Exhibit 31.2



Certification Required by Rule 13a-14(a)

or Rule 15d-14(a)



I, L. Scott Biar, certify that:



| | 1. | I have reviewed this quarterly report on Form 10-Q of NGP Capital
                                                           Resources Company;
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| | 2. | Based on my knowledge, this report does not contain any untrue
                                                           statement of a material fact or omit to state a material fact necessary
                                                           to make the statements made, in light of the circumstances under which
                                                           such statements were made, not misleading with respect to the period
                                                           covered by this report;
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| | 3. | Based on my knowledge, the financial statements, and other financial
                                                           information included in this report, fairly present in all material
                                                           respects the financial condition, results of operations and cash flows
                                                           of the registrant as of, and for, the periods presented in this report;
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| | 4. | The registrant’s other certifying officer(s) and I are responsible
                                                           for establishing and maintaining disclosure controls and procedures
                                                           (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal
                                                           control over financial reporting (as defined in Exchange Act Rules
                                                           13a-15(f) and 15d-15(f)) for the registrant and have:
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(a) Designed such disclosure controls
and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material
information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;



(b) Designed such internal control over
financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles;



(c) Evaluated the effectiveness of the
registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of
the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and



(d) Disclosed in this  report
any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most
recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected,
or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and



| | 5. | The registrant’s other certifying officer(s) and I have disclosed,
                                                           based on our most recent evaluation of internal control over financial
                                                           reporting, to the registrant’s auditors and the audit committee
                                                           of the registrant’s board of directors (or persons performing
                                                           the equivalent functions):
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(a) Designed such disclosure controls
and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material
information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;



(b) Designed such internal control over
financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles;



Date:	November 7, 2013



| | /s/ L. Scott Biar                                                          
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| | L. Scott Biar                                                              
| | Chief Financial Officer, Treasurer, Secretary  and Chief Compliance Officer