|   | 1.     | I have reviewed this quarterly      report on Form 10-Q of Ridgewood Electric Power Trust      IV;                                                                                                                                                                                                                              |
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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; |

|   | 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 thisreport; |
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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)) for the registrant and    have: |
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|   | 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 equivalentfunctions): |
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| /s/      Randall D. Holmes    |
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| Name:     | Randall      D. Holmes |
| Title:         | Chief      Executive Officer(Principal      Executive Officer)  |
| Date:               | February      20, 2008 |

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