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|   | (i)           adding      the following definitions of “APC”, “BNP Agreement”,  “BNP      Security Agreement”, “BNP Subordination Agreement”, “Designated Account”,      “Funding Agreement”, “Net Profits Interest”, “Second Amendment Effective      Date”, “SNPI”, “SNPI Payout” and “SNPI Purchase Price” in appropriate      alphabetical order: |
|--------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

This Amendment may be executed by one or more of the partieshereto in any number of separate counterparts, each of which shall be deemed anoriginal and all of which, taken together, shall be deemed to constitute one andthe same instrument.  Delivery of an executed counterpart of thisAmendment by facsimile transmission or by electronic mail in pdf form shall beas effective as delivery of a manually executed counterpart hereof.

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| BORROWER:                                                                     |                                                          |
|-------------------------------------------------------------------------------|---------------------------------------------------------------|
|                                                                          |                                                          |
|  NGP      CAPITAL RESOURCES COMPANY                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/      R. Kelly Plato                                       |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
| Title:  Sr.      Vice President                                     |                                                          |
|  SUBSIDIARY      GUARANTORS:                                             |                                                          |
|                                                                          |                                                          |
| NGPC      FUNDING GP LLC                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/ R. KellyPlato                                             |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
| Title:       Sr. Vice President                                          |                                                          |
|                                                      |                                                          |
|                                                                          |                                                          |
| NGPC      FUNDING LP                                                          |                                                          |
| By:      NGPC Funding GP LLC                                                  |                                                          |
| Its      general partner                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/      R. Kelly Plato                                       |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
| Title:       Sr. Vice President                                          |                                                          |
|                                                                          |                                                          |
| NGPC      ASSET HOLDINGS GP, LLC                                              |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/      R. Kelly Plato                                       |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
|                                                                          |                                                          |
|       Title:  Sr.      Vice President |                                                          |
|                                                                          |                                                          |
| NGPC      ASSET HOLDINGS, LP                                                  |                                                          |
| By:      NGPC Asset Holdings GP, LLC                                          |                                                          |
| Its      general partner                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By: /s/ R.      Kelly Plato                                        |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
|  Title:       Sr. Vice President                                    |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| NGPC      NEVADA LLC LLC                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By: /s/ R.      Kelly Plato                                        |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
| Title:       Sr. Vice President                                |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| NGPC      ASSET HOLDINGS III LP                                               |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/      R. Kelly Plato                                       |                                                          |
| Name:  R.      Kelly Plato                                          |                                                          |
| Title:       Sr. Vice President                                     |                                                          |
|                                                 |                                                          |
|                                                                          |                                                          |
| NGPC      HOLDINGS IV LP                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:        /s/ R. Kelly Plato                                 |                                                          |
| .Name:  R.      Kelly Plato                                         |                                                          |
|  Title:       Sr. Vice President                                    |                                                          |
|                                                 |                                                          |
| LENDERS:                                                                      |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| SUNTRUST      BANK                                                            | individually      and as Administrative Agent and as a Lender |
|                                                                          |                                                          |
|                                                                          |                                                          |
|  By:  /s/ James M. Warren                                      |                                                          |
| Name:      James M. Warren                                                    |                                                          |
| Title:   Managing      Director                                |                                                          |
|                                                                          |                                                          |
| COMMERZBANK      AG                                                           |                                                          |
|                                                                          |                                                          |
|  By:   /s/ Andres Campbell                                |                                                          |
|  Name:      Andrew Campbell                                              |                                                          |
| Title:  Senior      Vice president                                  |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| By:   /s/ Janet Lee                                            |                                                          |
|  Name:  Janet      Lee                                         |                                                          |
|  Title:      Assistant Treasurer                                         |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| LANDESBANK      BADEN-WÜRTTEMBERG                                        |                                                          |
|                                                                          |                                                          |
|   By:   /s/ Simone Ehmann                            |                                                          |
|  Name:  Simone      Ehmann                                     |                                                          |
| Title:  Vice      President                                         |                                                          |
|                                                                          |                                                          |
|   By:   /s/ Konrad Kestering                         |                                                          |
|  Name:  Konrad      Kestering                                  |                                                          |
| Title:  Assistant      Vice President                               |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
|                                                                          |                                                          |
| BRANCH      BANK AND TRUST COMPANY                                            |                                                          |
|                                                                          |                                                          |
|  By:  /s/ Greg Drabik                                          |                                                          |
|  Name:  Greg      Drabik                                       |                                                          |
| Title:    Vice      President                             |                                                          |

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