FORM 10-Q

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OFTHE SECURITIES EXCHANGE ACT OF 1934.

                For the quarterly period ended September 30, 1999

                         Commission file Number 0-25430

                       RIDGEWOOD ELECTRIC POWER TRUST IV
            (Exact name of registrant as specified in its charter.)

 Delaware                                 22-3324608
(State or other jurisdiction of        (I.R.S. Employer
 incorporation or organization)         Identification No.)

   947 Linwood Avenue, Ridgewood, New Jersey                07450-2939
   (Address of principal executive offices)                  (Zip Code)

               (201) 447-9000
Registrant's telephone number, including area code:

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. YES [X] NO [ ]

<PAGE>

                         PART I. - FINANCIAL INFORMATION

Item 1. Financial Statements















                        Ridgewood Electric Power Trust IV

                        Consolidated Financial Statements

                               September 30, 1999


<PAGE>


Ridgewood Electric Power Trust IV
Consolidated Balance Sheet
--------------------------------------------------------------------------------

                                                September 30,   December 31,
                                                   1999             1998
                                                ------------    ------------
                                                 (unaudited)
Assets:

Cash and cash equivalents ...................   $    666,692    $  2,021,168
Accounts receivable, trade ..................      1,170,381         617,973
Due from affiliates .........................        133,933         377,710
Other assets ................................        138,355          57,975
                                                ------------    ------------
  Total current assets ......................      2,109,361       3,074,826
                                                ------------    ------------

Investments:
Maine Hydro Projects ........................      6,277,163       6,217,289
Maine Biomass Projects ......................      5,865,602       6,306,818
Santee River Rubber .........................      4,264,512       4,501,357
Electric power equipment held for resale ....        455,182         455,182

Plant and equipment .........................     16,761,288      16,359,211
Accumulated depreciation ....................     (2,765,634)     (2,073,744)
                                                ------------    ------------
                                                  13,995,654      14,285,467
                                                ------------    ------------

Electric power sales contract ...............      8,338,040       8,338,040
Accumulated amortization ....................     (1,918,979)     (1,502,081)
                                                ------------    ------------
                                                   6,419,061       6,835,959
                                                ------------    ------------

Spare parts inventory .......................        746,178         746,178
Debt reserve fund ...........................        657,987         637,108
                                                ------------    ------------
  Total assets ..............................   $ 40,790,700    $ 43,060,184
                                                ------------    ------------

Liabilities and Shareholders' Equity:

Liabilities:
Current maturities of long-term debt ........   $    700,058    $    651,613
Accounts payable and accrued expenses .......        447,622         563,685
Due to affiliates ...........................        695,053         441,614
                                                ------------    ------------
  Total current liabilities .................      1,842,733       1,656,912

Long-term debt, less current portion ........      3,665,186       4,196,455
Minority interest in the Providence Project .      5,988,840       6,202,894

Commitments and contingencies

Shareholders' equity:
Shareholders' equity (476.8 shares issued and
    outstanding) ............................     29,406,067      31,098,950
Managing shareholder's accumulated deficit ..       (112,126)        (95,027)
                                                ------------    ------------
  Total shareholders' equity ................     29,293,941      31,003,923
                                                ------------    ------------

  Total liabilities and shareholders' equity    $ 40,790,700    $ 43,060,184
                                                ------------    ------------


          See accompanying notes to consolidated financial statements.


<PAGE>



Ridgewood Electric Power Trust IV
Consolidated Statement of Operations (unaudited)
--------------------------------------------------------------------------------

                             Nine Months Ended          Three Months Ended
                       --------------------------    --------------------------
                             September 30,                 September 30,
                          1999           1998          1999            1998
                       -----------    -----------    -----------    -----------

Net sales ..........   $ 5,325,510    $ 5,123,329    $ 1,838,601    $ 1,692,142
Sublease income ....       276,750        276,750         92,250         92,250
                       -----------    -----------    -----------    -----------
  Total revenues ...     5,602,260      5,400,079      1,930,851      1,784,392

Cost of sales ......     4,608,550      3,618,948      1,522,499      1,208,045
                       -----------    -----------    -----------    -----------

Gross profit .......       993,710      1,781,131        408,352        576,347

General and
 administrative
 expenses ..........       503,598        502,766        152,149        160,971
Management fee .....       350,451        840,213        116,817        280,071
Project due
 diligence costs ...          --          230,809           --          211,640
Other expenses .....        15,036         10,983         10,256          8,055
                       -----------    -----------    -----------    -----------
Total other
 operating expenses        869,085      1,584,771        279,222        660,737
                       -----------    -----------    -----------    -----------

Income (loss) from
 operations ........       124,625        196,360        129,130        (84,390)
                       -----------    -----------    -----------    -----------

Other income
 (expense):
Interest income ....       142,450        329,150         96,874         52,896
Interest expense ...      (333,816)      (377,844)      (107,410)      (122,438)
Income (loss) from
 Maine Hydro
 Projects ..........       459,874        583,737       (194,787)      (103,803)
Loss from Maine
 Biomass Projects ..      (666,216)      (434,502)      (255,719)      (123,469)
Income from Santee
 River Rubber ......       104,583           --           40,748           --
                       -----------    -----------    -----------    -----------
  Net other income
 (loss) ............      (293,125)       100,541       (420,294)      (296,814)
                       -----------    -----------    -----------    -----------

Income (loss) before
 minority interest .      (168,500)       296,901       (291,164)      (381,204)

Minority interest
 in the earnings of
 the Providence
 Project ...........      (144,443)      (359,212)       (60,991)      (109,141)
                       -----------    -----------    -----------    -----------

Net income (loss) ..   $  (312,943)   $   (62,311)   $  (352,155)   $  (490,345)
                       -----------    -----------    -----------    -----------

        See accompanying notes to the consolidated financial statements.


<PAGE>



Ridgewood Electric Power Trust IV
Consolidated Statement of Changes in Shareholders' Equity (unaudited)
--------------------------------------------------------------------------------


                                           Managing
                         Shareholders     Shareholder      Total
                         ------------    ------------   ------------


Shareholders' equity,
 December 31, 1998 ..   $ 31,098,950    $    (95,027)   $ 31,003,923

Cash distributions ..     (1,383,069)        (13,970)     (1,397,039)

Net loss for the
 period .............       (309,814)         (3,129)       (312,943)
                        ------------    ------------    ------------
Shareholders' equity,
 September 30, 1999 .   $ 29,406,067    $   (112,126)   $ 29,293,941
                        ------------    ------------    ------------



































          See accompanying notes to consolidated financial statements.

<PAGE>



Ridgewood Electric Power Trust IV
Consolidated Statement of Cash Flows (unaudited)
--------------------------------------------------------------------------------

                                                     Nine Months Ended
                                                ----------------------------
                                               September 30,    September 30,
                                                     1999          1998
                                                ------------    ------------
Cash flows from operating activities:
Net loss ....................................   $   (312,943)   $    (62,311)
                                                ------------    ------------

Adjustments  to  reconcile  net
 loss  to net  cash  flows  from
 operating activities:
 Depreciation and amortization ..............      1,108,788         950,626
 Minority interest in earnings of
  the Providence Project ....................        144,443         359,212
 Loss from unconsolidated Maine
  Hydro Projects ............................       (459,874)       (583,737)
 Loss from unconsolidated Maine
  Biomass Projects ..........................        666,216         434,502
 Income from unconsolidated Santee
  River Rubber ..............................       (104,583)           --
 Changes in assets and liabilities:
 Increase in accounts receivable,
  trade .....................................       (552,408)       (459,911)
 Decrease (increase) in due from
  affiliates ................................        243,777         (34,770)
 Increase in other assets ...................        (80,380)        (68,641)
 Decrease in accounts payable and
  accrued expenses ..........................       (116,063)        (10,083)
 Increase (decrease) in due to
  affiliates ................................        253,439        (244,128)
                                                ------------    ------------
    Total adjustments .......................      1,103,355         343,070
                                                ------------    ------------
    Net cash provided by operating activities        790,412         280,759
                                                ------------    ------------

Cash flows from investing activities:
Investment in Santee River Project ..........           --        (4,469,650)
Loans to Maine Biomass Projects .............       (225,000)       (250,000)
Distributions from Maine Hydro Projects .....        400,000         299,999
Distributions from Santee River Rubber ......        341,428            --
Capital expenditures ........................       (402,077)     (1,460,541)
Deferred due diligence costs ................           --            27,159
                                                ------------    ------------
    Net cash provided by (used in)
     investing activities ...................        114,351      (5,853,033)
                                                ------------    ------------

Cash flows from financing activities:
Cash distributions to shareholders ..........     (1,397,039)     (2,694,924)
Payments to reduce long-term debt ...........       (482,824)       (438,794)
Increase in debt reserve fund ...............        (20,879)           --
Distribution to minority interest ...........       (358,497)       (532,102)
                                                ------------    ------------
    Net cash used in financing activities ...     (2,259,239)     (3,665,820)
                                                ------------    ------------

Net decrease in cash and cash equivalents ...     (1,354,476)     (9,238,094)

Cash and cash equivalents, beginning of year       2,021,168      11,086,281
                                                ------------    ------------

Cash and cash equivalents, end of period ....   $    666,692    $  1,848,187
                                                ------------    ------------






          See accompanying notes to consolidated financial statements.


<PAGE>



Ridgewood Electric Power Trust IV
Notes to Consolidated Financial Statements (unaudited)

1. General

In the opinion of management,  the accompanying  unaudited financial  statements
contain  all  adjustments,   which  consist  of  normal  recurring  adjustments,
necessary  for the pair  presentation  of the results  for the interim  periods.
Additional footnote disclosure  concerning accounting policies and other matters
are  disclosed  in  Ridgewood  Electric  Power Trust IV's  financial  statements
included  in the 1998  Annual  Report  on Form  10-K,  which  should  be read in
conjunction with these financial statements. The year-end balance sheet data was
derived from audited financial statements,  but does not include all disclosures
required by generally accepted accounting principles. Certain prior year amounts
have been reclassified to conform to the current year presentation.

The results of operations for an interim period should not  necessarily be taken
as  indicative  of the results of  operations  that may be expected for a twelve
month period.

2.  Maine Biomass Projects

In the first six months of 1999,  the Trust  loaned an  additional  $225,000  to
Indeck Maine Energy,  L.L.C. ("Maine Biomass Projects").  At September 30, 1999,
the total amount loaned by the Trust was $600,000 and is recorded as an increase
to the trust's investment in the Maine Biomass Projects. The loan is in the form
of demand notes that bear  interest at 5% per annum.  Ridgewood  Electric  Power
Trust V, which owns an  identical  preferred  membership  interest  in the Maine
Biomass Projects,  also made identical loans to the Maine Biomass Projects.  The
other Maine Biomass Project members also loaned $450,000 in the first six months
of 1999 to the Maine Biomass Projects with the same terms.

The Maine  Biomass  Projects  were  operated  by  Indeck  Operations,  Inc.,  an
affiliate of the members of the Maine Biomass  Projects.  The annual  operator's
fee is  $300,000,  of which  $200,000  is  payable  contingent  upon the  Trusts
receiving their cumulative annual return. The management agreement had a term of
one year and  automatically  continued  for  successive  one year terms,  unless
canceled by either the Maine  Biomass  Projects or Indeck  Operations,  Inc. The
Maine Biomass Projects  exercised their right to terminate the contract of March
1, 1999 because certain  preferred  membership  interest  payments have not been
made.  Under an Operating  Agreement with the Trust,  Ridgewood Power Management
LLC  ("Ridgewood  Management"),  an entity  related to the managing  shareholder
through common  ownership,  will provide  management,  purchasing,  engineering,
planning and  administrative  services to the Maine Biomass Projects.  Ridgewood
Management  charges  the  projects  at its cost for these  services  and for the
allocable  amount of certain  overhead  items.  Allocations  of costs are on the
basis of  identifiable  direct  costs,  time records or in proportion to amounts
invested in projects

3.  Providence EPA Matter

In June 1999,  Ridgewood  Providence Power Partners,  L.P.  ("RPPP"),  a limited
partnership through which the Trust owns its limited partnership interest in the
Providence Project, settled the administrative  proceeding brought by the Region
I office of the U.S.  Environmental  Protection Agency ("EPA") for approximately
$86,000. As previously  disclosed the charges related to alleged  recordkeeping,
training  documentation  and tank labeling  violations and did not relate to any
discharge of pollutants or direct danger to the environment.

4.       Summary Results of Operations for Selected Investments

Summary results of operations for the Maine Hydro projects,  which are accounted
for under the equity method, were as follows:

                             Nine months ended September 30,
                                    1999          1998
Total revenue ...............   $3,195,185   $3,580,482
Depreciation and amortization      829,079      817,200
Income from operations ......      973,485    1,141,168
Net income ..................      919,748    1,167,472

Summary  results  of  operations  for the  Maine  Biomass  projects,  which  are
accounted for under the equity method, were as follows:

                             Nine months ended September 30,
                                     1999          1998
Total revenue ...............   $   925,326    $ 1,198,098
Depreciation and amortization       135,623        135,623
Loss from operations ........    (1,260,333)      (837,629)
Net loss ....................    (1,332,431)      (869,004)

Summary  results of  operations  for the Santee River Rubber  project,  which is
accounted for under the equity method, were as follows:

                            Nine months ended September 30, 1999
Total revenue ...............   $      --
Depreciation and amortization          --
Net loss ....................    (1,080,000)

<PAGE>

Item 2. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

Dollar amounts in this discussion are generally rounded to the nearest $1,000.

Introduction

The consolidated  financial statements include the accounts of the Trust and the
limited  partnerships  owning the Providence  Project and the California Pumping
project.  The Trust uses the equity method of accounting for its  investments in
the Maine Hydro Projects, the Maine Biomass Projects and the Santee River Rubber
Project, which are owned 50% or less by the Trust.

Results of Operations

In the third quarter of 1999, the Trust had total revenue of  $1,931,000,  which
is comparable with total revenue of $1,784,000 in the same period in 1998. Total
revenues for the first nine months of 1999 of  $5,602,000  were also  comparable
with  total  revenue of  $5,400,000  in the same  period in 1998.  Cost of sales
increased to $1,522,000 in the third  quarter of 1999  ($4,609,000  in the first
nine months of 1999) from  $1,208,000 in the same period in 1998  ($3,619,000 in
the first nine months of 1998) as a result of higher engine maintenance costs at
the Providence  Project. A portion of the increase in maintenance costs resulted
from an engine failure in the first quarter of 1999.

General and  administrative  expenses  in the third  quarter of 1999 of $152,000
were comparable with the $161,000  recorded in the same period in 1998.  General
and  administrative  expenses for the first nine months of 1999 of $504,000 were
comparable with the $503,000 recorded in the same period in 1998. The management
fee decreased  from $280,000 in the third quarter of 1998 ($840,000 in the first
nine months of 1998) to $117,000  in the same  period in 1999  ($350,000  in the
first nine months of 1999) as a result of the Managing Shareholder's decision to
voluntarily waive one-half of its management fee. The Managing  Shareholder will
resume taking the full fee in the fourth quarter of 1999.

Interest  income  declined by $187,000 from $329,000 in the first nine months of
1998 to  $142,000  in the same  period  of 1999 due to the  lower  average  cash
balances.  Interest  expense was reduced from  $122,000 in the third  quarter of
1998  ($378,000  for the first  nine  months of 1998) to  $107,000  in the third
quarter  of 1999  ($334,000  for the  first  nine  months  of 1999) due to lower
borrowings outstanding at the Providence Project.

The equity loss from the Maine Hydro  Projects  increased  from  $104,000 in the
third  quarter  of 1998 to  $195,000  in the  same  period  in 1999 due to lower
production because of below-average  river flows. The below-average  river flows
also reduced  equity income for the first nine months of 1999  ($460,000 for the
first nine  months of 1999  compared  to  $584,000  for the first nine months of
1998).

The  equity  loss from the  shut-down  Maine  Biomass  Projects  increased  from
$123,000  in the third  quarter of 1998  ($435,000  for the first nine months of
1998) to  $256,000  in the third  quarter of 1999  ($666,000  for the first nine
months of 1999) due to lower revenues from the sale of installed capacity at the
plants  and  additional  costs  incurred  to  prepare  the  plants  for  limited
operations.

The Trust  recorded  income from its equity  interest in the Santee River Rubber
project of $41,000 and  $105,000  in the third  quarter and first nine months of
1999, respectively.  The Trust acquired its investment in Santee River Rubber in
the third quarter of 1998.  The Santee River Rubber project is expected to begin
operations in the last quarter of 1999.

The decrease in the minority interest in the earnings of the Providence  Project
from $109,000 in the third  quarter of 1998  ($359,000 for the first nine months
of 1998) to $61,000 in the second  quarter of 1999  ($144,000 for the first nine
months of 1999) is a result of lower earnings from the Providence Project caused
primarily by higher maintenance costs.

Liquidity and Capital Resources

In 1997,  the Trust and Fleet Bank,  N.A. (the "Bank")  entered into a revolving
line of credit agreement,  whereby the Bank provides a three year committed line
of credit  facility of $1,150,000.  Outstanding  borrowings bear interest at the
Bank's  prime rate or, at the  Trust's  choice,  at LIBOR plus 2.5%.  The credit
agreement  requires  the Trust to maintain a ratio of total debt to tangible net
worth of no more than 1 to 1 and a minimum debt service  coverage  ratio of 2 to
1. The credit facility was obtained in order to allow the Trust to operate using
a minimum amount of cash,  maximize the amount invested in Projects and maximize
cash distributions to shareholders. There have been no borrowings under the line
of credit in 1999.

The Managing Shareholder  announced a change of distribution policy in May 1999.
Distributions  to  Investors  from the  Trust,  which had been made on a monthly
basis,  are now made on a  quarterly  basis in  order to  reduce  administrative
burdens.

In addition,  the Managing Shareholder reduced the Trust's distribution rate per
share to $1,000 per quarter,  equal to a 4% distribution rate per year. The rate
paid in 1998 was 6% per year.  The  reduction  is  expected to continue at least
into early 2000. The Managing  Shareholder also has voluntarily  waived one-half
of its management  fee  (approximately  $39,000 per month)  beginning in January
1999. The Managing  Shareholder  was not obligated to continue the waiver and it
ended in the fourth quarter of 1999. The Trust anticipates that the Santee River
and Maine Biomass plants will begin to make  significant  contributions  to cash
flow in mid- to-late 2000,  which might permit an increase in  distributions  at
that time.  However,  the Trust cannot  assure that these  results will occur or
that the distribution rate will be maintained or increased.

Other  than  investments  of  available  cash  in  power  generation   Projects,
obligations of the Trust are generally  limited to payment of Project  operating
expenses, payment of a management fee to the Managing Shareholder,  payments for
certain  accounting  and legal  services to third persons and  distributions  to
shareholders  of  available   operating  cash  flow  generated  by  the  Trust's
investments.  The Trust's  policy is to distribute as much cash as is prudent to
shareholders.  Accordingly,  the Trust has not  found it  necessary  to retain a
material amount of working  capital.  The amount of working capital  retained is
further reduced by the availability of the line of credit facility.

The  Trust  anticipates  that,  during  1999,  its cash  flow  from  operations,
unexpended  offering  proceeds and line of credit  facility  will be adequate to
fund its obligations.

Year 2000 remediation

Please refer to the Trust's  disclosures  in its Annual  Report on Form 10-K for
the year ended  December  31, 1998,  at "Item 7 -  Management's  Discussion  and
Analysis," for a discussion of year 2000 issues  affecting the Trust. In October
1999, the Managing Shareholder completed its year 2000 remediation program after
having  successfully  tested  and  implemented  all  necessary  changes  to  its
software,   including  the  subscription/investor   relations  systems  and  all
subsystems  used for preparing  internal  reports.  Costs of remediation did not
materially exceed the estimated amounts.

The Trust's projects have been reviewed by an outside consultant or by personnel
from RPMCo, who determined that the project's  electronic control systems do not
contain  software  affected by the Year 2000 problem and do not contain embedded
components that contain Year 2000 flaws.

No other  material  changes  to the risks to the Trust  described  in its Annual
Report  on  Form  10-K  have  occurred.   The  reasonable  worst  case  scenario
anticipated by the Trust continues to be that its electric generating facilities
will be able to operate on and after  January 1, 2000 but that there may be some
short-term  inability of their  customers to pay  promptly.  In that event,  the
Trust's revenues could be materially reduced for a temporary period and it might
have to draw upon its credit line to fund  operating  expenses until the utility
makes up any payment arrears.


<PAGE>



                          PART II - OTHER INFORMATION

Item 5. Other Information

Mr.  Swanson  has  transferred  54%  of the  equity  interest  in  the  Managing
Shareholder to family trusts.  He has sole dispositive and voting power over the
equity interest  transferred to each trust and  accordingly  continues to be the
beneficial  owner as defined in Rule 13d-3 of all of the equity  interest in the
Managing Shareholder.


<PAGE>


                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  cause  this  report  to be  signed  on its  behalf  by the
undersigned thereunto duly authorized.




                        RIDGEWOOD ELECTRIC POWER TRUST IV
                                   Registrant


November 11, 1999               By /s/ Martin V. Quinn
Date                            Martin V. Quinn
                                Senior  Vice   President  and  Chief   Financial
                                Officer (signing on behalf of the Registrant and
                                as principal financial officer)