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 Exhibit 31.2Rule 13a-14(a)/15d-14(a)

|   | 1. | I      have reviewed this quarterly report on Form 10-Q of Maine &      Maritimes Corporation (the registrant) for the quarter ended June 30,      2008; |
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|   | 2. | Based      on my knowledge, this quarterly 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 quarterly report; |
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|   | 3. | Based      on my knowledge, the financial statements, and other financial information      included in this quarterly 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 quarterly      report; |
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|   | 4. | The      registrant's other certifying officer 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 we  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 quarterly report is being      prepared; |
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|   | 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; |
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|   | c. | evaluated the effectiveness of      the registrant's disclosure controls and procedures and presented in this      quarterly report our conclusions about the effectiveness of the disclosure      controls and procedures, as of the end of the period covered by this      quarterly report based on ourevaluation; |
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|   | 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 that has materially affected, or is reasonably likely to      materially affect, the registrant’s internal control over financial      reporting; and |
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|   | 5. | The      registrant's other certifying officer 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: |
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|   | a. | all      significant deficiencies and material weaknesses in the design or      operation of internal control over financial reporting which are      reasonably likely to adversely affect the registrant's ability to record,      process, summarize and report financial information;  and |
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|   | b. | any fraud, whether or not      material, that involves Management or other employees who have a      significant role in the registrant's internal control over financial      reporting. |
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| Dated:      August 8, 2008                                     |   |
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|                                                           |   |
|                                                           |   |
| /s/      Michael I. Williams                                   |   |
| Michael      I. Williams                                       |   |
| Senior      Vice President, Chief Financial Officer,           |   |
|     Treasurer      and Assistant Secretary |   |

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