<ARTICLE> 5  
<LEGEND>  
This schedule contains summary financial information extracted from the 
Registrant's unaudited interim financial statements for the nine months 
ended September 30, 1998 and is qualified in its entirety by reference to 
those financial statements.  
</LEGEND>  
<CIK> 0000930364  
<NAME> RIDGEWOOD ELECTRIC POWER TRUST IV  
         
                                         
<PERIOD-TYPE>                              9-MOS  
<FISCAL-YEAR-END>                          DEC-31-1998  
<PERIOD-END>                               SEP-30-1998
<CASH>                                       1,848,187
<SECURITIES>                                17,881,574<F1>  
<RECEIVABLES>                                1,316,434<F2>  
<ALLOWANCES>                                         0  
<INVENTORY>                                          0  
<CURRENT-ASSETS>                             3,617,072
<PP&E>                                      16,410,276
<DEPRECIATION>                              (1,606,131)  
<TOTAL-ASSETS>                              44,341,693 
<CURRENT-LIABILITIES>                        1,424,796  
<BONDS>                                      4,365,245  
<COMMON>                                             0  
<PREFERRED-MANDATORY>                                0  
<PREFERRED>                                          0  
<OTHER-SE>                                  32,266,126<F4>  
<TOTAL-LIABILITY-AND-EQUITY>                44,341,693  
<SALES>                                              0  
<TOTAL-REVENUES>                             5,400,079  
<CGS>                                        3,618,948  
<TOTAL-COSTS>                                3,618,948  
<OTHER-EXPENSES>                             1,584,771  
<LOSS-PROVISION>                                     0  
<INTEREST-EXPENSE>                             377,844  
<INCOME-PRETAX>                                (62,311)<F3> 
<INCOME-TAX>                                         0  
<INCOME-CONTINUING>                            (62,311)
<DISCONTINUED>                                       0  
<EXTRAORDINARY>                                      0  
<CHANGES>                                            0  
<NET-INCOME>                                   (62,311)  
<EPS-PRIMARY>                                     (131)
 <EPS-DILUTED>                                    (131)
  
<FN>  
<F1>Investment in hydroelectric project and Biomass project
accounted for on equity method in financial statements.  
<F2>Includes $199,306 due from affiliates.
<F3>After deduction of minority interest in Providence Project
earnings of $359,212.
<F4>Shareholders' equity of $32,348,532 less managing share-
holders' accumulated deficit 
</FN>