Exhibit 10(c)





                       Guaranty Agreement

                             between

                       Idaho Power Company

                               and

                  Bank One Trust Company, N.A.,

                           as Trustee



Relating to $19,885,000 American Falls Reservoir District, Idaho
   American Falls Replacement Dam Refunding Bonds, Series 2000




                    Dated as of April 1, 2000






     This Agreement made and entered into as of April 1, 2000, by
and between Idaho Power Company, a corporation duly organized and
existing  under  the laws of the State of Idaho (the  "Company"),
and  Bank  One  Trust Company, N.A., a banking  association  duly
organized  and  existing under the laws of the United  States  of
America  (the "Trustee"), as trustee, together with any successor
trustee at the time serving as such, under the Indenture of Trust
dated  as  of  April 1, 2000 (the "Indenture"), between  American
Falls  Reservoir District, an instrumentality duly organized  and
existing under the laws of the State of Idaho (the "Issuer"), and
the  Trustee  (all terms not defined herein shall have  the  same
meaning assigned to them in the Indenture.);

                       W I T N E S S E T H

     Whereas,  the  Issuer intends to issue  its  American  Falls
Replacement Dam Refunding Bonds, Series 2000, to be dated  as  of
the  date  of  original  issuance and  delivery  thereof,  in  an
aggregate principal amount of $19,885,000 (the "Bonds") under and
pursuant to the Indenture; and

     Whereas, the proceeds to be derived from the issuance of the
Bonds  are  to  be  applied to refund the  outstanding  principal
amount  of the Issuer's American Falls Refunding Replacement  Dam
Bonds,  1990  Series  A  which were issued  for  the  purpose  of
refunding  bonds previously issued by the Issuer to pay  part  of
the  cost  of construction of the American Falls Replacement  Dam
Program  (as such term is defined in the Falling Water  Contract,
dated  as  of  March  31,  1976 (the "Falling  Water  Contract"),
between  the Issuer and the Company), in part for the benefit  of
the Company; and

     Whereas,  the Company is desirous that the Issuer issue  the
Bonds and apply the proceeds as aforesaid and is willing to enter
into this Agreement in order to enhance the marketability of  the
Bonds and thereby achieve interest cost and other savings to  the
Company  and as an inducement to the purchasers of the Bonds  and
all who shall at any time become owners of the Bonds;

     Now,  Therefore,  in consideration of the  premises  and  in
order  to  enhance  the marketability of the  Bonds  and  thereby
achieve interest costs and other savings to the Company and as an
inducement to the purchasers of the Bonds and those who shall  at
any  time  become owners of the Bonds, the Company  does  hereby,
subject  to the terms hereof, covenant and agree with the Trustee
for the owners from time to time of the Bonds as follows:

     Article I


          Representations and Warranties of the Company

Section 1.1.  The Company hereby represents and warrants that:

          (a)   it is a corporation duly incorporated and in good
     standing  under  the laws of the State  of  Idaho,  is  duly
     qualified  and in good standing as a foreign corporation  in
     the States of Montana, Nevada, Oregon and Wyoming, is not in
     violation of any material provision of its Restated Articles
     of Incorporation, as amended, or of its By-laws, as amended,
     has  the  power to enter into this Agreement  and  has  duly
     authorized  the execution and delivery of this Agreement  by
     proper corporate action, and neither this Agreement nor  the
     performance  of  its  obligations  hereunder  contravene  or
     constitute   a   default  under  any   material   agreement,
     instrument  or  indenture or any material provision  of  its
     Restated Articles of Incorporation, as amended, or of its By-
     laws, as amended, or any other requirement of law;

           (b)    all  approvals  of  any  governmental  body  or
     regulatory  body  necessary  for  the  Company  to  execute,
     deliver  and  perform its obligations under  this  Agreement
     have been obtained; and

          (c)    this  Agreement is a legal,  valid  and  binding
     obligation  of  the  Company  enforceable  against   it   in
     accordance  with  its terms, except to the extent  that  its
     enforceability may be limited by bankruptcy,  insolvency  or
     other  similar laws affecting the enforcement of  creditors'
     rights  in  general.  The enforceability  of  the  Company's
     obligation  hereunder  is subject to general  principles  of
     equity   (regardless  of  whether  such  enforceability   is
     considered at a proceeding in equity or at law).

                           Article II

                            Guaranty

Section  2.1.   The  Company hereby irrevocably,  absolutely  and
unconditionally guarantees to the Trustee, for the benefit of the
owners  from  time to time of the Bonds (a) the full  and  prompt
payment  of the principal of, and premium, if any, on  the  Bonds
when  and  as  the same shall become due, whether at  the  stated
maturity   thereof,   on  a  sinking  fund   payment   date,   by
acceleration,  upon call for redemption (including  a  redemption
resulting from a "Determination of Taxability" as defined in  the
Indenture), or otherwise, (b) the full and prompt payment of  all
interest on the Bonds (including, without limitation, any overdue
interest  and any post-petition interest) when and  as  the  same
shall  become  due  and (c) the full and prompt  payment  of  the
purchase  price  of  Bonds tendered for purchase  by  the  owners
thereof.   All  payments by the Company shall be paid  in  lawful
money of the United States of America.  Each and every default in
payment of the principal of, premium, if any, or interest on  any
Bond shall give rise to a separate cause of action hereunder  and
separate  suits may be brought hereunder as each cause of  action
arises.

Section 2.2.  The Company agrees that if:

           The Company shall file a petition in bankruptcy or for
     reorganization or for an arrangement pursuant to the general
     bankruptcy act, as amended, or any similar Federal or  state
     law, or shall be adjudged a bankrupt or become insolvent, or
     shall  make  an assignment for the benefit of its creditors,
     or  shall  admit in writing its inability to pay  its  debts
     generally  as  they become due, or if a petition  or  answer
     proposing  the adjudication of the Company as a bankrupt  or
     its  reorganization under the general bankruptcy act or  any
     similar Federal or state law shall be filed in any court and
     such  petition or answer shall not be discharged  or  denied
     within  sixty (60) days after the filing thereof,  or  if  a
     receiver, trustee or liquidator (or similar official) of the
     Company  or  of more than one-third of the property  of  the
     Company  shall  be  appointed in any proceeding  or  by  any
     Federal  or  state  officer  or agency,  and  shall  not  be
     discharged within sixty (60) days after such appointment,

the Company will forthwith pay to the Trustee for the benefit  of
the owners of the Bonds, without demand or notice and whether  or
not there has been any other event of default under the Indenture
or the Bonds, the whole amount of the principal of the Bonds then
outstanding and any unpaid interest thereon, with interest on any
principal in default and, to the extent permitted by law, on  any
overdue interest at a rate equal to the interest rate or rates on
the Bonds (as determined from time to time in accordance with the
Indenture).   In the event that the Company shall be required  to
make  any  payment  to  the  Trustee pursuant  to  the  foregoing
provisions  of  this  Section, it  shall,  in  addition  to  such
payment,  pay  to  the Trustee such further amount  as  shall  be
sufficient  to  cover  the  costs  and  expenses  of  collection,
including  a reasonable compensation to the Trustee, its  agents,
attorneys  and counsel, and any expenses or liabilities  incurred
by the Trustee hereunder.

Section  2.3.   The Company hereby assents to all the  terms  and
conditions  of the Bonds and the Indenture and waives (i)  demand
for  the  payment  of  the Bonds and any claim  for  interest  or
premium and any part thereof; (ii) notice of the occurrence of  a
"default" or "event of default" (as such terms are defined in the
Indenture)  under the Indenture; (iii) protest of the  nonpayment
of  the  principal of the Bonds and of any claim for interest  or
premium and any part of any thereof; (iv) notice of presentation,
demand and protest; (v) notice of acceptance of this Agreement or
of  the  terms  and provisions hereof by the Trustee  or  by  the
owners from time to time of any of the Bonds; and (vi) notice  of
any  indulgences  or  extensions granted to  the  Issuer  or  the
Company.  The liability of the Company hereunder shall in no  way
be  affected or impaired by any acceptance by the Trustee or  any
owner  of  the Bonds of any direct or indirect security  for,  or
other guarantees of, any indebtedness, liability or obligation of
the Issuer or of any person to the Trustee or to any owner of the
Bonds  or  by  any  failure, delay, neglect or  omission  by  the
Trustee or any owner of the Bonds to realize upon or protect  any
such  indebtedness, liability or obligation or any notes or other
instruments  evidencing  the  same  or  any  direct  or  indirect
security  therefor or by an approval, consent,  waiver  or  other
action taken, or omitted to be taken, by the Trustee or any owner
of the Bonds.

Section 2.4.  The Company hereby waives, and agrees that it shall
not  exercise, any rights of subrogation to which it may  at  any
time  be entitled by virtue of the performance by the Company  of
any  of  its obligations under this Agreement until such time  as
all  amounts payable under the Bonds or the Indenture shall  have
been duly paid in full.

                           Article III

                        Term; Termination

Section  3.1.  The obligation of the Company under this Agreement
shall   be  absolute  and  unconditional,  irrespective  of   the
validity,  regularity or enforceability of, or the  impossibility
of  performance by any party of its obligations under, the  Bonds
or the Indenture or the Spaceholder Contract or the Falling Water
Contract  or the Supplemental Falling Water Contract,  and  shall
not be affected by reason of any action taken under the Indenture
in  the  exercise of any right or power therein conferred  or  by
reason  of  any failure or omission on the part of the owners  of
the  Bonds or of the Trustee to enforce any rights which they may
have under the Bonds or the Indenture or the Spaceholder Contract
or  the Falling Water Contract or the Supplemental Falling  Water
Contract,  or by reason of any action of the owners of the  Bonds
or  of the Trustee under the Indenture against the Issuer or  the
Company.  The liability of the Company under this Agreement shall
constitute  a  guaranty of payment and not of collectability  and
such  liability shall remain in full force and effect  until  the
entire  principal  of and premium, if any, and  interest  on  the
Bonds  shall  have been paid or provided for (and said  liability
shall  immediately  be  reinstated in the  event  that  any  such
amounts  shall,  for any reason whatsoever,  be  required  to  be
returned  to  the  Issuer  or to the  Company  by  the  recipient
thereof)  and  shall  not  be affected, modified,  discharged  or
impaired  by  the  happening from time  to  time  of  any  event,
including,  without limitation, any of the following, whether  or
not with notice to or consent of the Company:

          (a)    the  extension of the time for  payment  of  any
     principal  of, premium, if any, or interest on any  Bond  or
     under  this  Agreement of the time for  performance  of  any
     other obligation, covenant or agreement under or arising out
     of  the Indenture or this Agreement or the extension or  the
     renewal of either;

           (b)     the   modification,   amendment,   compromise,
     settlement, release, wavier or termination (whether material
     or  otherwise) of any obligation, covenant or  agreement  of
     the   Issuer  under  the  Indenture,  except  as   expressly
     permitted  by and in accordance with the provisions  of  the
     Indenture;

           (c)    the  taking  or  the  omission  of  any  action
     (including,  without limitation, the failure to give  notice
     to  the  Company  of the occurrence of an event  of  default
     under  the Indenture) permitted under the Indenture or under
     this Agreement;

          (d)    the  assignment or mortgaging, or the  purported
     assignment or mortgaging, of all or any part of the interest
     of the Company in the Falling Water Contract;

           (e)     the   voluntary  or  involuntary  liquidation,
     dissolution,   sale   or  other  disposition   of   all   or
     substantially  all  the assets, marshalling  of  assets  and
     liabilities,    receivership,    insolvency,     bankruptcy,
     assignment  for  the  benefit of creditors,  reorganization,
     arrangement, composition with creditors or readjustment  of,
     or  other similar proceedings affecting the Company  or  the
     Issuer or any of the assets of either, or any allegation  of
     the  invalidity or contest of the validity of this Agreement
     in any such proceeding;

          (f)    to  the extent permitted by law, the release  or
     discharge  whether by operation of law or otherwise  of  the
     Company   from   the  performance  or  observance   of   any
     obligation, covenant or agreement under this Agreement;

          (g)    any failure, omission, delay or lack on the part
     of  the Issuer or the Trustee to enforce, assert or exercise
     any  right, power or remedy conferred on the Issuer  or  the
     Trustee in this Agreement or the Indenture, or any other act
     or acts on the part of the Issuer, the Trustee or any of the
     owners from time to time of the Bonds; or

          (h)    the  default or failure of the Company fully  to
     perform  or  observe any obligation, covenant  or  agreement
     under this Agreement.

Section  3.2.  Upon the payment or making provision  therefor  as
provided in the Indenture of the entire principal of and premium,
if   any,  and  interest  on  the  Bonds,  this  Agreement  shall
terminate;  provided, however, that the liability of the  Company
under this Agreement shall immediately be reinstated in the event
that  any  such  amounts  shall, for any  reason  whatsoever,  be
required  to be returned to the Issuer or to the Company  by  the
recipient thereof.

Section  3.3.  No set-off, counterclaim, reduction, or diminution
of  an obligation, or any defense of any kind or nature which the
Company  has or may have against the Issuer or the Trustee  shall
be available hereunder to the Company against the Trustee.

                           Article IV

                            Remedies

Section 4.1.  In the case of an event of a default in the payment
of  principal of or premium, if any, on any Bond when and as  the
same shall become due, whether at the stated maturity thereof, on
a sinking fund payment date, by acceleration, call for redemption
or  otherwise,  or in the case of an event of a  default  in  the
payment  of  any interest on any Bond when and as the same  shall
become  due, the Trustee may, and if requested so to  do  by  the
owners of not less than 25% in aggregate principal amount of  the
Bonds  then  outstanding and upon indemnification as  hereinafter
provided  shall,  be  obligated  to  proceed  hereunder  and  the
Trustee, in its sole discretion, shall have the right to  proceed
first  and  directly  against the Company  under  this  Agreement
without proceeding against or exhausting any other remedies which
it  may have and without resorting to any other security held  by
the Issuer or the Trustee.

     Before  taking any action hereunder, the Trustee may require
that   a  satisfactory  indemnity  bond  be  furnished  for   the
reimbursement  of  all  expenses  and  to  protect  against   all
liability, except liability which is adjudicated to have resulted
from its negligence or willful default by reason of any action so
taken.

Section 4.2.  No remedy herein conferred upon or reserved to  the
Trustee  is  intended  to  be exclusive of  any  other  available
remedies  but each and every such remedy shall be cumulative  and
shall  be  in addition to every remedy given under this Agreement
or  the  Indenture  or now or hereafter existing  at  law  or  in
equity.

                            Article V

                          Miscellaneous

Section  5.1.  The Company shall fully satisfy and discharge  all
of   the  obligations  in  accordance  with  the  terms  of  this
Agreement, it being the intention that such obligations shall  be
separate  and  independent covenants from any agreements  of  the
Company  with the Issuer and that such obligations of the Company
hereunder  shall  continue unaffected unless otherwise  expressly
provided in this Agreement.

Section  5.2.   The Company, at its own expense,  shall  do  such
further  lawful  acts  and things and execute  and  deliver  such
additional   conveyances,  assignments,  assurances,  agreements,
financing  statements and instruments as the Trustee may  at  any
time reasonably request in connection with the administration and
enforcement of this Agreement or any part thereof or in order  to
better  assign,  assure and confirm to the  Trustee  the  rights,
remedies, powers and privileges of the Trustee hereunder  or  for
maintaining,  protecting  and preserving  the  security  interest
created by this Agreement or for carrying out the intentions  and
facilitating the performance of the terms of this Agreement.

Section  5.3.  This Agreement is entered into by the Company  for
the benefit of the Trustee and any successor trustee or successor
trustees and their respective successors and assignees under  the
Indenture  and  the  owners  from  time  to  time  of  the  Bonds
outstanding, all of whom shall be entitled to enforce performance
and  observance of this Agreement to the same extent as  if  they
were parties signatory hereto subject to the conditions contained
in Article IX of the Indenture.

Section  5.4.   The  Company  shall pay  all  fees,  charges  and
expenses  of the Trustee and any paying agent payable  under  the
Indenture or this Agreement for which the Trustee or such  paying
agent has not otherwise received reimbursement.

Section  5.5.   In  the  event any provision  contained  in  this
Agreement  should be breached by the Company and thereafter  duly
waived  by  the  Trustee, such waiver shall  be  limited  to  the
particular breach so waived and shall not be deemed to waive  any
other  breach  hereunder.   No  waiver,  amendment,  release   or
modification of this Agreement shall be established  by  conduct,
custom  or  course  of dealing, but solely by  an  instrument  in
writing duly executed by the Trustee.

Section  5.6.   The  Trustee accepts the trust  created  by  this
Agreement  upon  the  terms  and  conditions  set  forth  in  the
Indenture   and  particularly  Article  IX  thereof,   and   said
provisions are hereby incorporated herein as though set forth  in
full except as any of such provisions may be in conflict with the
express provisions hereof.

Section  5.7.   This  Agreement shall be amended  only  upon  the
written  consent  of  the owners of not less than  sixty  percent
(60%)  in  aggregate principal amount of the Bonds  at  the  time
outstanding  as hereinafter provided.  If the Trustee  should  be
requested to enter into any amendment, change or modification  of
this  Agreement,  it shall upon being satisfactorily  indemnified
with  respect to expenses, cause notice of the proposed execution
of  such amendment, change or modification to be mailed by  first
class  mail to the owners of the Bonds at the addresses shown  in
the registration books maintained pursuant to Section 2.06 of the
Indenture  and  to the Securities Depositories and  two  or  more
Information  Services.  Such notice shall briefly set  forth  the
nature  of  the  proposed amendment, change or  modification  and
shall  state  that  copies thereof are on file at  the  corporate
trust office of the Trustee for inspection by all Bondowners.  If
within sixty days or such longer period as shall be prescribed by
the  Company following the mailing of such notice, the owners  of
not  less than sixty percent (60%) in aggregate principal  amount
of the Bonds outstanding at the time of the execution of any such
amendment,  change or modification shall have  consented  to  and
approved  the execution thereof as herein provided, no  owner  of
any  Bond shall have any right to object to any of the terms  and
provisions contained therein or the operation thereof or  in  any
manner to question the propriety of the execution thereof  or  to
enjoin or restrain the Trustee or the Company from executing  the
same  or  from  taking  any  action pursuant  to  the  provisions
thereof.   Upon  the execution of any such amendment,  change  or
modification  as  in  this Section permitted and  provided,  this
Agreement  shall be and be deemed to be modified and  amended  in
accordance therewith.  Nothing contained herein shall  permit  or
be  construed as permitting any amendment, change or modification
of  this Agreement which would (a) reduce the amounts payable  by
the  Company hereunder, (b) change the time for payments  of  the
amounts  payable  by  the Company hereunder  or  (c)  change  the
absolute and unconditional nature of this Agreement.

Section  5.8.   The  Company agrees that  it  will  maintain  its
corporate  existence, will not dissolve or otherwise  dispose  of
all  or substantially all of its assets, and will not consolidate
with  or  merge into another corporation, or permit one  or  more
corporations  to  consolidate with or merge  into  it;  provided,
however,  that  the Company may, without violating the  agreement
contained  in  this Section 5.8, consolidate with or  merge  into
another  corporation,  or  permit one  or  more  corporations  to
consolidate with or merge into it, or sell or otherwise  transfer
to  another corporation all or substantially all of its assets as
an   entirety,   if  the  resulting,  surviving,  or   transferee
corporation, as the case may be, is an Idaho corporation, or is a
corporation organized and existing under the laws of one  of  the
States  of  the United States of America and is qualified  to  do
business  in  the  State of Idaho, shall be or thereby  become  a
public utility, shall have a net worth immediately subsequent  to
such  consolidation, merger, sale or transfer, at least equal  to
that  of  the  Company  immediately prior to such  consolidation,
merger, sale or transfer and shall assume in writing all  of  the
obligations of the Company herein.

Section  5.9.  The Company covenants that it is and  will  remain
qualified to do business and be subject to service of process  in
the State of Idaho so long as any of the Bonds are outstanding.

Section 5.10. This Agreement constitutes the entire agreement and
supersedes all prior agreements and understandings, both  written
and  oral, between the parties with respect to the subject matter
hereof,  and  may  be executed in several counterparts,  each  of
which shall be deemed an original and all of which together shall
constitute one and the same instrument.

Section  5.11.  In  the event any one or more  phrases,  clauses,
sentences, Sections or Articles of this Agreement shall  be  held
invalid  or unenforceable by any court of competent jurisdiction,
such  holding shall not affect the validity or enforceability  of
the remaining portions hereof.

Section   5.12.  This  Agreement  may  be  executed  in   several
counterparts, each of which shall be an original,  and  all  such
counterparts shall constitute and be one and the same instrument.

Section  5.13. This Agreement shall be governed by and  construed
in accordance with the laws of the State of Idaho.

Section 5.14. Any notices, requests or other communications given
or  made  hereunder or pursuant hereto shall be  in  writing  and
shall be deemed to have been validly given or made when delivered
or  mailed,  postage prepaid, addressed as follows:   if  to  the
Company  ,  to  1221  West  Idaho  Street,  Boise,  Idaho  83702,
Attention:  Treasury Controller, and if to the Trustee, Corporate
Trust  Department,  or addressed to either party  at  such  other
address as such party shall hereafter furnish to the other  party
hereto in writing.

Section  5.15.  The  captions or headings  of  the  Articles  and
Subsections   herein  have  been  inserted  for  convenience   of
reference  only  and shall in no way affect the  construction  or
interpretation of this Agreement.

     In  Witness Whereof, the Company and the Trustee have caused
this Agreement to be executed in their respective corporate names
and  their respective corporate seals to be affixed and  attested
by their duly authorized officers, all as of the date first above
written.

                                Idaho Power Company


                                 By
                                   Its


                                Bank One Trust Company, N.A.,
                                  as Trustee


                                By
                                  Its