<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CLEAN
ENERGY COMBUSTION SYSTEMS, INC.'S CONSOLIDATED BALANCE SHEET AT MARCH 31, 2000,
AND CLEAN ENERGY COMBUSTION SYSTEMS, INC.'S CONSOLIDATED STATEMENT OF LOSS FOR
THE THREE-MONTH PERIOD ENDED MARCH 31, 2000, AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> MAR-31-2000
<CASH> 4,506
<SECURITIES> 0
<RECEIVABLES> 13,898
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 51,458
<PP&E> 73,070
<DEPRECIATION> 14,619
<TOTAL-ASSETS> 147,436
<CURRENT-LIABILITIES> 469,197
<BONDS> 0
0
251
<COMMON> 964
<OTHER-SE> 0
<TOTAL-LIABILITY-AND-EQUITY> 147,436
<SALES> 0
<TOTAL-REVENUES> 0
<CGS> 0
<TOTAL-COSTS> (21,434)
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 7,272
<INCOME-PRETAX> (186,359)
<INCOME-TAX> 0
<INCOME-CONTINUING> (186,359)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (186,359)
<EPS-BASIC> (0.02)
<EPS-DILUTED> (0.02)
</TABLE>