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                                                                     Exhibit 4.2

                        SPECIMEN COMMON STOCK CERTIFICATE

NUMBER: ______________________             SHARES: _________________________-C

                        ENERGY SERVICES ACQUISITION CORP.

              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

                                  COMMON STOCK

                                                      SEE REVERSE FOR CERTAIN
                                                      DEFINITIONS THIS CERTIFIES
THAT __________________________                       CUSIP: ______________

IS THE OWNER OF

      FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $0.0001 EACH
                             OF THE COMMON STOCK OF

                        ENERGY SERVICES ACQUISITION CORP.

transferable on the books of the Corporation in person or by duly authorized
attorney upon surrender of this certificate properly endorsed. This certificate
is not valid unless countersigned by the Transfer Agent and registered by the
Registrar. Witness the seal of the Corporation and the facsimile signatures of
its duly authorized officers.

Dated:
       ------------------------------


-------------------------------------   ----------------------------------------
Chief Executive Officer                 Secretary

                        ENERGY SERVICES ACQUISITION CORP.
                                 CORPORATE SEAL
                                      2006
                                    DELAWARE

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

     "TEN COM"- as tenants in common

     "TEN ENT"- as tenants by the entireties

     "JT TEN"- as joint tenants with right of survivorship and not as tenants in
common

     "UNIF GIFT MIN ACT"- ______________ Custodian ________________
                          (Cust)                   (Minor)

         under Uniform Gifts to Minors Act ________________(State)

     Additional Abbreviations may also be used though not in the above list.

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                        ENERGY SERVICES ACQUISITION CORP.

     The Corporation will furnish without charge to each stockholder who so
requests the powers, designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof of the
Corporation and the qualifications, limitations, or restrictions of such
preferences and/or rights. This certificate and the shares represented thereby
are issued and shall be held subject to all the provisions of the Certificate of
Incorporation and all amendments thereto and resolutions of the Board of
Directors providing for the issue of shares of Preferred Stock (copies of which
may be obtained from the secretary of the Corporation), to all of which the
holder of this certificate by acceptance hereof assents.

     For value received, _________________ hereby sell, assign and transfer unto

________________________________________________________________________________
  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________
     (PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE)

____________ shares of the capital stock represented by the within Certificate,
and do hereby irrevocably constitute and appoint

____________ Attorney to transfer the said stock on the books of the within
named Corporation with full power of substitution in the premises.

Dated
      -------------
                                        ----------------------------------------
                                        NOTICE: The signature to this assignment
                                        must correspond with the name as written
                                        upon the face of the certificate in
                                        every particular, without alteration or
                                        enlargement or any change whatever.



Signature(s) Guaranteed:


----------------------------------------------------------------------------
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO
S.E.C. RULE 17Ad-15).

The holder of this certificate shall be entitled to receive funds from the trust
fund only in the event of the Corporation's liquidation or if the holder seeks
to convert his respective shares into cash upon a business combination which he
voted against and which is actually completed by the Corporation. In no other
circumstances shall the holder have any right or interest of any kind in or to
the trust fund.


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