenomena;  (ii) the economic climate and growth in the geographical areas where
the  Company  does business; (iii) the capital intensive nature of the Company's
business;  (iv) increased competition within the energy industry as well as from
alternative  forms  of energy; (v) the timing and extent of changes in commodity
prices  for natural gas and propane; (vi) the effects of changes in governmental
and  regulatory  policies,  including income taxes, environmental compliance and
authorized  rates;  (vii)  the  Company's ability to bid on and win construction
contracts;  (viii)  the  impact  of  energy prices on the amount of projects and
business  available  to  the  Company's construction services business; (ix) the
nature,  availability  and  projected  profitability  of  potential  investments
available to the Company; (x) the Company's ability to remain in compliance with
its  debt  covenants  and  accomplish  its  financing objectives in a timely and
cost-effective  manner  in  light of changing conditions in the capital markets;
(xi)  the  Company's  ability  to  operate  and integrate acquired businesses in
accordance with its plans and (xii) the Company's ability to effectively execute
its  strategic  plan.



                                     PART I


ITEM  1.          BUSINESS

SEMCO  ENERGY,  INC.

SEMCO  Energy,  Inc. is a diversified energy and infrastructure services company
headquartered  in southeastern Michigan.  It was founded in 1950 as Southeastern
Michigan  Gas  Company.  SEMCO Energy, Inc. and its subsidiaries (the "Company")
operate  four  reportable  business  segments:  (1)  gas  distribution;  (2)
construction  services;  (3)  information  technology services; and (4) propane,
pipelines  and  storage.  The  latter  three  segments are sometimes referred to
together  as  the  "diversified  businesses".  Certain  smaller  subsidiaries or
divisions  of the Company are not part of the four previously mentioned business
segments.  Instead,  they are included together in a category the Company refers
to  as  "Corporate  and  other".  For information on what constitutes a business
segment,  refer to Note 11 of the Notes to the Consolidated Financial Statements
on page 58 through 59 of the Company's 2002 Annual Report to Shareholders, which
information  is  incorporated  herein  by reference from Exhibit 13 to this Form
10-K.  The  Company  had  approximately  1,592  employees  at December 31, 2002.
     In  December,  2001,  the  Company's  board  of directors approved plans to
redirect  the Company's business strategy.  The plans involved the restructuring
of  the  Company's  corporate,  business unit and operational structures and the
divestiture  of  the  Company's  engineering services business.  The Company has
accounted  for  and  reported its engineering services segment as a discontinued
operation.  In  November  2002,  the  Company  sold  its  engineering  services
business.  For  additional  information  on  the Company's strategic redirection
plans  and the divestiture of its engineering services business refer to Note 14
of  the  Notes  to  the  Consolidated  Financial  Statements  on  page 62 of the
Company's  2002 Annual Report to Shareholders, which information is incorporated
herein  by  reference  from  Exhibit  13  to  this  Form  10-K.

                                      - 2 -

     The  Company  maintains  a  website  on  the  Internet  at  address
http://www.semcoenergy.com.  The  Company  makes  available free of charge on or
- --------------------------
through  its  website, its annual report on Form 10-K, quarterly reports on Form
10-Q,  current  reports on Form 8-K, and any amendments to those reports as soon
as  reasonably  practicable after such material is electronically filed with the
Securities  and  Exchange  Commission  ("SEC").  This reference to the Company's
Internet  address  shall  not, under any circumstances, be deemed to incorporate
the  information  available  at  such Internet address into this Form 10-K.  The
information available at the Company's Internet address is not part of this Form
10-K or any other report filed by the Company with the SEC.  The information the
Company  filed  with  the  SEC  can also be obtained on the SEC's website on the
Internet  at  address  http://www.sec.gov.
                       ------------------

GAS  DISTRIBUTION

The  Company's  gas  distribution  business  segment  consists  of operations in
Michigan  and Alaska.  The Michigan operation is sometimes referred to as "SEMCO
Gas"  and  the  Alaska  operation  is  sometimes referred to as "ENSTAR".  These
operations  are  referred  to  together  as  the  "Gas  Distribution  Business".
     SEMCO  Gas  and  ENSTAR  Natural  Gas Company operate as divisions of SEMCO
Energy,  Inc.  Alaska Pipeline Company operates as a subsidiary of SEMCO Energy,
Inc.  and  as  part  of  the  ENSTAR  operations.
     The  Gas  Distribution  Business  distributes and transports natural gas to
residential,  commercial  and  industrial customers and is the Company's largest
business  segment.  Set forth in the table below is gas sales and transportation
information  for  the  past  three  years:




Years ended December 31,                     2002      2001      2000
- -----------------------------------------  --------  --------  --------
                                                      

GAS SALES REVENUE (IN THOUSANDS):
  Residential . . . . . . . . . . . . . .  $227,086  $201,754  $190,221
  Commercial. . . . . . . . . . . . . . .    84,480    73,831    62,354
  Industrial. . . . . . . . . . . . . . .    24,089    19,812    18,412
                                           --------  --------  --------
    Total gas sales revenue (a) . . . . .  $335,655  $295,397  $270,987
                                           ========  ========  ========

GAS TRANSPORTATION REVENUE (IN THOUSANDS)  $ 25,707  $ 25,888  $ 30,783
                                           ========  ========  ========

VOLUMES OF GAS SOLD (MMCF):
  Residential . . . . . . . . . . . . . .    42,671    41,529    41,397
  Commercial. . . . . . . . . . . . . . .    16,970    16,032    14,591
  Industrial. . . . . . . . . . . . . . .     5,416     5,566     5,066
                                           --------  --------  --------

    Total volumes of gas sold (a) . . . .    65,057    63,127    61,054

VOLUMES OF GAS TRANSPORTED (MMCF) . . . .    44,921    42,992    48,706
                                           --------  --------  --------
TOTAL VOLUMES DELIVERED (a) . . . . . . .   109,978   106,119   109,760
                                           ========  ========  ========

<FN>
(a)  Does not include the sale of excess inventory gas to a third party in 2000.



     Refer  to  Note 11 of the Notes to the Consolidated Financial Statements on
pages  58  and  59  of  the  Company's 2002 Annual Report to Shareholders, which
information  is  incorporated  herein  by reference from Exhibit 13 to this Form
10-K,  for  the operating revenues, operating income, assets and other financial
information  of  the  Gas  Distribution  Business  for  the  past  three  years.

GAS  SALES  Gas  sales  revenue  is  generated  primarily  through  the sale and
delivery  of  natural  gas  to  residential  and  commercial  customers.  These
customers  use  natural  gas  mainly  for space heating purposes.  Consequently,
weather  has a significant impact on sales.  Given the impact of weather on this
business  segment,  most  of  its  gas  sales revenue is earned in the first and
fourth  quarters  of  the  calendar year.  Revenues from gas sales accounted for
70%,  66%  and  67%  of  consolidated operating revenues in 2002, 2001 and 2000,
respectively.

                                      - 3 -

     Competition  in the gas sales market arises from alternative energy sources
such  as  electricity,  propane and oil.  However, this competition is inhibited
because of the time, inconvenience and investment for residential and commercial
customers to convert to an alternate energy source when the price of natural gas
fluctuates.  For  more  information  on  competition  for  the  Gas Distribution
Business, refer to the section titled "Outlook for Gas Distribution" on pages 21
and 22 of the Company's 2002 Annual Report to Shareholders, which information is
incorporated  herein  by  reference  from  Exhibit  13  to  this  Form  10-K.
     The  Company's aggregated transportation service ("ATS") program, which was
effective  April 1, 1998 through March 31, 2002, provided all Michigan customers
the  opportunity  to  purchase  their  gas  from  a  third-party supplier, while
allowing  the  Gas  Distribution  Business  to  continue  charging  the existing
distribution  fees  and  customer  fees  plus  a  gas  load balancing fee.  In a
Michigan  Public Service Commission ("MPSC") order issued in August 2002 the ATS
program  was  renamed  to  the Gas Customer Choice Program and expanded over the
years 2002, 2003 and 2004 such that by April of 2004 it will be available to all
customers  in  the  Company's service area regulated by the MPSC.  There were no
customers  taking  service under the Gas Customer Choice Program at December 31,
2002.  Refer  to  the sections titled "Gas Sales Margin" and "Gas Transportation
Revenue" on pages 19 and 20 of the Company's 2002 Annual Report to Shareholders,
which  information  is  incorporated herein by reference from Exhibit 13 to this
Form  10-K,  for  further information regarding the impact of the ATS program on
gas  sales  and  transportation  revenue  during  2002,  2001  and  2000.


TRANSPORTATION  The  Gas  Distribution Business provides transportation services
to  its  large-volume  commercial and industrial customers.  This service offers
those  customers the option of purchasing natural gas directly from producers or
marketing  companies  and  utilizing the Gas Distribution Business' distribution
network  to  transport  the  gas  to  their  facilities.
     Alaska  Pipeline  Company  ("APC")  owns  and operates the only natural gas
transmission  lines  in its service area that are operated for utility purposes.
APC's  transmission  system  delivers  natural  gas  from  producing  fields  in
southcentral  Alaska to ENSTAR's Anchorage-based gas distribution system.  APC's
only  customer  is  ENSTAR  Natural  Gas  Company.
     The market price of alternate energy sources such as coal, electricity, oil
and  steam  is  the  primary  competitive  factor  affecting  the  demand  for
transportation  services.  Certain  large industrial customers have some ability
to  convert  to  another  form  of  energy if the price of natural gas increases
significantly.  Partially  offsetting  the  impact of price sensitivity has been
the  use  of  natural gas as an industrial fuel because of clean air legislation
and  the  resultant  pressures  on  industry  and  electric  utilities to reduce
emissions  from  their  plants.  For  more  information  regarding the impact of
alternative  energy sources, refer to the "Outlook for Gas Distribution" section
on  pages  21  and 22 of the Company's 2002 Annual Report to Shareholders, which
information  is  incorporated  herein  by reference from Exhibit 13 to this Form
10-K.
     Consistent  with  other gas distribution utilities, there has been downward
pressure  on  transportation  rates  due  to  the  potential risk for industrial
customers  and  electric  generating  plants,  located  in  close  proximity  to
interstate  natural gas pipelines, to bypass the Company and connect directly to
such  pipelines.  However,  management  is  currently unaware of any significant
bypass  efforts by the Company's customers.  The Company has addressed and would
continue  to  address  any  such  efforts  by offering special services and rate
arrangements  designed  to  retain  these  customers  on  the  Company's system.
Customers  in  ENSTAR's service territory are currently precluded from bypassing
ENSTAR's  transportation and distribution system due to the limited availability
of gas transmission systems and the large distances between producing fields and
the  locations  of  current  customers.

CUSTOMER  BASE  At  December  31,  2002,  SEMCO  Gas  had  approximately 272,000
customers.  The  largest  concentration  of customers, approximately 113,000, is
located  in southeastern Michigan.  The remaining Michigan customers are located
in  and  around  the following communities: Battle Creek, Albion, Holland, Three
Rivers,  Niles,  Marquette  and Houghton.  The Michigan customer base is diverse
and  includes  residential,  commercial  and  industrial customers.  The largest
customers  include  power  plants,  food production facilities, paper processing
plants,  furniture  manufacturers  and  others in a variety of other industries.
The  average  number  of  customers  in  Michigan has increased by an average of
approximately  2.4% annually during the past three years.  By comparison, recent
surveys  by  the American Gas Association indicate that the customer growth rate
for  the U.S. gas distribution industry has averaged approximately 1.8% annually
during  the  past ten years.  However, average annual gas usage per customer has
been  decreasing  slightly because new homes and appliances are much more energy
efficient.

                                      - 4 -

     At  December  31,  2002,  ENSTAR had approximately 111,000 customers in and
around  the  Anchorage,  Alaska area including the communities of Big Lake, Bird
Creek,  Butte,  Chugiak, Eagle River, Eklutna, Girdwood, Houston, Indian, Kenai,
Knik,  Nikiski,  Palmer,  Peters Creek, Portage, Sterling, Soldotna, Wasilla and
Whittier.  ENSTAR  is  the  sole  distributor  of  natural  gas  to  the greater
Anchorage  metropolitan area, and its service area encompasses approximately 50%
of  the  population of Alaska.  ENSTAR has two types of customers: gas sales and
transportation.  Gas  sales  customers are primarily residential and commercial.
ENSTAR  provides  transportation  service,  on  behalf  of gas producers and gas
marketers,  to  power  plant  sites,  a  liquified natural gas plant, an ammonia
plant, and hundreds of commercial locations.  The average number of customers at
ENSTAR  has  increased  by  an average of approximately 2.8% annually during the
past  three  years.

RATES  AND  REGULATION  The  Gas Distribution business is subject to regulation.
The regulatory matters associated with gas distribution customers located in the
City  of  Battle  Creek, Michigan and surrounding communities are subject to the
jurisdiction  of  the  City  Commission  of Battle Creek ("CCBC").  The Michigan
Public  Service Commission ("MPSC") has jurisdiction over the regulatory matters
related  to  the Company's remaining Michigan customers.  Regulatory matters for
gas  distribution  customers  in  Alaska  are subject to the jurisdiction of the
Regulatory  Commission  of  Alaska  ("RCA").  These  regulatory  bodies  have
jurisdiction  over,  among  other  things,  rates,  accounting  procedures,  and
standards  of  service.
     For  information  on regulatory matters including recent regulatory orders,
filings  and  rate  cases,  refer  to  Note  2  of the Notes to the Consolidated
Financial  Statements on pages 45 through 47 of the Company's 2002 Annual Report
to  Shareholders,  which  information  is  incorporated herein by reference from
Exhibit  13  to  this  Form  10-K.

GAS  SUPPLY   SEMCO  Gas  entered  into  new  agreements  with  BP Canada Energy
Marketing  Corp.  ("BP")  effective  April  1,  2002.  The  Company has separate
agreements  with  BP  related  to customers in its service area regulated by the
MPSC  ("MPSC customers") and customers in its service area regulated by the CCBC
("CCBC  customers").  Under  the  agreements  related  to  the  Company's  CCBC
customers,  BP  provides all of the natural gas supply requirements for the CCBC
customers  as  well  as  transportation  and  storage asset management services.
Under  the  terms  of  the  agreements,  the  price the Company pays to purchase
natural gas for CCBC customers is fixed for the three-year period covered by the
agreements,  which  is  from  April  1,  2002  through  March  31,  2005.
     Under the new BP agreements covering MPSC customers, BP provides gas supply
portfolio  management  services  as  well  as  transportation  and storage asset
management services.  The Company no longer purchases gas at a fixed cost over a
number  of  years.  In  keeping  with  the Company's switch back to the gas cost
recovery  ("GCR")  pricing mechanism for MPSC customers, the Company is required
to  solicit  bids  for  all  supplies  with term lengths longer than three days.
Supplies  with  term  lengths  of three days or less are purchased from BP.  For
additional  information  about how these contracts and the GCR pricing mechanism
impact  cost  of  gas,  refer  to the "Cost of Gas" section within Note 1 of the
Notes  to  the  Consolidated  Financial  Statements  on  pages  43 and 44 of the
Company's  2002 Annual Report to Shareholders, which information is incorporated
herein  by  reference  from  Exhibit  13  to  this  Form  10-K.
     SEMCO  Gas  has access to natural gas supplies throughout the United States
and  Canada via major interstate pipelines that run through Michigan.  SEMCO Gas
has  pipeline  capacity  contracts  with  ANR  Pipeline Company, Great Lakes Gas
Transmission  Company,  Northern Natural Gas Company, and Panhandle Eastern Pipe
Line  Company.  SEMCO  Gas  also owns underground storage facilities in Michigan
with a working capacity of 5 billion cubic feet ("Bcf").  In addition, it leases
6.5  Bcf  of  storage  from  Eaton  Rapids  Gas  Storage System and 2.3 Bcf from
non-affiliates  in  Michigan.  The  owned  and  leased  storage  capacity equals
approximately  32%  of  the Company's 2002 annual gas sales volumes in Michigan.
SEMCO  Gas Storage Company, a subsidiary of the company, is a 50% owner of Eaton
Rapids  Gas  Storage  System.
     ENSTAR  has a gas purchase contract (the "Marathon Contract") with Marathon
Oil  Company  ("Marathon")  that  has  been  approved  by  the  RCA  and  is  a
"requirements"  contract  with  no  specified  daily  deliverability  or  annual
take-or-pay  quantities.  Through  2001,  Marathon  agreed  to  deliver  all  of
ENSTAR's  gas  requirements  in excess of those provided for in other gas supply
contracts  in  existence as of May 1, 1988, subject to certain exceptions, until
the  commitment  has  been  exhausted.  For  2002 and subsequent years, ENSTAR's
purchase  obligations  and  Marathon's delivery obligations are set at specified
annual  amounts  (19 Bcf in 2003).  The contract has a base price and is subject
to  an  annual  adjustment  based  on changes in the price of certain traded oil
futures  contracts plus reimbursement for any severance taxes and other charges.

                                      - 5 -

     ENSTAR also has an RCA-approved gas purchase contract with the Municipality
of  Anchorage,  Chevron  U.S.A.,  Inc.  and  ARCO  Alaska,  Inc.  (the  "Beluga
Contract"),  which  provides  for the delivery of up to approximately 220 Bcf of
gas  through  the year 2009 from the Beluga field.  The pricing mechanism in the
Beluga  Contract  is  similar  to  that  contained  in  the  Marathon  Contract.
     In  May  2000,  ENSTAR signed a gas supply contract with Anadarko Petroleum
and  Phillips  Alaska (formerly ARCO Alaska) for natural gas deliveries from the
Moquawkie gas field beginning in 2002 ("the Moquawkie Contract").  The agreement
provides  that  Anadarko  and  Phillips  will  supply ENSTAR's additional supply
requirements  through 2003, and supply a portion of ENSTAR's needs through 2016.
The  contract  has  a base price, subject to annual adjustment based upon 50% of
the  change  in certain inflation measures, plus reimbursement for any severance
taxes and other charges.  The contract was approved by the RCA in July 2000.  In
2002,  the  Moquawkie  field  was  sold and the gas supply obligations under the
Moquawkie  Contract  were  assigned  to  the purchaser of the field, Aurora Gas.
     In  November  2000,  ENSTAR  signed  a  gas  supply contract with Union Oil
Company  of  California ("Unocal") for natural gas deliveries beginning in 2004.
The  agreement  provides  that  Unocal  will  supply  ENSTAR's additional supply
requirements  through  2005,  and  supply  all or a portion of ENSTAR's needs in
years  beyond 2005 based upon additional commitments that may be made by Unocal.
Gas  supplied under the contract will be priced annually according to a 36-month
daily  average price of certain traded natural gas futures contracts, subject to
a  floor price provision that is similar to the price of the Moquawkie contract.
The  contract also provides for reimbursement to the producer of severance taxes
and  certain  transportation costs.  The contract received final approval by the
RCA  in  January  2002.
     Based  on  gas  purchases during the twelve months ended December 31, 2002,
which  are  not  necessarily  indicative  of the volume of future purchases, gas
reserves  committed  to  ENSTAR under the Marathon, Beluga, Moquawkie and Unocal
Contracts  are  sufficient  to  supply  all  of  ENSTAR's  expected  gas  supply
requirements  through  the  year  2005.  After  that time supplies will still be
available  under  these contracts in accordance with their terms, but at least a
portion  of ENSTAR's requirements are expected to be satisfied outside the terms
of  these  contracts,  as  currently  in  effect.
     ENSTAR's  gas  supply  source,  primarily  though  the  Marathon,  Beluga,
Moquawkie  and  Unocal  Contracts,  is  confined  to the Cook Inlet area with no
direct  access  to other natural gas pipelines.  However, the Cook Inlet area is
home  to  major  gas  producing  fields,  with  proven and producing reserves of
approximately  2.0  trillion  cubic  feet  ("Tcf").  An  additional  2.3  Tcf of
undiscovered  gas in the Cook Inlet area has been estimated by the United States
Geological  Survey  and  Minerals  Management  Service.

ENVIRONMENTAL  MATTERS  The  Gas  Distribution  Business  currently  owns  seven
Michigan  sites  which  formerly housed manufactured gas plants.  In the earlier
part  of  the 20th century, gas was manufactured from processes using coal, coke
or  oil.  By-products  of  this  process  have  left some contamination at these
sites.  The  Gas  Distribution  Business is in compliance with State of Michigan
rules  which require companies to take "due care" steps to insure that the sites
are  safe.  The  Gas  Distribution  Business  has closed a related site with the
approval  of  the  appropriate regulatory authority in the State of Michigan and
has  developed plans and conducted preliminary field investigations at two other
sites.  For  further  information,  refer  to  Note  13  of  the  Notes  to  the
Consolidated  Financial  Statements  on  pages  60  and 61 of the Company's 2002
Annual  Report  to  Shareholders,  which  information  is incorporated herein by
reference  from  Exhibit  13  to  this  Form  10-K.


                                      - 6 -

DIVERSIFIED  BUSINESSES

The  following  table  shows  operating  revenues  for  each  of the diversified
businesses,  including  intercompany  revenues,  for  2000  through  2002:





Years Ended December 31,            2002      2001      2000
- --------------------------------  --------  --------  --------
(in thousands)
                                             
Operating Revenues
Construction Services. . . . . .  $119,254  $126,205  $105,231
Information technology services.     9,618    10,275     5,184
Propane, Pipelines and Storage .     7,058     7,443     6,949

<FN>
The  amounts  in  the  above  table  include  intercompany  transactions.



     As  previously  discussed,  the  Company  has accounted for its engineering
services  segment  as  a  discontinued  operation.  Accordingly,  its  operating
results  are  segregated  and  reported  as  discontinued  operations  in  the
Consolidated  Statements  of  Operations.  Refer  to Note 11 of the Notes to the
Consolidated  Financial  Statements  on  pages  58  and 59 of the Company's 2002
Annual  Report  to  Shareholders,  which  information  is incorporated herein by
reference  from  Exhibit  13  to  this  Form  10-K,  for each of the diversified
business'  operating  revenues,  operating  income,  assets  and other financial
information  for  the  past  three  years.


CONSTRUCTION  SERVICES

The  Company's  construction services segment ("Construction Services") operates
in the mid-western, southern and southeastern areas of the United States and has
offices  in Georgia, Illinois, Iowa, Michigan and Texas.  Its primary service is
the  installation and upgrade of compressor stations and underground natural gas
mains  and  service  lines.
     Construction  Services  had  operating  revenues,  excluding  intercompany
transactions,  of $107.4 million, $117.2 million and $95.5 million in 2002, 2001
and 2000, respectively.  These operating revenues accounted for 22%, 26% and 23%
of  consolidated  operating  revenues  in  2002,  2001  and  2000, respectively.
Construction Services' business is seasonal in nature.  Most of the profits from
this  segment are made during the summer and fall months.  Construction Services
generally  incurs  losses during the winter months when underground construction
is  inhibited  by  weather.
     Construction  Services competes with small, medium and large-sized regional
underground  facilities  contractors  as  well  as in-house utility construction
operations.  The  natural  gas  construction services industry is comprised of a
highly  fragmented  group  of  companies  focused primarily on regional or local
markets.  For  more information on competition for Construction Services and the
company's  goals  and  expectations  for  this  business  under  its  redirected
strategy,  refer  to  the  section titled "Outlook for Construction Services" on
pages  23  and  24  of  the  Company's 2002 Annual Report to Shareholders, which
information  is  incorporated  herein  by reference from Exhibit 13 to this Form
10-K.


INFORMATION  TECHNOLOGY  SERVICES

The  information  technology  ("IT")  services  business,  under  the  Aretech
Information  Services  name  ("Aretech"),  began  operations  in  April 2000 and
provides  IT  infrastructure  outsourcing services, and other IT services with a
focus  on  mid-range computers, particularly the IBM I-Series (AS-400) platform.
The  Company's  other  business  segments  accounted  for  approximately  79% of
Aretech's  revenues  during  2002.  However,  the  Company  believes  there is a
growing  trend  by small to mid-sized companies to outsource certain information
technology  functions.  The  Company also believes the trend towards outsourcing
large  mainframe  computers  is  now moving to include mid-range computers.  The
Company's  goal  is  to  capitalize  on  its internal expertise in this area and
position  itself to take advantage of these trends.  Aretech's business strategy
is  focused  on  IT  infrastructure  outsourcing  services.

                                      - 7 -

     Aretech competes with businesses that range from small local firms to large
international  companies,  as  well  as the in-house IT departments of potential
customers.  Aretech  is  an early provider in the mid-range computer outsourcing
market  and, as the market expands, it is likely that new competition will arise
from  other  firms  that  possess  the  necessary  technical  skills.


PROPANE,  PIPELINES  AND  STORAGE

The  Company's  pipelines and storage business consists of three pipelines and a
gas  storage  facility, all of which are located in Michigan.  The Company has a
partial ownership interest in one of the pipelines and an equity interest in the
gas  storage  facility.  Refer  to  Item  2  of  this  Form  10-K for additional
information  on  each  pipeline  and  storage  facility such as its location and
customers.  The  Company  also  owns  a  propane distribution business (known as
"Hotflame").  Hotflame  supplies more than 4 million gallons of propane annually
to  retail  customers  in  Michigan's  upper  peninsula and northeast Wisconsin.
Because  propane  is  used principally for heating, most of the operating income
for  the  propane  business is generated in the first and fourth quarters of the
calendar  year.
     Propane  is  transported  easily in pressurized containers and is generally
the  fuel  used  in  rural  areas  where  natural gas pipelines and distribution
systems  do not exist or are not economical to build.  The Company purchases the
majority  of  its  propane  from  BP  Canada  Energy Marketing Corp. The propane
operation  competes  with  other  energy  sources such as natural gas, fuel oil,
electricity and other regional and national propane providers.  The basis of the
competition  is  generally  price  and  service.



ITEM  2.          PROPERTIES


GAS  DISTRIBUTION

The gas delivery system of the SEMCO Gas included approximately 160 miles of gas
transmission pipelines and 5,423 miles of gas distribution pipelines at December
31,  2002.  The pipelines are located throughout the southern half of Michigan's
lower peninsula (centered in and around the cities of Port Huron, Albion, Battle
Creek,  Three  Rivers,  Niles  and  Holland) and also in the central and western
areas  of  Michigan's  upper  peninsula.  At  December  31,  2002,  ENSTAR's gas
delivery  system  included approximately 396 miles of gas transmission pipelines
and  2,421  miles of gas distribution pipelines.  ENSTAR's pipelines are located
in  Anchorage  and  other  communities  around  the  Cook  Inlet area of Alaska.
     The  distribution system and service lines of the Gas Distribution Business
are, for the most part, located on or under public streets, alleys, highways and
other  public  places,  or  on  private  property  not owned by the Company with
permission  or  consent,  except to an inconsequential extent, of the individual
owners.  The  distribution  systems and service lines located on or under public
streets, alleys, highways and other public places were all installed under valid
rights  and  consents  granted  by  appropriate  local  authorities.
     The  Gas  Distribution  Business owns underground gas storage facilities in
eight  depleted  salt  caverns  and  three  depleted  gas  fields, together with
measuring,  compressor  and transmission facilities.  The storage facilities are
all  located  in Michigan.  The aggregate working capacity of the storage system
is  approximately  5  Bcf.
     The  Gas  Distribution  Business  also  owns  meters and service lines, gas
regulating  and  metering  stations,  garages,  warehouses  and  other buildings
necessary  and  useful  in  conducting  its  business.  In addition, it leases a
significant  portion  of  its  transportation  equipment.


CONSTRUCTION  SERVICES

The  tangible properties of Construction Services include equipment required for
the  installation,  repair or replacement of compressor stations and underground
natural  gas  mains  and  service  lines.  This  includes  primarily  equipment
necessary  for  excavation  such  as backhoes, trenchers, directional drills and
dump  trucks.  This  equipment  can  be  driven  or carried on trailers from one
worksite  to  another.  The  largest  concentrations  of  Construction Services'
equipment  at December 31, 2002 was located in Georgia, Illinois, Iowa, Michigan
and  Texas.


                                      - 8 -

INFORMATION  TECHNOLOGY  SERVICES

The  properties  of  this  business  segment  consist of leasehold improvements,
office  equipment,  telecommunications  equipment and computer equipment.  These
properties  are  located  in  a  building located in Marysville, Michigan and an
office  building  leased  in  St.  Clair,  Michigan.


PROPANE,  PIPELINES  AND  STORAGE

The  principal  properties  of  this  business  segment  include  interests  and
operations  in propane distribution, natural gas transmission and an underground
gas  storage  system.
     The  Company  owns  a  50%  equity interest in the Eaton Rapids Gas Storage
System  ("ERGSS").  The  Company's  equity  investment in the ERGSS totaled $4.7
million at December 31, 2002.  This system, located near Eaton Rapids, Michigan,
became  operational  in  March  1990  and  consists of approximately 12.8 Bcf of
underground  storage  capacity.  The Gas Distribution Business leases 6.5 Bcf of
the  capacity.
     The  property  of  the propane distribution operation consists primarily of
pressurized  propane  storage tanks used by customers to store propane purchased
from  the  Company  and  trucks for transporting propane.  The Company also owns
large  propane  storage  tanks  that  allow  the  Company to store up to 258,000
gallons  of propane inventory.  The propane distribution property is all located
in  Michigan's  upper  peninsula  and  northeast  Wisconsin.
     The  following table sets forth the pipeline operations wholly or partially
owned  by  the Company, the total net property of each system, and the Company's
ownership  percentage  and  net  property  in  each system at December 31, 2002:





                               Total          The Company's     The Company's
                            Net Property    Percent Ownership    Net Property
                           --------------  -------------------  --------------
                                        (in thousands of dollars)
                                                       
Litchfield Lateral. . . .  $       8,622                  33%   $       2,874
Greenwood Pipeline. . . .          5,677                 100%           5,677
Eaton Rapids Pipeline . .            580                 100%             580
                           --------------                       --------------
                           $      14,879                        $       9,131
                           ==============                       ==============



     The Litchfield Lateral is a 31-mile pipeline located in southwest Michigan.
The line, which is leased entirely to ANR Pipeline Company, links the ERGSS with
interstate  pipeline  supplies.  The Litchfield Lateral began operations in July
1992.
     The Greenwood Pipeline, an 18.5-mile pipeline constructed in 1991, connects
an  interstate  pipeline  with  the Detroit Edison Greenwood Power Plant located
near Port Huron, Michigan.  The pipeline provides transportation services to the
Greenwood  Power  Plant and to the Gas Distribution Business' service area north
of  Port  Huron.  In  1999,  the  pipeline  received  upgrades which allowed the
Company  to  serve  additional peak load generation units at the Greenwood site.
The Greenwood Pipeline has a capacity of 271 million cubic feet (MMcf") per day.
There  is  an  agreement  between the Company and Detroit Edison whereby Detroit
Edison  has contracted for 259 MMcf per day, of this capacity.  The Company also
has  an  agreement with its Gas Distribution Business for the remainder (12 MMcf
per  day)  of  the  pipeline  capacity.
     The  Eaton  Rapids  Pipeline  is  a  37-mile  pipeline that provides direct
delivery  of  gas  from  the  ERGSS to the Gas Distribution Business' systems in
Battle  Creek  and Albion, Michigan.  The original 30-mile line was purchased in
1986.  The  seven-mile  extension  to  the  ERGSS  was  completed  in  1990.


                                      - 9 -

CORPORATE  AND  OTHER

The  properties  of  the  Corporate  and  other  segment  include  leasehold
improvements,  office  furniture,  office  equipment,  computers  and  computer
systems.  These  properties  are  located  in leased office buildings located in
Port  Huron  and  Farmington  Hills,  Michigan.


ITEM  3.          LEGAL  PROCEEDINGS

Not  applicable.


ITEM  4.          SUBMISSION  OF  MATTERS  TO  A  VOTE  OF  SECURITY  HOLDERS

Not  applicable.



                                     PART II



ITEM  5.          MARKET  FOR  THE  REGISTRANT'S  COMMON  EQUITY  AND  RELATED
          STOCKHOLDER  MATTERS

MARKET  INFORMATION

SEMCO  Energy, Inc. Common Stock began trading on the New York Stock Exchange on
January  6,  2000 with the trading symbol "SEN".  Prior to this date the Company
was traded on the Nasdaq Stock Market with the trading symbol "SMGS."  The table
below shows the reported high and low sales prices of the Company's common stock
during  2002  and  2001,  as  reported  on  the  New  York  Stock  Exchange.




        2002 Price Range                      2001 Price Range
- -----------------------------------  ----------------------------------
2002            High          Low    2001            High      Low
- --------------  ------        -----  --------------  --------  --------
                                                
First Quarter   $11.40        $6.95  First Quarter   $15.4375  $13.1875
Second Quarter  $10.25        $6.60  Second Quarter  $  15.95  $  13.61
Third Quarter   $10.08        $7.06  Third Quarter   $  15.75  $  14.05
Fourth Quarter  $ 8.15        $5.60  Fourth Quarter  $  14.85  $   9.45



     See  the  cover  page of this Form 10-K for a recent common stock price and
the  number of common shares outstanding.  See Selected Financial Data in Item 6
of  this  Form 10-K for the number of registered common shareholders at year-end
for  the  past five years.  The Company had 9,095 registered common shareholders
at  February  28,  2003.

DIVIDENDS

For  information  regarding  dividends,  see  Notes 4 and 15 of the Notes to the
Consolidated Financial Statements on pages 49 through 51 and 63 of the Company's
2002  Annual Report to Shareholders, which information is incorporated herein by
reference from Exhibit 13 to this Form 10-K, and Selected Financial Data in Item
6  of  this  Form  10-K.

                                      - 10 -

UNREGISTERED  SECURITIES

During  the  fourth  quarter  of  2002, the Company issued an aggregate of 4,951
shares  of  unregistered  common  stock,  valued  at  $35,797, to members of the
Company's  Board  of  Directors  pursuant to three equity compensation plans for
Board  members,  which  are  described below.  The transactions were exempt from
registration  under  Section  4(2)  of  the Securities Act of 1933.  Information
about  unregistered  common stock is included in the Company's quarterly reports
on  Form  10-Q.

EQUITY  COMPENSATION  PLAN  INFORMATION

The following table provides information as of December 31, 2002 with respect to
the  shares of the Company's Common Stock that may be issued under the Company's
existing  equity  compensation  plans.




                                                                                  (C)
                                 (A)                                           NUMBER OF
                              NUMBER OF                                  SECURITIES REMAINING
                          SECURITIES TO BE              (B)              AVAILABLE FOR FUTURE
                             ISSUED UPON          WEIGHTED-AVERAGE      ISSUANCE UNDER EQUITY
                             EXERCISE OF         EXERCISE PRICE OF        COMPENSATION PLANS
                        OUTSTANDING OPTIONS,    OUTSTANDING OPTIONS,    (EXCLUDING SECURITIES
PLAN CATEGORY            WARRANTS AND RIGHTS    WARRANTS AND RIGHTS    REFLECTED IN COLUMN (A))
- ----------------------  ---------------------  ----------------------  ------------------------
                                                              
Equity compensation
  plans approved by
  security holders(1).             286,780     $             14.48                238,220
Equity compensation
  plans not approved
  by security holders.             852,438(2)  $             12.44(2)             902,460(3)(4)
                        ---------------------  ----------------------  ------------------------
Total. . . . . . . . .           1,139,218     $             12.96              1,140,680

<FN>
(1)     Includes  the  1997  Long-Term  Incentive  Plan.
(2)     Includes  options awarded pursuant to the Stock Option Plan of 2000 and options awarded
        pursuant  to  employment  agreements.
(3)     Includes 753,222 stock options available pursuant to the Stock Option Plan of 2000, 881
        common  shares  pursuant  to  the  Employee  Stock  Gift  Program, 96,359 common shares
        pursuant  to  the  Broad Based Stock Award Plan of SEMCO Energy, Inc. and Subsidiaries,
        13,493  common  shares  pursuant  to  the  Directors'  Deferred  Compensation and Stock
        Purchase  Plan  for  Non-Employee  Directors,  18,005  common  shares  pursuant  to the
        Compensation  in  Lieu  of  Medical  Plan Participation for Non-Employee Directors, and
        20,500  common  shares  pursuant  to  the  Stock Grant Plan for Non-Employee Directors.
(4)     No stock options pursuant to employment agreements are included as available for future
        grant  as  the number could not be determined as of December 31, 2002.  The formula for
        such grants is described below under "Stock Options Pursuant to Employment Agreements".



THE  1997  LONG-TERM  INCENTIVE PLAN.     The Company's Long-Term Incentive Plan
("LTIP")  was  approved by the shareholders at the Annual Meeting held April 15,
1997  and  provided for the issuance of options to purchase up to 500,000 shares
of  common  stock.  The  options  available  under  the  LTIP  were adjusted for
subsequent  stock  dividends.  The purposes of the LTIP are to provide long-term
incentives  to those persons with significant responsibility for the success and
growth  of the Company and its subsidiaries; to assist the Company in attracting
and  retaining  key  employees  and non-employee directors; and to associate the
interests  of  such  employees  and  directors  with  those  of  the  Company's
shareholders.
     As  of  December  31, 2002, there were 525,000 shares reserved for issuance
pursuant  to  the  LTIP.  As  noted  in  the table above, there were outstanding
options  to purchase 286,780 shares of common stock and 238,220 shares remaining
available  for  grant  as  of  December  31,  2002.

                                      - 11 -

     Awards  may  be  in  the  form  of  stock options, incentive stock options,
restricted  stock, performance units, stock appreciation rights, and other stock
incentives.  All awards granted thus far have been in the form of stock options,
which  vest over a three-year period.  Options granted pursuant to the LTIP must
be  granted  at fair market or greater value on the date of grant and expire ten
years  from  the  date  of grant.  Repricing and replacement of underwater stock
options  shall  not  be  permitted.  The  Compensation Committee of the Board of
Directors  has  the power to determine when options granted under the LTIP shall
become  exercisable.  Each  outstanding  stock option or other stock-based award
shall  become  immediately  and fully exercisable for a period of six (6) months
following the date of a "Change of Control" as that term is defined by the LTIP.
     An  employee  may  be  granted  multiple  awards under the LTIP, but no one
employee  may  be  granted  awards  which  would  result in him or her receiving
options  or  other  awards for more than 30,000 shares under the LTIP in any one
calendar  year.  Under  the  LTIP, each non-employee director shall each year be
awarded  an  option  to  purchase  1,000  shares.

THE  STOCK  OPTION  PLAN  OF  2000.  On  August 17, 2000, the Company's Board of
Directors  ("Board")  approved  The  Stock Option Plan of 2000 ("SOP").  The SOP
allows  stock  options to be granted in excess of the LTIP maximum number to the
extent  deemed  appropriate by the Board's Compensation Committee.  However, SOP
stock  options  granted  to  a  single  person cannot exceed 1% of the Company's
outstanding  stock  at  the  time of grant.  In addition, no more than 5% of the
Company's  outstanding  stock  may  be  issued  pursuant to exercises of options
granted  under  any  non-shareholder approved plan.  To the extent not otherwise
specified  in a Board resolution, SOP stock options will be issued upon the same
terms  and  conditions  as  LTIP  stock  options.
     As  of  December  31, 2002, there were 901,806 shares reserved for issuance
pursuant  to the SOP.  There were outstanding options to purchase 148,584 shares
of  common stock and 753,222 shares remaining available for grant as of December
31,  2002.

EMPLOYEE  STOCK GIFT PROGRAM.  On December 16, 1999, the Company's Board created
a  reserve  for  the  Employee  Stock  Gift  Program,  which  was established to
encourage  employee  stock  ownership.  The  first  time  an employee enrolls in
payroll  deduction  to  make  optional  payments  to  the Company's Direct Stock
Purchase  and  Dividend  Reinvestment  Plan  (the "DRIP"), one share of stock is
added  to  their  account  at  no  charge.
     As  of  December  31,  2002,  there were 881 common shares reserved for the
program.

BROAD BASED STOCK AWARD PLAN OF SEMCO ENERGY, INC. AND SUBSIDIARIES.  On October
14,  1999,  the Company's Board of Directors created a reserve for a Broad Based
Stock Award Plan (the "BBSA Plan") for the Company and its subsidiaries in order
to  develop  a  program  to:  provide an incentive similar to competitive market
practice;  create  a mid-term incentive for retention purposes; and increase the
link  between  individual  and corporate success.  The BBSA Plan was designed to
grant full value shares of the Company's stock to employees at all levels in the
organization, with participants being given one-time or ongoing restricted stock
awards  subject  to  service-based vesting requirements.  The stock restrictions
are  subject to three-year cliff vesting requiring continued employment with the
Company  and  forfeiture  of  the  stock  for  either  voluntary  or involuntary
termination  of  employment.
     As  of  December 31, 2002, there were 96,359 common shares reserved for the
BBSA  Plan.

DIRECTORS'  DEFERRED  COMPENSATION  AND  STOCK  PURCHASE  PLAN  FOR NON-EMPLOYEE
DIRECTORS.  Prior  to  1999,  the  Company  offered Directors the opportunity to
defer  income  earned as a Board member into an interest bearing account or into
phantom  stock.  Beginning  in  1999, the phantom stock alternative was replaced
with  Company  common stock and any phantom stock allocated to the participants'
accounts was converted to Company stock.  Directors can defer income earned as a
Board  member  by  electing  to have the Company contribute it to the Directors'
Deferred  Compensation  and  Stock Purchase Plan for Non-Employee Directors (the
"Directors'  Deferred  Comp.  Plan").  Participants  in  the Directors' Deferred
Comp.  Plan must make a distribution election prior to the beginning of the year
when the income is to be deferred.  Distribution alternatives are either 1) in a
lump  sum  within 30 days of:  a) the date the Director ceases to be a full-time
member  of  the  Board,  b)  January  1  of  a  chosen  year,  c) the earlier of
alternative  1a  or  1b, or d) the later of alternative 1a or 1b; or 2) in three
annual  graduated installments beginning within 30 days of the date the Director
ceases  to  be  a  full-time member of the Board; or 3) in five annual graduated
installments  beginning  within 30 days of the date the Directors ceases to be a
full-time member of the Board.  If Company common stock is the chosen investment
vehicle,  distributions  are  made  in  common  stock.

                                      - 12 -

     As  of  December 31, 2002, there were 13,493 common shares reserved for the
Directors'  Deferred  Comp.  Plan.

COMPENSATION  IN  LIEU OF MEDICAL PLAN PARTICIPATION FOR NON-EMPLOYEE DIRECTORS.
In December 1995, the Board determined that it would be in the best interests of
the  Company  to  phase  out  the participation of non-employee Directors in the
Company's  Medical, Dental and Prescription Drug Plan ("the Medical Plan").  Any
Directors  joining  the  Board  after  1995 are ineligible to participate in the
Medical  Plan and any Directors who withdraw from Medical Plan participation are
not eligible for future participation.  A plan was established to provide a form
of  stock-based compensation to each non-employee member of the Board who is not
eligible  to  participate  in the Medical Plan.  Pursuant to the Compensation in
Lieu  of Medical Plan Participation for Non-Employee Directors (the "Non-Medical
Plan"),  stock-based  compensation in one of the following forms is paid to each
participant  based  on  the  annual election of the participant:  a) issuance of
common stock to the participant; b) allocation of common stock to the Directors'
Deferred  Comp.  Plan; or c) payment of cash to the participant's account in the
DRIP.  No  payment  is  made  to any person who is not a Director at the time of
payment,  regardless  of  the  reason.
     As  of  December 31, 2002, there were 18,005 common shares reserved for the
Non-Medical  Plan.

STOCK  GRANT  FOR  PLAN  FOR  NON-EMPLOYEE DIRECTORS.  In August 2001, the Board
approved  the  Stock  Grant  Plan  for  Non-Employee Directors (the "Stock Grant
Plan")  in  order  to  strengthen  the  alignment  between the interests of each
non-employee  member  of  the  Board  and  the  interests  of  the  Company's
shareholders.  Pursuant  to  the Stock Grant Plan, each non-employee Director is
awarded  500  common  shares  annually.
     As  of  December 31, 2002, there were 20,500 common shares reserved for the
Stock  Grant  Plan.

STOCK  OPTIONS  PURSUANT TO EMPLOYMENT AGREEMENTS.  The Company has entered into
employment  agreements  from time to time that included provisions for the grant
of  stock  options.
     Pursuant  to the terms of Mr. William Johnson's (former CEO of the Company)
employment  agreement,  he  was  granted, as of May 1, 1996 and January 3, 1997,
stock  options  for  the  purchase  of a total of 45,000 shares of common stock,
which  were  subsequently adjusted for stock dividends to 49,612.  Mr. Johnson's
stock  options  were  amended in 2001 to extend the exercisable period following
Mr.  Johnson's  retirement  to  three  years  from  one  year  in  the  original
agreements.
     In  conjunction  with  the  acquisition of Long's Underground Technologies,
Inc. ("Long's"), key employees of Long's were given employment agreements, which
included  provisions  for  the  grant  of stock options based upon the return on
assets  ("ROA") of Long's.  The employment agreements were entered into with Mr.
Paul Long and six other key employees.  Mr. Long's agreement provided for annual
grants  of  stock  options  for three years with the minimum annual option grant
being  for 3,500 shares pro-rated for partial periods.  Mr. Long's option grants
would  increase  above  the  minimum  by  500 shares for an increase of 25 basis
points  above  a  9.75%  ROA  and  by 1,000 shares for each increase of 25 basis
points  above  a  10% ROA.  A pool of 6,000 shares per year in the aggregate was
established  for  awards  pursuant  to  the  agreements  with  the six other key
employees  of Long's.  The agreements with the six employees provided for annual
grants of stock options for two years with the minimum annual option grant being
for  385  shares pro-rated for partial periods.  The options granted pursuant to
these  contracts  had graduated three-year vesting periods, were granted at fair
market  value  at the time of grant and expire ten years from the date of grant.
All  of  the  employment  contracts  with  the Long's employees expired prior to
December  31,  2002.
     In  conjunction  with  the  acquisition  of  Flint  Construction  Company
("Flint"),  key  employees  of  Flint  were  given  employment agreements, which
included  provisions  for  the  grant  of stock options based upon the return on
assets  of  Flint.  The  employment agreements were entered into with Mr. Robert
Good, Mr. J. Terry Fuller and Mr. James Eaves.  The agreements for Messrs. Good,
Fuller  and  Eaves  provided  for annual grants of stock options for three years
based  on  an  ROA  of  9.5%  or greater, with such awards pro-rated for partial
periods.  The  agreements  for  Messrs.  Good  and Fuller provided for awards of
options  for  1,000 shares for a 9.5% ROA and increases of 1,000 shares for each
25  basis  points above the 9.5% ROA.  The agreement with Mr. Eaves provided for
awards  of  options  for  500 shares at 9.5% ROA and increases of 500 shares for
each  25  basis  points  above  9.5% ROA.  The options granted pursuant to these

                                      - 13 -

contracts  had graduated three-year vesting periods, were granted at fair market
value  at  the  time  of  grant  and  expire  ten  years from the date of grant.
Although the Flint contracts expired prior to December 31, 2002, the calculation
for  the  final  grant  of options pursuant to the employment agreements was not
completed  before  year  end so the number of the final grant of options made in
2003  is  not  reflected  in  the table as the maximum number of options was not
determined  as  of  December  31,  2002.
     Pursuant  to  the  terms  of  Mr.  Marcus  Jackson's  (CEO  of the Company)
employment  agreement, he was granted, as of June 1, 2001, stock options for the
purchase  of  200,000 shares of common stock at fair market value on the date of
grant, with a graduated three-year vesting period, and expiration ten years from
the  date  of  grant.


ITEM  6.          SELECTED  FINANCIAL  DATA

For  the information required pursuant to this item, refer to the section titled
"Selected  Financial  Data" in the Company's 2002 Annual Report to Shareholders,
pages  64  and  65,  which  information is incorporated herein by reference from
Exhibit  13  to  this  Form  10-K.


ITEM 7.          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS  OF  OPERATIONS

For  the information required pursuant to this item, refer to the section titled
"Management's  Discussion  and  Analysis  of  Financial Condition and Results of
Operations"  in  the  Company's  2002  Annual  Report  to Shareholders, pages 16
through  33,  which information is incorporated herein by reference from Exhibit
13  to  this  Form  10-K.

The  Company is currently under review by a bond rating agency with a conclusion
of  that  review  expected  soon.  The  Future Financing section of Management's
Discussion and Analysis on page 29 and 30 of the Company's 2002 Annual Report to
Shareholders  includes  discussions regarding the Company's ability to remain in
compliance  with the restrictive financial covenants contained in certain of its
debt  agreements.  Those  discussions  assume  that the Company would be able to
refinance  its  long-term  debt  in  accordance  with its financing plans.   The
Company  cannot  predict  the  outcome  of  the  rating agency review.  However,
depending  on  the  outcome  of this review, the Company's refinancing plans for
2003  may  have  to be altered, which may result in the Company not remaining in
compliance  with  one or more of the covenants.  In the event the Company is not
able to remain in compliance with these covenants, management plans to negotiate
a  modification  of  the  covenants  or a waiver of certain covenant provisions.
However,  the  Company cannot make any assurances about whether modifications or
waivers  can  be  negotiated.


ITEM  7A.     QUANTITATIVE  AND  QUALITATIVE  DISCLOSURES  ABOUT  MARKET  RISK

For  the information required pursuant to this item, refer to the section titled
"Market  Risk  Information"  on  page  30 of the Company's 2002 Annual Report to
Shareholders, which information is incorporated herein by reference from Exhibit
13  to  this  Form  10-K.


ITEM  8.          FINANCIAL  STATEMENTS  AND  SUPPLEMENTARY  DATA

For  the  information  required  pursuant  to  this item, refer to the following
sections  of the Company's 2002 Annual Report to Shareholders, which information
is  incorporated  herein  by  reference  from  Exhibit  13  to  this  Form 10-K:

      Reports  of  Independent  Public  Accountants,  page  34  and  35
      Consolidated  Statements  of  Operations,  page  36
      Consolidated  Statements  of  Financial  Position,  page  37
      Consolidated  Statements  of  Cash  Flow,  page  38
      Consolidated  Statements  of  Capitalization,  page  39
      Consolidated Statements of Changes in Common Shareholders' Equity, page 40
      Notes  to the Consolidated Financial Statements, pages 41 through 63


                                      - 14 -

ITEM  9.          CHANGES  IN  AND  DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
                  AND  FINANCIAL  DISCLOSURE

In  May 2002, the Company's Board of Directors voted to discontinue using Arthur
Andersen  LLP  ("Andersen")  to audit the Company's financial statements for the
year  ending  December  31,  2002.  The  Company previously retained Andersen to
review  their financial statements for the quarter ended March 31, 2002.  In May
2002  the  Company  engaged  PricewaterhouseCoopers  LLP  to audit its financial
statements  for  the  year ending December 31, 2002.  During 1999, 2000 and 2001
there  were  no  disagreements  or  "reportable  events"  as  described in Items
304(a)(I)(iv)  and  (v)  of  Regulation  S-K  between  the Company and Andersen.



                                    PART III


ITEM  10.     DIRECTORS  AND  EXECUTIVE  OFFICERS  OF  THE  REGISTRANT

The  information  appearing  under  the  captions  "Information  About Nominees,
Directors  and  Executive  Officers" in the Company's definitive Proxy Statement
(filed  pursuant to Regulation 14A) with respect to the Company's April 15, 2003
Annual  Meeting  of  Common  Shareholders  is  incorporated by reference herein.


ITEM  11.     EXECUTIVE  COMPENSATION

The  information appearing under the caption "Compensation of Executive Officers
and  Directors"  in  the Company's definitive Proxy Statement (filed pursuant to
Regulation  14A)  with  respect  to  Company's  April 15, 2003 Annual Meeting of
Common  Shareholders  is  incorporated  by  reference  herein.  There  are  no
compensation  committee  interlocks  or  insider  participation.


ITEM  12.     SECURITY  OWNERSHIP  OF  CERTAIN  BENEFICIAL OWNERS AND MANAGEMENT

The  information  appearing  under  the  caption  "Stock  Outstanding and Voting
Rights"  in  the  Company's  definitive  Proxy  Statement  (filed  pursuant  to
Regulation  14A)  with respect to the Company's April 15, 2003 Annual Meeting of
Common  Shareholders  is  incorporated  by  reference  herein.

ITEM  13.     CERTAIN  RELATIONSHIPS  AND  RELATED  TRANSACTIONS

The  information appearing under the caption "Employment and Related Agreements"
in  the  Company's definitive Proxy Statement (filed pursuant to Regulation 14A)
with  respect  to  the  Company's  April  15,  2003  Annual  Meeting  of  Common
Shareholders  is  incorporated  by  reference  herein.

ITEM  14.     CONTROLS  AND  PROCEDURES

DISCLOSURE CONTROLS AND PROCEDURES  Within the 90 days prior to the date of this
report,  the  Company  carried out an evaluation, under the supervision and with
the  participation  of management, including the Chief Executive Officer and the
Chief Financial Officer, of the effectiveness of the design and operation of the
Company's  disclosure  controls  and  procedures.  Based  on  the  review of the
disclosure  controls  and  procedures, the Chief Executive Officer and the Chief
Financial  Officer  have  concluded  that  the Company's disclosure controls and
procedures  are  effective  in  timely alerting them to the material information
relating  to  the  Company  that  is required to be included in the periodic SEC
filings.

                                      - 15 -

INTERNAL  CONTROLS AND PROCEDURES  There were no significant changes in internal
controls  or  in  other  factors  that could significantly affect these controls
subsequent  to  the  date  of the Company's evaluation, including any corrective
actions  with  regard  to  significant  deficiencies  and  material  weaknesses.



                                     PART IV



ITEM  15.     EXHIBITS,  FINANCIAL  STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a)  1          All  Financial  Statements.  For  a list of financial statements
incorporated  by  reference,  see  the  Part  II,  Item  8  of  this  10-K.

(a)  2     Financial  Statement  Schedules.  The  following  additional data and
schedule  should  be  read  in  conjunction  with  the  Consolidated  Financial
Statements  in Part II, item 8 of this 10-K.  Schedules not included herein have
been  omitted  because  they  are  not applicable or the required information is
shown  in  such  financial  statements  or  notes  thereto.






                                                         Pages in 10-K
                                                         -------------
                                                      
    Report of Independent Public Accountants on
    Financial Statement Schedules . . . . . . . . . . .             17

    Schedule II - Consolidated Valuation and Qualifying
    Accounts for the years ended December 31, 2002,
    2001 and 2000 . . . . . . . . . . . . . . . . . . .             19


(a)  3     Exhibits,  including  those  incorporated  by reference are listed on
pages  20  and  21  of  this  10-K.

(b)     Reports  on  Form  8-K.

     No  reports  on  Form  8-K  were  filed  during the fourth quarter of 2002.

(c)     The  Exhibits,  if  any,  filed  herewith are identified in Item 15(a) 3
above.

(d)     The  financial statement schedules filed are identified under Item 15(a)
2  above.


                                      - 16 -

                   REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS ON
                          FINANCIAL STATEMENT SCHEDULES




To  Semco  Energy,  Inc.:

Our  audit  of  the  consolidated financial statements referred to in our report
dated  February  10, 2003 appearing in the 2002 Annual Report to Shareholders of
SEMCO  Energy,  Inc.  (which  report  and  consolidated financial statements are
incorporated  by  reference in this Annual Report on Form 10-K) also included an
audit  of  the financial statement schedule for the year ended December 31, 2002
listed  in  Item  15(a)(2)  of  this  Form  10-K.  In our opinion, the financial
statement  schedule for the year ended December 31, 2002 presents fairly, in all
material  respects,  the  information set forth therein when read in conjunction
with  the  related  consolidated  financial statements.  The financial statement
schedules  of SEMCO Energy, Inc. for the years ended December 30, 2001 and 2000,
were audited by other independent accountants who have ceased operations.  Those
independent  accountants  expressed  an  unqualified  opinion on those financial
statement  schedules  in  their  report  dated  February  7,  2002.


PricewaterhouseCoopers  LLP

Detroit,  Michigan
February  10,  2003

                                      - 17 -

REPORT  OF  INDEPENDENT  PUBLIC  ACCOUNTANTS


The  following report is a copy of a report previously issued by Arthur Andersen
LLP  and  has  not been reissued by Arthur Andersen LLP.  This report applies to
supplemental  Schedule II, Valuation and Qualifying Accounts for the years ended
December  31, 2001 and 2000.  This schedule was listed in prior years in Item 14
(a)  2  of  the  Form  10-K.



To  SEMCO  Energy,  Inc.:

We have audited, in accordance with auditing standards generally accepted in the
United  States,  the  consolidated  financial  statements  of SEMCO Energy, Inc.
included in this Form 10-K, and have issued our report thereon dated February 7,
2002.  Our  audit  was  made  for the purpose of forming an opinion on the basic
financial  statements taken as a whole.  The schedule listed in item 14 (a) 2 is
presented  for  purposes  of  complying  with  the  Securities  and  Exchange
Commission's  rules  and  is  not  part  of the basic financial statements.  The
schedule  has  been subjected to the auditing procedures applied in the audit of
the  basic  financial  statements  and,  in  our  opinion,  fairly states in all
material  respects  the  financial  data  required  to  be  set forth therein in
relation  to  the  basic  financial  statements  taken  as  a  whole.


Arthur  Andersen  LLP

Detroit,  Michigan,
February  7,  2002


                                      - 18 -

SCHEDULE  II




                                        SEMCO ENERGY, INC.

                   SCHEDULE II - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS
                                      (THOUSANDS OF DOLLARS)



                                                         ADDITIONS FOR     DEDUCTIONS
                                                           PROVISIONS     FROM RESERVE
                                               BALANCE     CHARGED OR    FOR PURPOSE FOR    BALANCE
                                              BEGINNING    (CREDITED)   WHICH THE RESERVE     END
     DESCRIPTION                              OF PERIOD    TO INCOME      WAS PROVIDED     OF PERIOD
- --------------------------------------------  ---------  -------------  -----------------  ---------
                                                                                
YEAR ENDED DECEMBER 31, 2002
- ----------------------------

Allowances  for  doubtful  accounts
  deducted  from  receivables  in  the
  Statement of Financial Position . . . . . .  $1,849       $ 1,152          $1,092         $1,909
                                               ======       ========         ======         ======

Reserves  for  restructuring  costs
  included  in  current  liabilities  and
  deferred  credits  in  the  Statement
  of  Financial  Position . . . . . . . . . .  $2,338       $     0          $1,245         $1,093
                                               ======       ========         ======         ======

Allowances  and  reserves  for  discontinued
  operations included in current liabilities
  in  the  Statement of Financial Position. .  $7,409       $(1,287)         $6,122         $    0
                                               ======       ========         ======         ======





YEAR ENDED DECEMBER 31, 2001
- ----------------------------

Allowances  for  doubtful  accounts
  deducted  from  receivables  in  the
  Statement  of  Financial  Position. . . . .  $1,436       $ 1,410          $  997         $1,849
                                               ======       ========         ======         ======

Reserves  for  restructuring  costs
  included  in  current  liabilities  and
  deferred  credits  in  the  Statement
  of Financial Position . . . . . . . . . . .  $    0       $ 2,338          $    0         $2,338
                                               ======       ========         ======         ======

Allowances  and  reserves  for  discontinued
  operations included in current liabilities
  in  the  Statement  of Financial Position .  $    0       $ 7,409          $    0         $7,409
                                               ======       ========         ======         ======





YEAR ENDED DECEMBER 31, 2000
- ----------------------------

Allowances  for  doubtful  accounts
  deducted  from  receivables  in  the
  Statement  of  Financial  Position. . . . .  $1,080       $ 1,186          $  830         $1,436
                                               ======       ========         ======         ======



                                      - 19 -

EXHIBITS,  INCLUDING  THOSE  INCORPORATED  BY  REFERENCE




                                                                           Filed
                                                                     -------------------
Exhibit                                                                           By
  No.                        Description                             Herewith  Reference
- -------  ----------------------------------------------------------  --------  ---------

                                                                         
 3.(i)   Articles of Incorporation of SEMCO Energy, Inc., as
         restated June 25, 1999.(f) . . . . . . . . . . . . . . . .               x
 3.(ii)  Bylaws--last  revised  June  20,  2002.(m) . . . . . . . .               x
 4.1     Note  Agreement  dated  as  of  June  1, 1994, relating
         to  issuance  of  $80,000,000  of  long-term  debt.(a) . .               x
 4.2     Rights  Agreement  dated  as  of  April  15,  1997 with
         Continental  Stock  Transfer  &  Trust  Company,  as
         Rights  Agent.(c). . . . . . . . . . . . . . . . . . . . .               x
 4.3     Note  Agreement  dated  as  of October 1, 1997, relating
         to  issuance  of  $60,000,000  of  long-term  debt.(d) . .               x
 4.4     Form  of Indenture relating to Senior Debt Securities
         dated  as  of  _________1,  1998,  with  Bank  One
         Trust  Company  (formerly  NBD  Bank)  as  Trustee.(e) . .               x
 4.5     First  Supplemental  Indenture  relating to Senior Debt
         Securities  dated  as  of  June 16, 2000, with Bank One
         Trust  Company  as  Trustee.(g). . . . . . . . . . . . . .               x
 4.6     Second  Supplemental  Indenture  relating to Senior Debt
         Securities  dated  as  of  June  29, 2000, with Bank One
         Trust  Company  as  Trustee.(g). . . . . . . . . . . . . .               x
 4.7     Indenture relating to Subordinated Debentures dated as of
         April 19, 2000, with Bank One Trust Company, Trustee.(h) .               x
 4.8     First  Supplemental  Indenture relating to Subordinated
         Debentures  dated  as  of April 19, 2000, with Bank One
         Trust  Company,  as  Trustee.(h) . . . . . . . . . . . . .               x
 4.9     Credit  Agreement  dated  as  of  June 25, 2002, among
         SEMCO  Energy,  Inc.  as  Borrower,  various  financial
         institutions,  Standard  Federal Bank N.A. as Agent and
         Arranger,  Keybank  National Association as Syndication
         Agent  and  U.S.  Bank,  N.A. and National City Bank of
         Michigan/Illinois  as  Documentation  Agents.(m) . . . . .               x
10       Material  Contracts.
10.1     Short-Term  Incentive Plan as amended June 10, 1999.(f). .               x
10.2     1997  Long-Term  Incentive  Plan.(b) . . . . . . . . . . .               x
10.3     Amendment  (dated  August  10,  2001)  to  Employment
         Agreement  with  William  L.  Johnson.(k). . . . . . . . .               x
10.4     Executive  Security  Agreement.(i) . . . . . . . . . . . .               x
10.5     Split-Dollar  Agreement.(i). . . . . . . . . . . . . . . .               x
10.6     Form  of  Change  in  Control Agreement (for certain
         officers).(h). . . . . . . . . . . . . . . . . . . . . . .               x
10.7     Form  of  Change of Control Employment Agreement dated
         as  of  March  1,  2000  (for  certain  officers).(h). . .               x
10.8     Executive  Security  Trust.(i) . . . . . . . . . . . . . .               x
10.9     Stock  Option  Plan  of  2000.(j). . . . . . . . . . . . .               x
10.10    Deferred  Compensation  and  Stock  Purchase  Plan  for
         Non-Employee  Directors  revised  December 13, 2001.(l). .               x
10.11    Stock  Grant  Plan  for  Non-Employee  Directors
         adopted  August  23,  2001.(l) . . . . . . . . . . . . . .               x
10.12    Employment  Agreement  dated  as  of  June  1,  2001
         with  Marcus  Jackson.(l). . . . . . . . . . . . . . . . .               x
12       Ratio of Earnings to Fixed Charges.. . . . . . . . . . . .    x
13       SEMCO  Energy, Inc. 2002 Annual Report to Shareholders,
         pages  16-65.. . . . . . . . . . . . . . . . . . . . . . .    x
21       Subsidiaries  of  the  Registrant. . . . . . . . . . . . .    x
23       Consent  of  Independent  Public  Accountants. . . . . . .    x
24       Power  of  Attorney. . . . . . . . . . . . . . . . . . . .    x
99.1     CEO  Certification  Pursuant to 18 U.S.C. Section 1350,
         as  Adopted  Pursuant  to  Section  906  of  the
         Sarbanes-Oxley Act of 2002.  . . . . . . . . . . . . . . .    x
99.2     CFO  Certification  Pursuant to 18 U.S.C. Section 1350,
         as  Adopted  Pursuant  to  Section  906  of  the
         Sarbanes-Oxley Act of 2002.  . . . . . . . . . . . . . . .    x
99.3     Proxy  Statement  dated  March  10,  2003.(n). . . . . . .               x


<FN>
Key  to  Exhibits  Incorporated  by  Reference
(a)     Filed with SEMCO Energy, Inc.'s Form 10-Q for the quarter ended June 30,
        1994,  File  No.  0-8503.
(b)     Filed  March  6,  1997  as  part  of  SEMCO  Energy,  Inc.'s  1997 Proxy
        Statement,  dated  March  7,  1997,  File  No.     0-8503.
(c)     Filed  with  SEMCO  Energy,  Inc.'s  Form 10-K for 1996, dated March 27,
        1997,  File  No.  0-8503.
(d)     Filed  with  SEMCO  Energy,  Inc.'s  Form  10-Q  for  the  quarter ended
        September  30,  1997,  File  No.  0-8503.
(e)     Filed  with  SEMCO Energy, Inc.'s Registration Statement, Form S-3, Nos.
        333-58715  and  333-58715-01,  filed  July  8,  1998.
(f)     Filed with SEMCO Energy, Inc.'s Form 10-Q for the quarter ended June 30,
        1999,  File  No.  0-8503.
(g)     Filed  with  SEMCO Energy, Inc.'s Form 8-K dated July 26, 2000, File No.
        001-15565.
(h)     Filed  with  SEMCO  Energy, Inc.'s Form 10-Q for the quarter ended March
        31,  2000,  File  No.  001-15565.
(i)     Filed  with  SEMCO  Energy,  Inc.'s  Form  10-Q  for  the  quarter ended
        September  30,  2000.
(j)     Filed  with  SEMCO  Energy,  Inc.'s  Form 10-K for 2000, dated March 30,
        2001,  File  No.  001-15565.
(k)     Filed  with  SEMCO  Energy,  Inc.'s  Form  10-Q  for  the  quarter ended
        September  30,  2001,  File  No.  001-15565.
(l)     Filed  with  SEMCO  Energy,  Inc.'s  Form 10-K for 2001, dated March 27,
        2002,  File  No.  001-15565.
(m)     Filed with SEMCO Energy, Inc.'s Form 10-Q for the quarter ended June 30,
        2002,  File  No.  001-15565.
(n)     Filed  March  10, 2003, pursuant to Rule 14a-6 of the Exchange Act, File
        No.  001-15565.


                                  - 20 & 21 -


                                   SIGNATURES

          Pursuant  to the requirements of Section 13 of the Securities Exchange
Act  of  1934,  the  Registrant  has duly caused this report to be signed on its
behalf  by  the  undersigned,  thereunto  duly  authorized.

                             SEMCO  ENERGY,  INC.


Date:  March  14,  2003      By  /s/Marcus Jackson
                                 -----------------------------------------------
                                 Marcus Jackson
                                 Chairman, President and Chief Executive Officer


          Pursuant  to  the requirements of the Securities Exchange Act of 1934,
this  report  has  been  signed  below by the following persons on behalf of the
Registrant  and  in  the  capacities  and  on  the  dates  indicated.





  Signature                                        Title                             Date
- -----------------------------  ------------------------------------------------  --------------
                                                                           

/s/Marcus Jackson              Chairman, President and Chief Executive Officer   March 14, 2003
- -----------------------------
  Marcus Jackson                    (Director)


/s/John E. Schneider           Senior Vice President, Treasurer and              March 14, 2003
- -----------------------------
  John E. Schneider                 Chief Financial Officer (Principal
                                    Financial and Accounting Officer)


/s/John M. Albertine*          Director                                          March 14, 2003
- -----------------------------
  John M. Albertine


/s/Edward J. Curtis*           Director                                          March 14, 2003
- -----------------------------
  Edward J. Curtis


/s/John T. Ferris*             Director                                          March 14, 2003
- -----------------------------
  John T. Ferris


/s/Michael O. Frazer*          Director                                          March 14, 2003
- -----------------------------
  Michael O. Frazer


/s/John  R.  Hinton*           Director                                          March 14, 2003
- -----------------------------
  John R. Hinton


/s/Harvey I. Klein*            Director                                          March 14, 2003
- -----------------------------
  Harvey I. Klein


/s/Frederick S. Moore*         Director                                          March 14, 2003
- -----------------------------
  Frederick S. Moore


/s/Thomas  W.  Sherman*        Director                                          March 14, 2003
- -----------------------
  Thomas  W.  Sherman


/s/Edith A. Stotler*           Director                                          March 14, 2003
- -----------------------------
  Edith A. Stotler


/s/Donald W. Thomason*         Director                                          March 14, 2003
- -----------------------------
  Donald W. Thomason


*By /s/Marcus Jackson                                                            March 14, 2003
- -----------------------------
  Marcus Jackson
  Attorney-in-fact

                                      - 22 -

                                 CERTIFICATIONS


I,  Marcus  Jackson,  certify  that:

1.     I  have  reviewed  this  annual report on Form 10-K of SEMCO Energy, Inc.
(the  "registrant");

2.     Based  on  my  knowledge,  this annual report does not contain any untrue
statement  of a material fact or omit to state a material fact necessary to make
the  statements  made, in light of the circumstances under which such statements
were  made,  not  misleading  with  respect to the period covered by this annual
report;

3.     Based  on  my  knowledge,  the  financial statements, and other financial
information  included  in  this  annual  report,  fairly present in all material
respects  the  financial  condition, results of operations and cash flows of the
registrant  as  of,  and  for,  the  periods  presented  in  this annual report;

4.     The  registrant's  other  certifying  officer  and  I are responsible for
establishing  and  maintaining disclosure controls and procedures (as defined in
Exchange  Act  Rules  13a-14  and  15d-14)  for  the  registrant  and  we  have:

     a)     designed  such  disclosure  controls  and  procedures to ensure that
material  information  relating  to  the  registrant, including its consolidated
subsidiaries,  is made known to us by others within those entities, particularly
during  the  period  in  which  this  annual  report  is  being  prepared;

     b)     evaluated  the effectiveness of the registrant's disclosure controls
and  procedures  as  of  a  date within 90 days prior to the filing date of this
annual  report  (the  "Evaluation  Date");  and

     c)     presented  in  this  annual  report  our  conclusions  about  the
effectiveness  of the disclosure controls and procedures based on our evaluation
as  of  the  Evaluation  Date.

5.     The  registrant's other certifying officer and I have disclosed, based on
our most recent evaluation, to the registrant's auditors and the audit committee
of  the  registrant's  board  of directors (or persons performing the equivalent
function):

     a)     all  significant deficiencies in the design or operation of internal
controls  which  could  adversely  affect  the  registrant's  ability to record,
process,  summarize  and  report  financial  data  and  have  identified for the
registrant's  auditors  any  material  weaknesses  in  internal  controls;  and

     b)     any  fraud,  whether  or  not  material, that involves management or
other  employees  who  have  a  significant  role  in  the registrant's internal
controls;  and

6.     The  registrant's  other  certifying officer and I have indicated in this
annual report whether or not there were significant changes in internal controls
or in other factors that could significantly affect internal controls subsequent
to the date of our most recent evaluation, including any corrective actions with
regard  to  significant  deficiencies  and  material  weaknesses.


Date:     March  14,  2003
                                  /s/Marcus  Jackson
                                  ----------------------------------------------
                                  Chairman  of  the  Board,  President  and
                                  Chief  Executive  Officer
                                  SEMCO  Energy,  Inc.

                                      - 23 -

                           CERTIFICATIONS (CONTINUED)


I,  John  E.  Schneider,  certify  that:

1.     I  have  reviewed  this  annual report on Form 10-K of SEMCO Energy, Inc.
(the  "registrant");

2.     Based  on  my  knowledge,  this annual report does not contain any untrue
statement  of a material fact or omit to state a material fact necessary to make
the  statements  made, in light of the circumstances under which such statements
were  made,  not  misleading  with  respect to the period covered by this annual
report;

3.     Based  on  my  knowledge,  the  financial statements, and other financial
information  included  in  this  annual  report,  fairly present in all material
respects  the  financial  condition, results of operations and cash flows of the
registrant  as  of,  and  for,  the  periods  presented  in  this annual report;

4.     The  registrant's  other  certifying  officer  and  I are responsible for
establishing  and  maintaining disclosure controls and procedures (as defined in
Exchange  Act  Rules  13a-14  and  15d-14)  for  the  registrant  and  we  have:

     a)     designed  such  disclosure  controls  and  procedures to ensure that
material  information  relating  to  the  registrant, including its consolidated
subsidiaries,  is made known to us by others within those entities, particularly
during  the  period  in  which  this  annual  report  is  being  prepared;

     b)     evaluated  the effectiveness of the registrant's disclosure controls
and  procedures  as  of  a  date within 90 days prior to the filing date of this
annual  report  (the  "Evaluation  Date");  and

     c)     presented  in  this  annual  report  our  conclusions  about  the
effectiveness  of the disclosure controls and procedures based on our evaluation
as  of  the  Evaluation  Date.

5.     The  registrant's other certifying officer and I have disclosed, based on
our most recent evaluation, to the registrant's auditors and the audit committee
of  the  registrant's  board  of directors (or persons performing the equivalent
function):

     a)     all  significant deficiencies in the design or operation of internal
controls  which  could  adversely  affect  the  registrant's  ability to record,
process,  summarize  and  report  financial  data  and  have  identified for the
registrant's  auditors  any  material  weaknesses  in  internal  controls;  and

     b)     any  fraud,  whether  or  not  material, that involves management or
other  employees  who  have  a  significant  role  in  the registrant's internal
controls;  and

6.     The  registrant's  other  certifying officer and I have indicated in this
annual report whether or not there were significant changes in internal controls
or in other factors that could significantly affect internal controls subsequent
to the date of our most recent evaluation, including any corrective actions with
regard  to  significant  deficiencies  and  material  weaknesses.


Date:     March  14,  2003
                                  /s/John  E.  Schneider
                                  ----------------------------------------------
                                  Senior  Vice  President  and
                                  Chief  Financial  Officer
                                  SEMCO  Energy,  Inc.

                                      - 24 -