<ARTICLE> 5  
<LEGEND>  
This  schedule  contains  summary  financial   information  extracted  from  the
Registrant's  unaudited interim financial statements for the quarter ended March
31, 1999 and is  qualified  in its  entirety  by  reference  to those  financial
statements.
</LEGEND>  
<CIK> 0000930364  
<NAME> RIDGEWOOD ELECTRIC POWER TRUST IV  
         
                               
<PERIOD-TYPE>                                    3-MOS  
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-END>                               MAR-31-1999
<CASH>                                       1,155,439
<SECURITIES>                                17,382,513<F1>
<RECEIVABLES>                                  579,613
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            19,184,850<F2>
<PP&E>                                      16,473,238
<DEPRECIATION>                              (2,304,375)
<TOTAL-ASSETS>                              41,897,151
<CURRENT-LIABILITIES>                        1,260,745<F3>
<BONDS>                                      4,039,345
<COMMON>                                             0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<OTHER-SE>                                  30,458,176<F4>  
<TOTAL-LIABILITY-AND-EQUITY>                41,897,151
<SALES>                                      1,701,399  
<TOTAL-REVENUES>                             1,793,649  
<CGS>                                        1,521,989  
<TOTAL-COSTS>                                1,521,989  
<OTHER-EXPENSES>                               299,448
<LOSS-PROVISION>                                     0  
<INTEREST-EXPENSE>                                   0  
<INCOME-PRETAX>                                269,769<F5>  
<INCOME-TAX>                                         0  
<INCOME-CONTINUING>                            269,769<F5> 
<DISCONTINUED>                                       0  
<EXTRAORDINARY>                                      0  
<CHANGES>                                            0  
<NET-INCOME>                                   269,769<F5> 
<EPS-PRIMARY>                                      566
<EPS-DILUTED>                                      566

<FN>  
<F1>Investment  in  hydroelectric  project,  Santee  River  project  and Biomass
project accounted for on equity method in financial statements.
<F2>Includes $12,766 due from affiliates.
<F3>Includes $176,613 due to affiliates.          . 
<F4>Shareholders' equity of $30,558,660 less managing share-
holders' accumulated deficit of $100,484.  
<F5>After deduction of minority interest in Providence Project
earnings of $65,303.  
</FN>