<ARTICLE> 5  
<LEGEND>  
This schedule contains summary financial information 
extracted from the Registrant's unaudited interim financial 
statements for the six months ended June 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>                              6-MOS  
<FISCAL-YEAR-END>                          DEC-31-1998  
<PERIOD-END>                               JUN-30-1998
<CASH>                                       7,096,878
<SECURITIES>                                13,939,195<F1>  
<RECEIVABLES>                                1,199,243<F2>  
<ALLOWANCES>                                         0  
<INVENTORY>                                          0  
<CURRENT-ASSETS>                             8,734,769
<PP&E>                                      15,974,250  
<DEPRECIATION>                              (1,389,840)  
<TOTAL-ASSETS>                              45,714,229 
<CURRENT-LIABILITIES>                        1,252,164  
<BONDS>                                      4,530,049  
<COMMON>                                             0  
<PREFERRED-MANDATORY>                                0  
<PREFERRED>                                          0  
<OTHER-SE>                                  33,565,981  
<TOTAL-LIABILITY-AND-EQUITY>                45,714,299  
<SALES>                                              0  
<TOTAL-REVENUES>                             3,615,687  
<CGS>                                        2,410,903  
<TOTAL-COSTS>                                2,410,903  
<OTHER-EXPENSES>                               931,128  
<LOSS-PROVISION>                                     0  
<INTEREST-EXPENSE>                             255,406  
<INCOME-PRETAX>                                420,940<F3> 
<INCOME-TAX>                                         0  
<INCOME-CONTINUING>                            420,940
<DISCONTINUED>                                       0  
<EXTRAORDINARY>                                      0  
<CHANGES>                                            0  
<NET-INCOME>                                   420,940  
<EPS-PRIMARY>                                      883
 <EPS-DILUTED>                                     883
  
<FN>  
<F1>Investment in hydroelectric project and Biomass project
accounted for on equity method in financial statements.  
<F2>Includes $85,950 due from affiliates.
<F3>After deduction of minority interest in Providence 
Project earnings of $250,071.
</FN>