<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM ACTIVE
POWER'S BALANCE SHEETS AND STATEMENT OF OPERATIONS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                     134,732,216
<SECURITIES>                                17,020,807
<RECEIVABLES>                                  918,027
<ALLOWANCES>                                         0
<INVENTORY>                                  2,015,678
<CURRENT-ASSETS>                           150,712,157
<PP&E>                                       5,821,030
<DEPRECIATION>                             (1,886,967)
<TOTAL-ASSETS>                             159,651,908
<CURRENT-LIABILITIES>                        2,470,742
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        38,812
<OTHER-SE>                                 157,142,355
<TOTAL-LIABILITY-AND-EQUITY>               159,651,908
<SALES>                                      2,204,363
<TOTAL-REVENUES>                             2,204,363
<CGS>                                                0
<TOTAL-COSTS>                                3,782,165
<OTHER-EXPENSES>                            15,877,282
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,701
<INCOME-PRETAX>                           (16,854,188)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (16,854,188)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (16,854,188)
<EPS-BASIC>                                     (2.18)
<EPS-DILUTED>                                   (2.18)