Exhibit  99  -  Press  release  issued  August  5,  2003
- --------------------------------------------------------


SEMCO ENERGY, INC.                                            NEWS RELEASE
28470 13 Mile Road Suite 300
Farmington Hills, MI 48334




FOR  IMMEDIATE  RELEASE

ANALYSTS  CONTACT:  THOMAS  CONNELLY
Director  of  Investor  Relations
Phone:  248-702-6000  Ext.  6240

MEDIA  CONTACT:  FRANCIS  R.  LIEDER
Director  of  Corporate  Communications
Phone:  810-987-2200  Ext.  4186
FAX:  810-989-4098
E-mail:  francis.lieder@semcoenergy.com
         ------------------------------



                SEMCO ENERGY REPORTS SECOND QUARTER 2003 RESULTS

     Farmington  Hills,  MI,  August  5,  2003  - SEMCO ENERGY, INC. (NYSE: SEN)
today  reported  a net loss of $20.6 million, or $1.09 per share, for the second
quarter  of  2003 compared to net income of $45,000, or breakeven on a per share
basis,  for  the second quarter of 2002.  The most significant item contributing
to  the  decrease  in  earnings  was  $24.0  million  of  debt  exchange  and
extinguishments  costs,  which  after  adjusting for income taxes, decreased net
income  by  approximately  $15.6  million,  or  $0.82  per  share.  These  costs
primarily  represent premiums and other expenses the Company was required to pay
in  order  to retire certain debt obligations.  The remainder of the decrease in
earnings  is  due to an increase in interest expense and a decrease in operating
income.  The  increase  in  interest expense was due primarily to an increase in
debt  levels  and  the  mix of long and short-term debt outstanding.  During the
second  quarter  of  2003, when compared to the second quarter of 2002, a larger
portion of the Company's outstanding debt was long-term, which has a higher rate
of  interest  than  the  Company's  short-term  debt.

                                      - 1 -


     Marcus Jackson, Chairman, President and Chief Executive Officer, said, "The
Company's  construction  business continues to experience intense competition as
many  companies  aggressively bid to secure contracts.  This segment incurred an
operating  loss  of  $1.9  million  for  the  second quarter of 2003 compared to
operating  income  of  $1.9 million for the second quarter of last year.  During
the  second  quarter  of  last  year,  the southern division of our construction
business experienced an acceleration of work on projects that had been scheduled
for  the  second  half of 2002, which caused a significant increase in workloads
and  profits during that quarter.  We did not see similar work levels during the
second  quarter  of  this  year."  Mr.  Jackson  also said, "The underground gas
distribution  construction  industry  continues  to  produce weak results due to
generally suppressed economic conditions and intense competition.  Despite these
short-term  issues,  we  continue  to  believe  that  over  the  long  term  our
construction  business  is  positioned  to  realize  increased profitability and
market  share  as  the  activity  in this sector returns to more normal levels."

                                      - 2 -

     Mr.  Jackson  went  on to say, "The Company's gas distribution business had
operating  income of $6.1 million during the second quarter of 2003, compared to
$8.5  million for the second quarter of 2002.  The decrease was due primarily to
an increase in operating expenses and a decrease in gas sales margin due in part
to  warmer  temperatures during this past quarter compared to the second quarter
of  last  year."

     Mr.  Jackson  concluded by saying, "Two key accomplishments occurred during
the  second quarter.  First, the Company settled its rate case with the Michigan
Public  Service  Commission  (MPSC)  and  we  expect the new authorized customer
rates,  which  became effective May 3, 2003, to increase annual revenues by $3.4
million and decrease annual depreciation expense by $1.4 million.  The new rates
were  structured  in  a  way that helps reduce the impact to the Company and its
customers of colder or warmer than normal weather.  The Company also completed a
$300  million  debt issuance with favorable interest terms.  The majority of the
proceeds  were  used  to  refinance  and  repurchase  a portion of the Company's
long-term  debt  and  to  repay  short-term  debt."

                                      - 3 -

     For the six months ended June 30, 2003, the Company had a net loss of $10.0
million,  or  $0.53 per share, compared to net income of $11.4 million, or $0.62
per  share, for the six months ended June 30, 2002.  The decrease in results was
due  primarily  to  the same items that contributed to the decrease in quarterly
results.

     For  the  twelve  months ended June 30, 2003, the Company had a net loss of
$12.4  million,  or  $0.66  per share, compared to a net loss of $.7 million, or
$0.04  per  share,  for  the twelve months ended June 30, 2002.  Results for the
twelve  months  ended  June  30, 2003, include debt exchange and extinguishments
costs, which reduced net income by $15.6 million.  Results for the twelve months
ended  June 30, 2002, include losses from discontinued operations, restructuring
charges,  asset  impairments  and  other  unusual items, which amounted to $10.8
million.  A  significant  decrease  in  operating  results  for  the  Company's
construction  business  contributed  to the reduction in earnings for the twelve
months  ended June 30, 2003, when compared to the same period of the prior year.

                                      - 4 -

     Temperatures  during  the  three  and six-month periods ended June 30, 2003
were  warmer  than  normal  in  Alaska  and colder than normal in Michigan.  The
Company  has  estimated  that  the impact of the warmer than normal temperatures
in  Alaska  and  the  colder  than  normal  temperatures  in Michigan offset one
another  and  thus  had little impact on net income for the three months and six
months  ended  June 30, 2003.  By comparison, during the second quarter of 2002,
temperatures  were  colder  than normal in both Alaska and Michigan.  During the
first  six  months  of  2002,  temperatures  were slightly colder than normal in
Alaska  and  warmer  than  normal  in  Michigan.  The Company has estimated that
variations  from  normal  temperatures in Alaska and Michigan combined increased
net  income  by  approximately $.8 million during the second quarter of 2002 and
decreased  net  income by approximately $1.5 million during the six months ended
June 30, 2002.


BUSINESS  SEGMENT  RESULTS

GAS  DISTRIBUTION

     The  Gas  Distribution  Business  reported operating income of $6.1 million
during  the  second  quarter  of 2003 compared to $8.5 million during the second
quarter  of  2002.  The  decrease  was  due primarily to increases in commercial
insurance  costs  and  employee  benefit  costs,  including health care expense,
pension  expense  and  retiree  medical  expense.  In addition, gas sales margin
decreased,  when compared to the second quarter of 2002, due primarily to warmer
temperatures  during  the second quarter of 2003, a decrease in gas cost savings
realized, and the impact of a reduction in customer rates at ENSTAR effective in
September  2002.  These items were partially offset by the impact of an increase
in  customer rates for the Company's MPSC customers in Michigan effective in May
2003  and  the  addition  of  new  customers.

                                      - 5 -

     Operating  income  for the six months ended June 30, 2003 was $36.6 million
compared  to $38.7 million during the six months ended June 30, 2002.  The items
discussed  above  that  contributed  to  the  decrease in quarterly results also
contributed  to  the  decrease  in  six-month  results,  with  the  exception of
temperatures,  which  were colder during the six months ended June 30, 2003 and,
therefore,  partially offset the other items that contributed to the decrease in
operating  income.

     The  Gas  Distribution  Business  had  384,980  customers  at June 30, 2003
compared  to  377,480  at June 30, 2002.  The volume of gas sold and transported
during  the three months ended June 30, 2003 and 2002 was 20.5 Bcf and 22.6 Bcf,
respectively.  During the six months ended June 30, 2003 and 2002, the volume of
gas  sold  and  transported  was  63.1  Bcf  and  61.2  Bcf,  respectively.


                                      - 6 -


CONSTRUCTION  SERVICES

     The  Construction  Services  Business  reported  an  operating loss of $1.9
million  for  the  second  quarter  of 2003 compared to operating income of $1.9
million for the second quarter of 2002. Operating revenue for the second quarter
of  2003  and  2002  was  $19.9  million  and  $36.5 million, respectively.  The
decrease  in  revenues  and  operating results is due primarily to a significant
reduction  in  work levels when compared to last year. During the second quarter
of  last year, the southern division of the construction business experienced an
acceleration  of work on projects that had been scheduled for the second half of
2002,  which  caused  a significant increase in workloads and profits during the
second  quarter.  The  Company did not see similar work levels during the second
quarter  of  this year.  In addition, the construction services business has bid
on  numerous  projects  in  2003  but  has not experienced the expected level of
success  in  being  awarded these projects due to the intense competition in the
industry.  The  southern division also experienced unprecedented rainfall during
the  second  quarter  of  2003,  which  interrupted  work execution for extended
periods  of  time.

     The  Construction  Services  Business  reported  an  operating loss of $5.5
million  for  the  first  six months of 2003 compared to operating income of $.6
million for the six months ended June 30, 2002.  Operating revenue for the first
six  months  of 2003 and 2002 was $35.0 million and $62.1 million, respectively.
The factors contributing to the decrease in second quarter results were also the
primary  contributor  to  the  decrease  in the six-month results.  In addition,
temperatures  were  colder  than  normal  in  the northern regions of the United
States  during  the  first  quarter  of  2003.  As  a  result,  frost conditions
inhibited  construction  activity during the entire first quarter of 2003, which
also  contributed  to  the  decrease  in operating results during the six months
ended  June  30,  2003.

                                      - 7 -

     The  decrease  in  operating  revenue was due primarily to the reduction in
projects  in the southern division and the ceasing of construction operations in
certain  regions  of  the  northern  division.


INFORMATION  TECHNOLOGY

     The  operating  income  of the Information Technology Services Business for
the second quarter of 2003 was $.2 million, which was essentially unchanged from
the  second  quarter of 2002.  Operating income for the first six months of 2003
and  2002  was  $.4  million  and  $.3  million,  respectively.  The increase in
operating  income  was  due  primarily  to  reductions in overhead and marketing
costs.

     Operating  revenue  was  $2.3 million during the second quarter of 2003 and
during  the  second quarter of 2002.  Operating revenue for the first six months
of  2003  and  2002  was  $4.4  million  and  $4.6  million,  respectively.


                                      - 8 -

PROPANE,  PIPELINES  AND  STORAGE

     The  Propane,  Pipelines  and Storage Business reported operating income of
$.3  million  for  the  second  quarter  of 2003 compared to $.4 million for the
second quarter of 2002.  Operating income for the six months ended June 30, 2003
was  $1.2  million  compared  to  $1.0 million for the six months ended June 30,
2002.  The  increase  was  due primarily to colder temperatures, which increased
propane  sales  and  margins,  and a decrease in operating expenses and business
taxes.

     Operating revenue was $1.4 million for the three months ended June 30, 2003
and  the  three  months ended June 30, 2002.  Operating revenue during the first
six  months  of  2003  and 2002 was $4.2 million and $3.7 million, respectively.


     SEMCO  ENERGY, Inc. is a diversified energy and infrastructure company that
distributes  natural  gas  to  approximately  385,000  customers in Michigan and
Alaska.  It  also  owns and operates businesses involved in natural gas pipeline
construction services, propane distribution and intrastate pipelines and natural
gas  storage  in various regions of the United States.  In addition, it provides
information  technology  and outsourcing services, specializing in the mid-range
computer  market.

    The  following  is  a  "Safe-Harbor"  statement under the Private Securities
Litigation Reform Act of 1995.  This release contains forward-looking statements
that  involve  risks  and uncertainties. Statements that are not historic facts,
including  statements  about  the  Company's  outlook, beliefs, plans, goals and
expectations,  are  forward-looking  statements.  Factors  that  may  impact
forward-looking  statement  include,  but  are  not  limited  to, the effects of
weather,  the  economic  climate,  competition,  commodity  prices,  changing
conditions  in  the  capital  markets, regulatory approval processes, success in
obtaining  new  business  and  other  risks  detailed  from  time to time in the
company's  Securities  and  Exchange  Commission  filings.

                                      # # #

                                      - 9 -




                                                    SEMCO ENERGY, INC.
                                            NEWS RELEASE STATISTICS (UNAUDITED)
                                         (in thousands, except per share amounts)


                                                           THREE MONTHS ENDED     SIX MONTHS ENDED    TWELVE MONTHS ENDED
                                                                JUNE 30,              JUNE 30,              JUNE 30,
                                                          --------------------  --------------------  --------------------
                                                            2003       2002       2003       2002       2003       2002
                                                          ---------  ---------  ---------  ---------  ---------  ---------
                                                                                               
FINANCIAL SUMMARY
- -----------------

  Operating revenues . . . . . . . . . . . . . . . . . .  $ 99,525   $106,100   $306,629   $262,011   $525,583   $471,344

  Restructuring and impairment charges . . . . . . . . .         -          -          -          -          -      6,103
  Other operating expenses . . . . . . . . . . . . . . .    95,738     95,759    275,363    223,051    476,568    412,901
                                                          ---------  ---------  ---------  ---------  ---------  ---------
  Operating income . . . . . . . . . . . . . . . . . . .     3,787     10,341     31,266     38,960     49,015     52,340

  Other income and (deductions)
    Interest expense . . . . . . . . . . . . . . . . . .    (9,052)    (7,477)   (17,009)   (15,151)   (33,126)   (31,216)
    Debt exchange and extinguishment costs . . . . . . .   (24,030)         -    (24,030)         -    (24,030)         -
    Other. . . . . . . . . . . . . . . . . . . . . . . .       781        709      1,479      1,034      2,683      2,003
                                                          ---------  ---------  ---------  ---------  ---------  ---------
      Total other income and (deductions). . . . . . . .   (32,301)    (6,768)   (39,560)   (14,117)   (54,473)   (29,213)

  Income tax expense . . . . . . . . . . . . . . . . . .   (10,033)     1,378     (2,637)     9,168     (1,666)     9,521
                                                          ---------  ---------  ---------  ---------  ---------  ---------

  Income before dividends on trust preferred securities
    and discontinued operations. . . . . . . . . . . . .   (18,481)     2,195     (5,657)    15,675     (3,792)    13,606
  Dividends on trust preferred securities,
    net of income taxes. . . . . . . . . . . . . . . . .    (2,150)    (2,150)    (4,300)    (4,300)    (8,601)    (8,603)
                                                          ---------  ---------  ---------  ---------  ---------  ---------
  Income from continuing operations. . . . . . . . . . .   (20,631)        45     (9,957)    11,375    (12,393)     5,003
  Income (loss) from discontinued operations,
    net of income taxes. . . . . . . . . . . . . . . . .         -          -          -          -         10     (5,706)
                                                          ---------  ---------  ---------  ---------  ---------  ---------
  Net income (loss) available to common shareholders . .  $(20,631)  $     45   $ (9,957)  $ 11,375   $(12,383)  $   (703)
                                                          =========  =========  =========  =========  =========  =========

  Earnings per share - basic
    Net income from continuing operations. . . . . . . .  $  (1.09)  $   0.00   $  (0.53)  $   0.62   $  (0.66)  $   0.27
    Net income (loss) available to common shareholders .  $  (1.09)  $   0.00   $  (0.53)  $   0.62   $  (0.66)  $  (0.04)

  Earnings per share - diluted
    Net income from continuing operations. . . . . . . .  $  (1.09)  $   0.00   $  (0.53)  $   0.62   $  (0.66)  $   0.27
    Net income (loss) available to common shareholders .  $  (1.09)  $   0.00   $  (0.53)  $   0.62   $  (0.66)  $  (0.04)

  Cash dividends per share . . . . . . . . . . . . . . .  $  0.125   $  0.125   $  0.250   $  0.335   $  0.500   $  0.755

  Average number of common shares outstanding
    Basic. . . . . . . . . . . . . . . . . . . . . . . .    18,988     18,431     18,884     18,374     18,726     18,261
    Diluted. . . . . . . . . . . . . . . . . . . . . . .    18,988     18,472     18,884     18,400     18,726     18,261


                                      - 10 -




                                                      SEMCO ENERGY, INC.
                                              NEWS RELEASE STATISTICS (UNAUDITED)
                                       (dollars in thousands, except per share amounts)


                                                               THREE MONTHS ENDED     SIX MONTHS ENDED    TWELVE MONTHS ENDED
                                                                    JUNE 30,              JUNE 30,              JUNE 30,
                                                              --------------------  --------------------  --------------------
                                                                2003       2002       2003       2002       2003       2002
                                                              ---------  ---------  ---------  ---------  ---------  ---------
                                                                                                   
BUSINESS SEGMENT INFORMATION
- ------------------------------------------------------------

  Operating revenues
    Gas Distribution . . . . . . . . . . . . . . . . . . . .  $ 80,122   $ 70,355   $270,934   $201,807   $433,838   $340,746
    Construction Services. . . . . . . . . . . . . . . . . .    19,864     36,524     34,976     62,105     92,125    136,313
    Information Technology Services. . . . . . . . . . . . .     2,268      2,317      4,422      4,578      9,462      9,705
    Propane,Pipelines and Storage. . . . . . . . . . . . . .     1,414      1,416      4,241      3,654      7,645      6,979
    Corporate and Other (includes intercompany eliminations)    (4,143)    (4,512)    (7,944)   (10,133)   (17,487)   (22,399)
                                                              ---------  ---------  ---------  ---------  ---------  ---------
      Total operating revenues . . . . . . . . . . . . . . .  $ 99,525   $106,100   $306,629   $262,011   $525,583   $471,344
                                                              =========  =========  =========  =========  =========  =========

  Operating income (loss)  (a)
    Gas Distribution . . . . . . . . . . . . . . . . . . . .  $  6,068   $  8,535   $ 36,601   $ 38,727   $ 56,950   $ 56,219
    Construction Services. . . . . . . . . . . . . . . . . .    (1,881)     1,939     (5,521)       629     (8,149)       252
    Information Technology Services. . . . . . . . . . . . .       157        143        377        319        660        513
    Propane, Pipelines and Storage . . . . . . . . . . . . .       323        381      1,221        990      2,177      1,779
    Corporate and Other (includes intercompany eliminations)      (880)      (657)    (1,412)    (1,705)    (2,623)    (6,423)
                                                              ---------  ---------  ---------  ---------  ---------  ---------
      Total operating income . . . . . . . . . . . . . . . .  $  3,787   $ 10,341   $ 31,266   $ 38,960   $ 49,015   $ 52,340
                                                              =========  =========  =========  =========  =========  =========

OPERATING STATISTICS
- ------------------------------------------------------------

  Gas distribution:
    Volumes sold (MMcf). . . . . . . . . . . . . . . . . . .    10,785     11,645     40,545     38,207     67,395     64,573
    Volumes transported  (MMcf). . . . . . . . . . . . . . .     9,682     10,939     22,598     22,990     44,529     44,133
    Number of customers at end of period . . . . . . . . . .   384,980    377,480    384,980    377,480    384,980    377,480
    Weather statistics:
      Degree days
        Alaska . . . . . . . . . . . . . . . . . . . . . . .     1,545      1,863      4,976      5,672      8,696     10,650
        Michigan . . . . . . . . . . . . . . . . . . . . . .     1,041      1,039      4,647      4,043      7,272      6,232
      Percent colder (warmer) than normal
        Alaska . . . . . . . . . . . . . . . . . . . . . . .     (3.5)%      15.1%    (10.9)%       1.0%    (14.3)%       3.8%
        Michigan . . . . . . . . . . . . . . . . . . . . . .       9.8%      10.6%      10.6%     (3.8)%       8.2%     (8.1)%

  Construction:
    Feet of pipe installed (in thousands). . . . . . . . . .       976      1,189      1,427      2,244      4,381      6,983

  Propane Distribution:
    Gallons sold (in thousands). . . . . . . . . . . . . . .       717        783      2,662      2,386      4,769      4,342






<FN>

(a)     Results  for the twelve months ended June 30, 2002 include restructuring charges, impairments and other unusual items.



                                      - 11 -