Exhibit 10.72



 Exhibit 10.72 
 SPECIAL CONTRACT FOR 
 NATURAL GAS TRANSPORTATION SERVICE 

Whereas, ENSTAR Natural Gas Company (“Company”), and Chugach Electric Association, Inc. (“Customer”) desire to enter
into a contract for the transportation of Customer’s natural gas; and 
 Whereas, the Customer is certificated to provide
electric public utility service in and around Anchorage, Alaska; and 
 Whereas, since November 2010, the
Company has transported natural gas to the Customer’s Beluga Power Plant under the Special Contract, signed on October 15th, 2010; and 
 Whereas, the full term of the Special Contract runs from November 15, 2010 through October 31, 2011; and 
 Whereas, the Customer has a continuous need for the transportation of Gas to supply its Beluga Power Plant; and 
 Whereas, due to the changes in Cook Inlet natural gas production since 2008, the Company is no longer able to provide VLFT service to the Beluga Power Plant at the level desired by the Customer year round
on a firm basis; and 
 Whereas, the Customer has asked the Company whether it can provide limited firm transportation service
beginning November 1, 2011, through March 31, 2012, and firm transportation service from April 1, 2012 through October 31, 2012; and 
 Whereas, because of the urgent and temporary situation facing the Customer, the Company is willing to provide transportation service on a limited firm basis for the period commencing on November 1,
2011 and ending on March 31, 2012 (“Period I”); and 

  
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 Whereas, the Company is further willing to provide transportation service on a firm
basis on April 1, 2012 and ending on October 31, 2012 (“Period II”); and 
 Whereas, by doing so, the
Company is not undertaking any express or implied commitment to the Customer beyond the term of this Special Contract, and is not agreeing that it has any obligation to serve the Customer; 

Be it Resolved that due to the unique circumstances of the Customer’s short-term transportation service requirements qualify it for
a special contract; and 
 Further Resolved that the Company is willing to do what it can to support the Customer’s needs
under the terms stated below, provided that it does not interfere with its ability to meet other, existing firm delivery obligations. 
 In consideration of the covenants and conditions in this Special Contract, the parties agree as follows: 
 ARTICLE I 
 PARTIES 

1.1 The parties to this contract are ENSTAR Natural Gas Company, a division of SEMCO Energy, Inc. (“Company”) and Chugach Electric Association,
Inc. (“Customer”). 

  
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 ARTICLE II 

TERM 
  

	2.1	Term 

 2.1.1 The full
term of this Special Contract shall be from November 1, 2011 through October 31, 2012. Any extension of term will be by mutual agreement of both parties, in writing, at least 90 days prior to the expiration date of the full term.

 2.1.2 Period l (Limited Firm Transportation Service) shall be from November 1, 2011 through March 31, 2012.

 2.1.3 Period lI (Firm Transportation Service) shall be from April 1, 2012 through October 31, 2012. 

ARTICLE Ill 
 MODIFIED TARIFF PROVISIONS 
  

	3.1	Transportation of Gas 


The Company agrees to transport up to a maximum of 20,000 thousand cubic feet per day (Mcf/d) during Period I (Limited Firm
Transportation Service) and Period II (Firm Transportation Service). This is the Contract Peak Demand. To assist the Company in providing thls service, the Customer shall provide the Company with the forecasts and nominations required by Sections
1605c and 1605d of the Company’s Tariff, including but not limited to the Monthly and Daily nominations required by Sections 1605d(1) and 1605d(3), and adhere to the balancing provisions as set out in Section 1605e. 

  
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	3.2	Price 

 In both Period I
and Period II, in consideration of the Services provided by the Company to the Customer, the Customer shall pay the Company the rates in the Company’s Tariff Schedule VLFT (Sections 2150b, 2150c, and 2150d) with the exception of the monthly
demand charge as set forth and defined in Section 2150b. The Monthly Demand Charge under this Special Contract will be $40,000. The Monthly Demand Charge set forth in the previous sentence is a discount from the firm charge multiplied by the
Contracted Peak Demand. The Customer will also reimburse the Company for all tariffed charges incurred to transport gas on the west side of Cook Inlet by the Company to provide Services under this Special Contract. The terms of Section 2150a of
the Company’s Tariff shall also apply, except that a separate Very Large Firm Transportation Service Agreement is not required. 
  

	3.3	Period I Services 

  

	3.3.1	During Period 1, the Company will use commercially reasonable efforts to provide transportation services to the Customer up to the Contracted Peak Demand. However, the
Company will not incur transportation fees to support this Special Contract except when such transportation fees are reimbursable by the Customer, as provided for in Article 3.2. The Company is not required to curtail services to other firm service
customers to provide transportation services under this Special Contract. 

 3.3.2 If the Company is unable to
deliver the Contracted Peak Demand, the Customer agrees to waive reimbursement from the Company for any Interruption 

  
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Expense it might incur as defined by the Company’s Tariff Section 1205 (Interruption Cost) for Period I. The pricing agreed to in this Special Contract, which covers the full period of the
agreement (Periods I and II), is structured with a price discount to acknowledge Limited Firm Transportation Service provided by the Company during Period I. 
  

	3.3.3	The Company will not be responsible for any damages the Customer may incur as the result of the Company’s inability to meet the Contracted Peak Demand during
Period I – Limited Firm Transportation Service, including reimbursement for any Interruption Costs as specified in Article 3.3.2 above. 

  

	3.3.4	The Company and the Customer will work together to utilize the steps defined in the 2009 Gas Emergency Agreement Letter to maintain adequate transmission and
distribution pressures in the Company’s transportation system during any gas supply emergency. 

  

	3.3.5	If the Customer incurs Interruption Expense as a result of curtailment or interruption of any or all of the transportation of the Contracted Peak Demand during Period
I, it is not entitled to reimbursement of those Interruption Expenses by the Company. This Special Contract does not affect the Customer’s right for reimbursement if the Customer incurs Interruption Expenses for events unrelated to curtailment
or interruption of the transportation of the Contracted Peak Demand. Examples of events that could cause interruption or curtailment are presented in Exhibit A. 


  
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	3.4	Nominations and Balancing 

  

	3.4.1	Nominations shall be provided to ENSTAR Gas Control in writing and confirmed with ENSTAR Gas Control before gas flows. The Customer agrees to provide the initial
transportation nominations by 12:00 PM (noon) each day prior to requesting transportation service. The customer agrees to use its best efforts to nominate gas into the ENSTAR system on a daily basis using four (4) standard nomination periods in
a day (24 hour period starting at 12:00 AM through 11:59 PM (midnight}): 

 a. 12:00 AM to 6:00AM 

b. 6:00AM to 12:00 PM 
 c. 12:00 PM to 6:00 PM 
 d. 6:00PM to 11:59.59 PM 

The Customer will provide estimated hourly set points for Meter 8107 and the Company will apply its best efforts to follow. 

The Customer will nominate gas based on an average load calculation for each intra-day nomination period. The Company and Customer
understand that Customer deliveries will vary from the average based on actual (instantaneous) generation requirements. 
  

	3.4.2	Customer will comply with Daily balancing tolerances per the Tariff. The Customer will schedule daily gas balance accrual settlement on a weekly basis.


  

	3.4.3	 Customer acknowledges that events outside the control of the Company may limit the Company’s ability to transport natural gas. These events
include: Cold Weather, either severe cold or continuously cold temperatures which may reduce 



  
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the Company’s line pressures; and restricted supplies of natural gas available from west side producers. The Company will communicate with the Customer to provide reasonable notification of
possible transportation constraints. In the event of transportation constraints under this Article, to the extent possible, the Company will reduce transportation services gradually. The Company will notify Customer as soon as it is aware of an
impending delivery constraint, and will endeavor to avoid sudden or instantaneous restrictions of gas to the Beluga Power Plant. 

 ARTICLE IV 
 DELIVERY/RECEIPT POINTS 

 

	4.1	Delivery Point 

 The
Delivery Point for this Special Contract is the Customer’s Beluga Power Plant at the Company’s Metering Station #8253, Meter 8107. 
  

	4.2.	Receipt Points 

  

	4.2.1	Period 1 Receipt Points 


Period I Receipt Points are as follows: 
  

	 	a.	Interconnection of the KNPL- APC Kenai pipelines: Station K681, Meter 

  

	 	411.	Suppliers and Supplier contact information: 

 ConocoPhillips Company (“COP”) and ConocoPhillips Alaska, Inc. (“CPAI”) 

			
	Attention:	  	Cook Inlet Marketing
		  	Cook Inlet Control
	Telephone:	  	(907) 265-1605
		  	(907) 263-4704 or cell: (907) – 748-5966
	Facsimile:	  	(918) 662-6895
	E-mail:	  	 von.l.hutchins@conocophillips.com
 brandy.ostrinsky@conocophillips.com



  
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 b. Interconnection of the Beluga River Unit- APC Beluga pipelines: Station 

B601. Suppliers and Supplier contact information: 
 ConocoPhillips Company (“COP”) and ConocoPhillips Alaska, Inc. (“CPAI”) 

			
	Attention:	  	Cook Inlet Marketing
		  	Cook Inlet Control
		
	Telephone:	  	(907) 265-1605
		  	(907) 263-4704 or cell: (907) – 748-5966
	Facsimile:	  	(918) 662-6895
	E-mail:	  	von.l. hutchins@conocophillips.com
		  	brandy.ostrinsky@conocophillips.com
	
	Union Oil of California (“Union”)
	Attention:	  	Gas Control
	Cc:	  	Commercial Manager
	Telephone:	  	(907) 283-2552
		  	(907) 263-7800
	Facsimile:	  	(907) 263-7847
	E-mail:	  	MCBUAKGC@chevron.com
	Cc:	  	orrga@chevron.com

  

	4.2.2	Period 2 Receipt Points 


Period 2 Receipt Points are as follows: 
  

	 	a.	Interconnection of the KNPL- APC Kenai pipelines: Station K681, Meter 

  

	 	411.	Suppliers and Supplier contact information: 

 ConocoPhillips Company (“COP”) and ConocoPhillips Alaska, Inc. (“CPAI”) 

			
	Attention:	  	Cook Inlet Marketing
		  	Cook Inlet Control
		
	Telephone:	  	(907) 265-1605
		  	(907) 263-4704 or cell: (907) – 748-5966
	Facsimile:	  	(918) 662-6895
	E-mail:	  	von.l.hutchins@conocophillips.com
		  	brandy.ostrinsky@conocophillips.com


  
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	Marathon Alaska Production LLC
	Attention:	  	Gas Supply and Transportation Representative
	Telephone:	  	(907) 283-1308
	Facsimile:	  	(907) 283-6175
	E-mail:	  	fwbassetti@marathonoil.com

  

	 	b.	Interconnection of the KKPL - APC Kenai pipelines: Station K680, Meter 

  

	 	601.	Suppliers and Supplier contact Information: 

  

			
	Marathon Alaska Production LLC
	Attention:	  	Gas Supply and Transportation Representative
	Telephone:	  	(907) 283-1308
	Facsimile:	  	(907) 283-6175
	E-mail:	  	fwbassetti@marathonoil.com

 ARTICLE V 
 APPLICABILITY OF THE COMPANY’S TARIFF 
  

	5.1	Tariff 

 Except as
expressly modified by this Special Contract, all of the terms and conditions of the Company’s Tariff (RCA No. 4) shall apply to the Services provided by the Company to the Customer under this Special Contract, including without limitation
Section 1200 (Interruption). Further, due to the anticipated average and peak daily demand of the Customer, the following Sections of the Company’s Transportation provisions will apply: Section 1605c (Forecasts), Section 1605d (Nominations),
Section 1605e (Balancing), Section1605f (Pressure}, 1605g (Measuring Stations), Section 1605h (Measurement), and Section 1605j (Credit and Billing). 

  
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	5.2	Balancing 

 With respect
to Balancing (Section 1605e) the Customer’s daily nominations will be compared to the actual volumes delivered to the Customer for the purposes of applying the Daily Balancing Tolerances and computing Over or Under Supply (Sections 1605e(3) and
1605e(4)). 
  

	5.3	The Company’s Tariff 


The Customer acknowledges that it has a copy of the Company’s Tariff RCA No. 4 and is familiar with its provisions. 

ARTICLE VI 
 RCA APPROVAL 
  

	6.1	RCA Approval 

 The Parties
understand that this Special Contract does not take effect without the prior approval of the Regulatory Commission of Alaska and is, at all times, subject to revisions by the Commission. This Special Contract shall be effective on the date of a
final order by the RCA approving this Special Contract. 
  

	6.2	Termination Due to Form of RCA Approval or Amendment 

 In the event that revisions to this Special Contract are required by the RCA or any other governmental body acting within its jurisdiction and the revisions are not acceptable to either party, either
party may terminate this Special Contract by giving notice under this Article 6.2 within thirty (30) days of receipt of the order requiring the revisions. 

  
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 ARTICLE VII 

ADDRESSES 
  

	7.1	Notices 

 All notices,
except as provided for nominations or billings, shall be given in writing at the address set forth below. Notice shall be deemed to have been given when received by the Company or the Customer at those addresses. 

 

	 	7.1.1	FOR THE COMPANY: 

 For
Transportation Nominations from the Customer, Scheduling and Day to Day Operations: 
  

			
	 ENSTAR Natural Gas Control
 ATTN: Gas Control
 Physical Address:
 401 E. International Airport Road
 Anchorage, AK 99518

Mailing Address:
 P.O. Box 190288

Anchorage, AK 99519-0288

	Telephone:	  	907 334-7788
	Facsimile:	  	907 334-7779
	E-mail:	  	EnstarGasControl@enstarnaturalgas.com

 For Payments: 
  

			
	 ENSTAR Natural Gas Company
 ATTN: General Accounting Supervisor
 Physical Address:

3000 Spenard Road
 Anchorage, AK 99503

Mailing Address:
 P.O. Box 190288

Anchorage, AK 99519-0288

	Telephone:	  	907 334-7628
	Facsimile:	  	907 272-3403
	E-mail:	  	natalia.nelson@enstarnaturalgas.com


  
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 For all other Notices: 

ENSTAR Natural Gas Company 

			
	Attention: Manager, Gas Supply &
	        Manager, Business Development
	Address: Physical:	  	3000 Spenard Road
		  	Anchorage, AK 99503
	       Mailing:
	  	P.O. Box 190288
		  	Anchorage, AK 99519
	Telephone:	  	(907) 334-7756
	Facsimile:	  	(907) 334-7671
	E-mail:	  	mark.slaughter@enstarnaturalgas.com
		  	Inna.Johansen@enstarnaturalgas.com

  

	 	7.1.2	FOR THE CUSTOMER: 

 For
Scheduling and Day to Day Operations: 
  

			
	Attention:	  	Director System Control
	cc:	  	Manager, Fuel Supply
	Address: Physical:	  	5601 Electron Drive
		  	Anchorage, AK 99518
	       Mailing:
	  	P.O. Box 196300
		  	Anchorage, AK 99519
	Telephone:	  	(907) 762-4779
	Facsimile:	  	(907) 762-4792
	E-mail:	  	burke_wick@chugachelectric.com
		  	andrew_white@chugachelectric.com
	
	For Billings and Payment:
		
	Attention:	  	Director System Control
	Address: Physical:	  	5601 Electron Drive
		  	Anchorage, AK 99518
	       Mailing:
	  	P.O. Box 196300
		  	Anchorage, AK 99519
	Telephone:	  	(907) 762-4779
	Facsimile:	  	(907) 762-4792
	E-mail:	  	burke_wick@chugachelectric.com


  
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	For All Other Notices:
		
	Attention:	  	Director System Control
	Address: Physical:	  	5601 Electron Drive
		  	Anchorage, AK 99518
	       Mailing:
	  	P.O. Box 196300
		  	Anchorage, AK 99519
	Telephone:	  	(907) 762-4779
	Facsimile:	  	(907) 762-4792
	E-mail:	  	burke_wick@chugachelectric.com

 ARTICLE VIII 
 OTHER TERMS 
  

	8.1	Indemnification 

 The
Customer will indemnify, defend and hold the Company harmless against any and all claims by other Cook Inlet purchasers or producers concerning the purchasing of Gas or the priority of Gas taken under this Special Contract. 

 

	8.2	Limit of Obligation 

 By
making this commitment to transport Gas to the Customer, the Company is not agreeing that it has any obligation, beyond the term of this Special Contract, to transport Gas to the Customer’s Beluga Power Plant. 

 

	8.3	Gas Availability 

 This
Special Contract is contingent upon the Customer securing sufficient commitment of Gas from its suppliers and delivery of such gas to the Receipt Points. 

  
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	8.4	Subject to Chugach Board Approval 

 This agreement will be submitted to the Board of Directors of Chugach for its approval and is subject to termination by Chugach if such board approval is not received by October 31, 2011. If this
Agreement is terminated under this Article 8.4, Chugach will provide notification to the Company of such termination no later than November 1, 2011. 
 ARTICLE IX 
 MISCELLANEOUS 

 

	9.1	Binding Upon Successors 


This Special Contract shall be binding upon and inure to the benefit of the legal representatives, successors and assigns of the parties.
Except as provided below, neither party may assign its rights and obligations under this Special Contract without first obtaining the written consent of the other. Consent is not required if all or substantially all of the assets of the Company or
the Customer are acquired by another person or the Company or the Customer is merged, consolidated or reorganized with another person, provided that the assignee assumes in writing the assignor’s obligations under this Special Contract. Nothing
contained in this Article shall prevent either party from pledging or mortgaging its rights under the Special Contract for security of its indebtedness. 

  
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	9.2	Special Contract Not to be Construed Against Either Party as Drafter 

 The parties recognize that this Special Contract is the product of the joint efforts of the parties and agree that it shall be construed according to its plain meaning and shall not be construed against
either party as drafter. 
  

	9.3	Entire Agreement 

 This
Special Contract, including Exhibits A through C and the Company’s Tariff, constitutes the entire agreement and understanding between the parties concerning the subject matter of this transaction, and all prior agreements, understandings and
representations, whether oral or written, concerning this subject matter are superseded by this written Special Contract. No amendment to this Special Contract shall be binding on either party until reduced to writing and signed by the parties.

  

	9.4	Headings 

 The headings
throughout this Special Contract are for reference purposes only and shall not be considered in interpreting this Special Contract. 
  

	9.5	No Incidental or Consequential Damages 

 Neither party shall have any liability to the other for incidental or consequential damages resulting from this Special Contract. 

 

	9.6	No Intended Third-Party Beneficiary 

 The parties understand and agree that no person or entity is an intended third party beneficiary of this Special Contract. 

  
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 IN WITNESS WHEREOF, the parties have executed this Special Contract in two (2) originals. 

 

			
	Chugach Electric Association, Inc.
		
	By:	 	 /s/ Bradley W. Evans

		
	Title:	 	 CEO

		
	Date:	 	 Sept 15, 2011


  

			
	ENSTAR Natural Gas Company, a Division of SEMCO Energy, Inc.
		
	By:	 	 /s/ M. Colleen Starring

		
	Title:	 	 President

		
	Date:	 	 Sept. 15, 2011



  
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 Exhibit A 
 Events That Could Cause Interruption 
  

	 	1.	Cold weather 

 a. Severe cold
(typified by loss of line pressure for 3 to 5 days). 
 i. APC line pressure indicators. 

b. Continuous cold (typified by loss of line pressure over time (5 to 7 days)). 

i. APC line pressure indicators. 
  

	 	2.	Restricted west side supply 

 a.
Low field production from west side suppliers. 
 Event management: 
 ENSTAR will provide reasonable notification to CEA of possible transportation constraint(s) due to a weather event and will exercise commercially reasonable efforts to reduce services under this Special
Contract gradually. 

  
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