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Exhibit 4.171


Form 3000-3

   UNITED STATES

   FORM APPROVED(May 2006)

   DEPARTMENT OF THE INTERIOR

   OMB NO. 1004 -0034BUREAU OF LAND MANAGEMENT

   Expires: April 30, 2009ASSIGNMENT OF RECORD TITLE INTEREST IN A

   Lease Serial No.**LEASE FOR OIL AND GAS OR GEOTHERMAL RESOURCES**

   **CACA 43003**Lease Effective DateMineral Leasing Act of 1920 (30 U.S.C. 181 et seq.)

   (Anniversary Date)Act for Acquired Lands of 1947 (30 U.S.0 351 - 359)

   **09/01/2009**Geothermal Steam Act of 1970 (30 U.S.C. 1001 -1025)

   New Serial No.Department of the Interior Appropriations Act, Fiscal Year 1981 (42 U.S.C. 6508)Type or print plainly in ink and sign in ink.
 PART A: ASSIGNMENT 1.

   Assignee*

   NGP Truckhaven LLCStreet

   840-1140 West Pender StreetCity, State, Zip Code

   Vancouver, BC V6E 4G1 CANADA

   la. Assignor Layman Energy Associates, Inc.
  *If more than one assignee, check here [   ] and list the name(s) and address(es) of all addtional assignees on page 2 of this form or on a separate attached sheet of paper. This record title assignment is for. (Check one) [   ] Oil and Gas Lease, or

   [ X ] Geothermal LeaseInterest conveyed: (Check one or both, as appropriate) [ X ] Record Title,

   [ X ] Overriding Royalty, payment out of production or other similar interests or payments
  2. This assignment conveys the following interest:Land Description

   

   Percent of Interest

   

   Percent ofAdditional space on page 2, if needed. Do not submit documents or agreements other than this form; such documents or agreements shall only be referenced herein.

   Owned

   Conveyed

   Retained

   Overriding RoyaltySimilar InterestsReserved

   Previouslyreservedor conveyeda

   b

   c

   d

   e

   fGeothermal lease CACA 43003, containing 1281.32 acres in sections 2 (all) and 12 (all) in Township 11 South, Range 9 East

  100%

  100%

  0%

  0.7% + devel. Fee $20K/MW
 FOR BLM USE ONLY - DO NOT WRITE BELOW THIS LINEUNITED STATES OF AMERICA This assignment is approved solely for administrative purposes. Approval does not warrant that either party to this assignment holds legal or equitable title to this lease. [ X ] Assignment approved for above described lands;

   

   [   ] Assignment approved for attached land descriptionAssignment approved effective Jul 01 2011

   

   [   ] Assignment approved for land description indicated on reverse of this formBy /s/ Debra Marsh

   

   /s/ Supervisor Branch of Adjudication

   Jun 20 2011Bureau of Land Management

   

   Title

   Date(Continued on page 2)


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Part A (Continued): ADDITIONAL SPACE for names and addresses of additional assignees in Item No.1, if needed, or for Land Description in Item No. 2, if needed. Effective upon execution of this assignment of lease CACA 43003, the Assignee and Nevada Geothermal Power, Inc. assume the obligations of Iceland America Energy, Inc. (IAE) under an agreement signed by IAE and Layman Energy Associates, Inc. (LEA) on 25 October 2010 under which IAE is to pay to LEA a development fee of $20,000/MW based on the size of any power plant constructed and 0.7% royalty payment on gross proceeds from sale of electricity from the project. PART B - CERTIFICATION AND REQUEST FOR APPROVAL
  1.

   The Assignor certifies as owner if an interest in the above designated lease that he/she hereby assigns to the above assignee(s) the rights specified above.2.

   Assignee certifies as follows: (a) Assignee is a citizen of the United States; an association of such citizens; a municipality; or a corporation organized under the laws of the United States or of any State or territory thereof. For the assignment of NPR-A leases, assignee is a citizen, national, or resident alien of the United States or association of such citizens, nationals, resident aliens or private, public or municipal corporations, (b) Assignee is not considered a minor under the laws of the State in which the lands covered by this assignment are located; (c) Assignee's chargeable interests, direct and indirect, in each public domain and acquired lands separately in the same State, do not exceed 246,080 acres in oil and gas leases (of which up to 200,000 acres may be in oil mid gas options), or 300,000 acres in leases in each leasing District in Alaska of which up to 200,000 acres may be in options, if this is an oil and gas lease issued in accordance with the Mineral Leasing Act of 1920, or 51,200 acres in any one State if this is a geothermal lease; (d) All parties holding an interest in the assignment are otherwise in compliance with the regulations (43 CFR Group 3100 or 3200) and the authorizing Acts; (e) Assignee is in compliance with reclamation requirements for all Federal oil and gas lease holdings as required by sec. 17(g) of the Mineral Leasing Act; and (1) Assignee is not in violation of sec 41 of the Mineral Leasing Act.3.

   Assignee's signature to this assignment constitutes acceptance of all applicable terms, conditions, stipulations and restrictions pertaining to the lease described herein.
  For geothermal assignments, an overriding royalty may not be less than one-fourth (1/4) of one percent of the value of output, nor greater than 50 percent of the rate of loyalty due to the United States when this assignment is added to all previously created overriding royalties (43 CFR 3241).
 I certify that the statements made herein by me are true, complete, and correct to the best of my knowledge and belief and are made in good faith. Executed this **2nd** day of **June**20**11**

   Executed this __ day of __ 20__
  Name of Assignor as shown on current lease

   **Layman Energy Associates, Inc**

   ****(Please type or print)Assignor

   /s/ President

   

   Assignee

   /s/ President(Signature)

   

   

   (Signature)or

   

   

   

   orAttorney-in-fact

   

   

   Attorney-in-fact(Signature)

   

   

   (Signature)**1582 Cordova Drive**(Assignor’s Address)**San Luis Obispo**

   **CA**

   **93405**(City)

   (State)

   (Zip Code)
  Title 18 U.S.C. See.1001 makes it a crime for any person knowingly and willfully to make to any Department or agency of the United States any false, fictitious, or fraudulent statements or representations as to any matter within its jurisdiction.(Continued on page 3)

   (Form 3000-3, page 2)


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