<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED FINANCIAL STATEMENTS OF ENVIRONMENTAL POWER CORPORATION AS OF
DECEMBER 31, 1999
</LEGEND>

                             
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                         605,678<F1>
<SECURITIES>                                         0
<RECEIVABLES>                                3,703,922
<ALLOWANCES>                                         0
<INVENTORY>                                    532,585
<CURRENT-ASSETS>                             4,955,452
<PP&E>                                       1,076,716
<DEPRECIATION>                                 297,852
<TOTAL-ASSETS>                              58,782,002
<CURRENT-LIABILITIES>                        7,617,627
<BONDS>                                      2,394,237
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                        100
<COMMON>                                       125,254
<OTHER-SE>                                  (5,596,123)
<TOTAL-LIABILITY-AND-EQUITY>                58,782,002
<SALES>                                     48,268,311
<TOTAL-REVENUES>                            48,268,311
<CGS>                                       21,931,318
<TOTAL-COSTS>                               21,931,318
<OTHER-EXPENSES>                            23,110,677
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             375,176
<INCOME-PRETAX>                              1,059,125
<INCOME-TAX>                                   470,552
<INCOME-CONTINUING>                            588,573
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                    1,188,989
<NET-INCOME>                                 1,777,562
<EPS-BASIC>                                        .16
<EPS-DILUTED>                                      .16