SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                ----------------

                                  SCHEDULE 13G
                                 (Rule 13d-102)

                                ----------------

    INFORMATION TO BE INCLUDED IN STATEMENTS PURSUANT TO RULES 13d-1(b), (c)
        AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 UNDER THE
                         SECURITIES EXCHANGE ACT OF 1934

                                (Amendment No. 1)

                     TREMISIS ENERGY ACQUISITION CORPORATION
                                (Name of Issuer)

                         Common Stock, $0.0001 Par Value
                         (Title of Class of Securities)

                                    894727106
                                    894727205
                                    894727114
                                 (CUSIP Numbers)

                                January 23, 2006
             (Date of Event Which Requires Filing of this Statement)

         Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

         [ ] Rule 13d-1(b)

         [X] Rule 13d-1(c)

         [ ] Rule 13d-1(d)

-----------

         * The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

         The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 2 OF 13
           894727205
           894727114
------------------------------------------------------------------------------
(1)   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      North Pole Capital Master Fund
------------------------------------------------------------------------------
(2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a) [ ]
                                                                 (b) [X]
------------------------------------------------------------------------------
(3)   SEC USE ONLY
------------------------------------------------------------------------------
(4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                       Cayman Islands
------------------------------------------------------------------------------

NUMBER OF         (5)  SOLE VOTING POWER
                                 -0-
SHARES            ____________________________________________________________

BENEFICIALLY      (6)  SHARED VOTING POWER
                                 -0-
OWNED BY          ____________________________________________________________

EACH              (7)  SOLE DISPOSITIVE POWER
                                 -0-
REPORTING         ____________________________________________________________

PERSON WITH       (8)  SHARED DISPOSITIVE POWER
                                 -0-
------------------------------------------------------------------------------
      (9)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                 -0-
------------------------------------------------------------------------------
      (10)  CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES                       [ ]
------------------------------------------------------------------------------
      (11)  PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                 -0%-
------------------------------------------------------------------------------
      (12)  TYPE OF REPORTING PERSON
                                 CO
------------------------------------------------------------------------------





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 3 OF 13
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------------------------------------------------------------------------------
(1)   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      Paul Sabourin
------------------------------------------------------------------------------
(2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a) [ ]
                                                                 (b) [X]
------------------------------------------------------------------------------
(3)   SEC USE ONLY
------------------------------------------------------------------------------
(4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                       Toronto, Canada
------------------------------------------------------------------------------

NUMBER OF         (5)  SOLE VOTING POWER
                                 -0-
SHARES
                  ------------------------------------------------------------
BENEFICIALLY      (6)  SHARED VOTING POWER
                                 -0-
OWNED BY          ____________________________________________________________

EACH              (7)  SOLE DISPOSITIVE POWER
                                 -0-
REPORTING         ____________________________________________________________

PERSON WITH       (8)  SHARED DISPOSITIVE POWER
                                 -0-
------------------------------------------------------------------------------
      (9)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                 -0-
------------------------------------------------------------------------------
      (10)  CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES                       [ ]
------------------------------------------------------------------------------
      (11)  PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                 -0%-
------------------------------------------------------------------------------
      (12)  TYPE OF REPORTING PERSON
                                 IN
------------------------------------------------------------------------------





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 4 OF 13
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------------------------------------------------------------------------------
(1)   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      John Paul Cahill
------------------------------------------------------------------------------
(2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a) [ ]
                                                                 (b) [X]
------------------------------------------------------------------------------
(3)   SEC USE ONLY
------------------------------------------------------------------------------
(4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                       Toronto, Canada
------------------------------------------------------------------------------

NUMBER OF         (5)  SOLE VOTING POWER
                                 -0-
SHARES
                  ------------------------------------------------------------
BENEFICIALLY      (6)  SHARED VOTING POWER
                                 -0-
OWNED BY          ____________________________________________________________

EACH              (7)  SOLE DISPOSITIVE POWER
                                 -0-
REPORTING         ____________________________________________________________

PERSON WITH       (8)  SHARED DISPOSITIVE POWER
                                 -0-
------------------------------------------------------------------------------
      (9)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                 -0-
------------------------------------------------------------------------------
      (10)  CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES                       [ ]
------------------------------------------------------------------------------
      (11)  PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                 -0%-
------------------------------------------------------------------------------
      (12)  TYPE OF REPORTING PERSON
                                 IN
------------------------------------------------------------------------------





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 5 OF 13
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------------------------------------------------------------------------------
(1)   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      Kamran Siddiqui
------------------------------------------------------------------------------
(2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a) [ ]
                                                                 (b) [X]
------------------------------------------------------------------------------
(3)   SEC USE ONLY
------------------------------------------------------------------------------
(4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                       Toronto, Canada
------------------------------------------------------------------------------

NUMBER OF         (5)  SOLE VOTING POWER
                                 -0-
SHARES
                  ------------------------------------------------------------
BENEFICIALLY      (6)  SHARED VOTING POWER
                                 -0-
OWNED BY          ____________________________________________________________

EACH              (7)  SOLE DISPOSITIVE POWER
                                 -0-
REPORTING         ____________________________________________________________

PERSON WITH       (8)  SHARED DISPOSITIVE POWER
                                 -0-
------------------------------------------------------------------------------
      (9)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                 -0-
------------------------------------------------------------------------------
      (10)  CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES                       [ ]
------------------------------------------------------------------------------
      (11)  PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                 -0%-
------------------------------------------------------------------------------
      (12)  TYPE OF REPORTING PERSON
                                 IN
------------------------------------------------------------------------------





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 6 OF 13
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------------------------------------------------------------------------------
(1)   NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      Polar Securities Inc.
------------------------------------------------------------------------------
(2)   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a) [ ]
                                                                 (b) [X]
------------------------------------------------------------------------------
(3)   SEC USE ONLY
------------------------------------------------------------------------------
(4)   CITIZENSHIP OR PLACE OF ORGANIZATION
                       Canada
------------------------------------------------------------------------------

NUMBER OF         (5)  SOLE VOTING POWER
                                 -0-
SHARES
                  ------------------------------------------------------------
BENEFICIALLY      (6)  SHARED VOTING POWER
                                 -0-
OWNED BY          ____________________________________________________________

EACH              (7)  SOLE DISPOSITIVE POWER
                                 -0-
REPORTING         ____________________________________________________________

PERSON WITH       (8)  SHARED DISPOSITIVE POWER
                                 -0-
------------------------------------------------------------------------------
      (9)   AGGREGATE AMOUNT BENEFICIALLY OWNED
            BY EACH REPORTING PERSON
                                 -0-
------------------------------------------------------------------------------
      (10)  CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES                       [ ]
------------------------------------------------------------------------------
      (11)  PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
                                 -0%-
------------------------------------------------------------------------------
      (12)  TYPE OF REPORTING PERSON
                                 CO
------------------------------------------------------------------------------





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 7 OF 13
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ITEM 1(a).  NAME OF ISSUER:

            Tremisis Engergy Acquisition Corporation (the "Company")

ITEM 1(b).  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

            1775 Broadway
            Suite 604
            New York, New York 10019

ITEMS 2(a), 2(b) and 2(c).   NAME OF PERSON FILING, ADDRESS OF PRINCIPAL
BUSINESS OFFICE AND CITIZENSHIP:

     This statement is filed by the entities and persons listed below, all of
whom together are referred to herein as the "Reporting Persons":

          (i)   North Pole Capital Master Fund (the "Fund"), a Cayman Islands
                exempted company, with respect to the Shares reported in this
                Schedule 13G directly owned by it.

          (ii)  Polar Securities Inc. ("Polar"), a company incorporated under
                the laws of Ontario, Canada, and the Investment Manager to the
                Fund with respect to the Shares reported in this Schedule 13G
                held by certain investment funds under its management.

          (iii) Paul Sabourin is the Chief Executive Officer and Chief
                Investment Officer of Polar with respect to the Shares reported
                in this Schedule 13G owned by himself directly and held by
                certain investment funds managed by Polar.

          (iv)  John Paul Cahill is a trader for Polar and exercises investment
                discretion with respect to certain investment funds managed by
                Polar with respect to the Shares reported in this Schedule 13G
                owned by himself directly and held by certain investment funds
                managed by Polar.

          (v)   Kamran Siddiqui is a portfolio manager for Polar and exercises
                investment discretion with respect to certain investment funds
                managed by Polar with respect to the Shares reported in this
                Schedule 13G owned by himself directly and held by certain
                investment funds managed by Polar.

     The citizenship of North Pole Capital Master Fund and Polar Securities Inc.
is set forth above. Paul Sabourin, John Paul Cahill and Kamran Siddiqui are all
Canadian citizens.

The address of the principal business office of North Pole Capital Master Fund
is North Pole Capital Master Fund, c/o Polar Securities Inc., 372 Bay Street,
21st floor, Toronto, Ontario M5H 2W9,





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 8 OF 13
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Canada. The address of the principal business office of Polar Securities Inc. is
372 Bay Street, 21st floor, Toronto, Ontario M5H 2W9, Canada.

ITEM 2(d).  TITLE OF CLASS OF SECURITIES: Common Stock, $0.0001 Par Value
ITEM 2(e).  CUSIP NUMBERS:    894727106
                              894727205
                              894727114

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) OR 13d-2(b) OR (c),
CHECK WHETHER THE PERSON FILING IS A:

               (a) [ ]  Broker or dealer registered under Section 15 of the Act;

               (b) [ ]  Bank as defined in Section 3(a)(6) of the Act;

               (c) [ ]  Insurance Company as defined in Section 3(a)(19) of the
                        Act;

               (d) [ ]  Investment Company registered under Section 8 of the
                        Investment Company Act of 1940;

               (e) [ ]  Investment Adviser registered under Section 203 of the
                        Investment Advisers Act of 1940: see Rule
                        13d-1(b)(1)(ii)(E);

               (f) [ ]  Employee Benefit Plan, Pension Fund which is subject to
                        the provisions of the Employee Retirement Income
                        Security Act of 1974 or Endowment Fund; see Rule
                        13d-1(b)(1)(ii)(F);

               (g) [ ]  Parent Holding Company, in accordance with Rule
                        13d-1(b)(ii)(G);

               (h) [ ]  Savings Associations as defined in Section 3(b) of the
                        Federal Deposit Insurance Act;

               (i) [ ]  Church Plan that is excluded from the definition of an
                        investment company under Section 3(c)(14) of the
                        Investment Company Act of 1940;

               (j) [ ]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

     IF THIS STATEMENT IS FILED PURSUANT TO Rule 13d-1(c), CHECK THIS BOX. [x]





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 9 OF 13
           894727205
           894727114

ITEM 4. OWNERSHIP.

      A.    North Pole Capital Master Fund

         (a) Amount beneficially owned: 0

         (b) Percent of class: 0%

         (c) Number of shares as to which such person has:

             (i)    sole power to vote or to direct the vote: 0 Shares.

             (ii)   shared power to vote or to direct the vote: 0 Shares.

             (iii)  sole power to dispose or to direct the disposition
                    of: 0 Shares.

             (iv)   shared power to dispose or to direct the disposition
                    of: 0 Shares.

      B.    Paul Sabourin

         (a) Amount beneficially owned: 0

         (b) Percent of class: 0%

         (c) Number of shares as to which such person has:

             (i)    sole power to vote or to direct the vote: 0 Shares.

             (ii)   shared power to vote or to direct the vote: 0 Shares.

             (iii)  sole power to dispose or to direct the disposition
                    of: 0 Shares.

             (iv)   shared power to dispose or to direct the disposition
                    of: 0 Shares.

      C.    John Paul Cahill

         (a) Amount beneficially owned: 0

         (b) Percent of class: 0%

         (c) Number of shares as to which such person has:

             (i)    sole power to vote or to direct the vote: 0 Shares.





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 10 OF 13
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             (ii)   shared power to vote or to direct the vote: 0 Shares.

             (iii)  sole power to dispose or to direct the disposition
                    of: 0 Shares.

             (iv)   shared power to dispose or to direct the disposition
                    of: 0 Shares.

      D.    Kamran Siddiqui

         (a) Amount beneficially owned: 0

         (b) Percent of class: 0%

         (c) Number of shares as to which such person has:

             (i)    sole power to vote or to direct the vote: 0 Shares.

             (ii)   shared power to vote or to direct the vote: 0 Shares.

             (iii)  sole power to dispose or to direct the disposition
                    of: 0 Shares.

             (iv)   shared power to dispose or to direct the disposition
                    of: 0 Shares.

      E.    Polar Securities Inc.

         (a) Amount beneficially owned: 0

         (b) Percent of class: 0%

         (c) Number of shares as to which such person has:

             (i)    sole power to vote or to direct the vote: 0 Shares.

             (ii)   shared power to vote or to direct the vote: 0 Shares.

             (iii)  sole power to dispose or to direct the disposition
                    of: 0 Shares.

             (iv)   shared power to dispose or to direct the disposition
                    of: 0 Shares.





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 11 OF 13
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ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

         This statement is being filed to report the fact that as of the date
hereof the Reporting Persons have ceased to be the beneficial owners of more
than five percent of the class of securities.

ITEM 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

         Not applicable.

ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
         SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

         Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

         See Item 4.

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP.

         Not applicable.

ITEM 10. CERTIFICATION.  (if filing pursuant to Rule 13d-1(c))

         Each of the Reporting Persons hereby makes the following certification:

         By signing below each Reporting Person certifies that, to the best of
its knowledge and belief, the securities referred to above were not acquired and
are not held for the purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not acquired and not held
in connection with or as a participant in any transaction having that purpose or
effect.





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 12 OF 13
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                                   SIGNATURES

         After reasonable inquiry and to the best of our knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct.


DATED:  January 23, 2006                 North Pole Capital Master Fund
                                           By: Polar Securities Inc.
                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin
                                           Chief Executive Officer

                                           Polar Securities Inc.
                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin
                                           Chief Executive Officer

                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin

                                           /s/ John Paul Cahill
                                           -----------------------------------
                                           John Paul Cahill

                                           /s/ Kamran Siddiqui
                                           ------------------------------------
                                           Kamran Siddiqui





Schedule 13G

CUSIP Nos. 894727106                                             PAGE 13 OF 13
           894727205
           894727114


                                    EXHIBIT 1

                           JOINT ACQUISITION STATEMENT

                            PURSUANT TO RULE 13d-1(k)

     The undersigned acknowledge and agree that the foregoing statement on
Schedule 13G, is filed on behalf of each of the undersigned and that all
subsequent amendments to this statement on Schedule 13G, shall be filed on
behalf of each of the undersigned without the necessity of filing additional
joint acquisition statements. The undersigned acknowledge that each shall be
responsible for the timely filing of such amendments, and for the completeness
and accuracy of the information concerning him or it contained therein, but
shall not be responsible for the completeness and accuracy of the information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.


DATED: January 23, 2006                  North Pole Capital Master Fund
                                           By: Polar Securities Inc.
                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin
                                           Chief Executive Officer

                                           Polar Securities Inc.
                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin
                                           Chief Executive Officer

                                           /s/ Paul Sabourin
                                           -----------------------------------
                                           Paul Sabourin

                                           /s/ John Paul Cahill
                                           -----------------------------------
                                           John Paul Cahill

                                           /s/ Kamran Siddiqui
                                           ------------------------------------
                                           Kamran Siddiqui