EXHIBIT 10.25

                          SMART ENERGY SOLUTIONS, INC.


The  undersigned,  agrees that he, she or it will not,  directly or  indirectly,
issue,  offer, agree or offer to sell, sell, grant an option for the purchase or
sale of, transfer, pledge, assign, hypothecate, distribute or otherwise encumber
or dispose  (collectively,  "Sell" or "Sold") of any securities referenced below
of the Smart Energy Solutions,  Inc.,  formerly known as Datigen.com,  Inc. (the
"Company"),  including options, rights, warrants or other securities underlying,
convertible  into,  exchangeable  or exercisable  for or evidencing any right to
purchase or subscribe for any common stock (whether or not beneficially owned by
the  undersigned),  or  any  beneficial  interest  therein  (collectively,   the
"Securities"), except as follows:

      1.    After April 2006, 20% of the Securities referenced below held by the
            undersigned can be Sold;

      2.    After April 2007, 30% of the Securities referenced below held by the
            undersigned can be Sold; and

      3.    After April 2008, the balance thereof.

Notwithstanding  the foregoing,  the  undersigned  shall be entitled to Sell the
Securities as long as the transaction does not involve the Securities being Sold
on the  Over-the-Counter  Bulletin  Board (or any other exchange or medium where
the securities of the Company are listed or quoted), provided, however, that any
transferee of the  Securities,  including  without  limitation,  a person who is
gifted the Securities or lends against the Securities, shall agree in writing to
the restrictions  contained herein prior to and as a condition to the Securities
being Sold.

In order to enable the  aforesaid  covenants  to be  enforced,  the  undersigned
hereby consents to the placing of legends and/or  stop-transfer  orders with the
transfer agent of the Company's securities with respect to any of the Securities
registered  in  the  name  of  the  undersigned  or  beneficially  owned  by the
undersigned.



Dated: ____ __, 2006



                                Name: ____________________________

                                Certificate Nos.: ________________


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