UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2010
For the quarterly period ended March 31, 2011
or
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _____ to _____

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 Incorporation or Organization)		(I.R.S. Employer Identification No.)

1314 King Street, Wilmington, DE		19801
(Address of Principal Executive Offices)		(Zip Code)

(302) 888-7444

(Registrant’s Telephone Number, Including Area Code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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 þ No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes o No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer o	Accelerated filer o	Non-accelerated filer o	Smaller reporting company þ
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No þ

As of ~~October~~March 31, ~~2010~~2011, there were 476.8 Investor Shares outstanding.

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FORM 10-Q

FORM 10-Q

TABLE OF CONTENTS


PART I.	FINANCIAL INFORMATION	Page

Item 1.	Financial Statements	1

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	7

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	8

Item 4.	Controls and Procedures	8

PART II.	OTHER INFORMATION

Item 1.	Legal Proceedings	9

Item 1A.	Risk Factors	9

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	9

Item 3.	Defaults Upon Senior Securities	9

Item 4.	Reserved	9

Item 5.	Other Information	9

Item 6.	Exhibits	9

SIGNATURE		10

TABLE OF CONTENTS

PART I.	FINANCIAL INFORMATION	Page
Item 1.	Financial Statements	1
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	7
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	9
Item 4.	Controls and Procedures	9
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	9
Item 1A.	Risk Factors	9
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	9
Item 3.	Defaults Upon Senior Securities	9
Item 4.	Reserved	9
Item 5.	Other Information	9
Item 6.	Exhibits	10
SIGNATURE		11

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PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

RIDGEWOOD ELECTRIC POWER TRUST IV
CONDENSED CONSOLIDATED BALANCE SHEETS
CONDENSED CONSOLIDATED STATEMENTS OF NET ASSETS
(in thousands, except share data)
(Liquidation Basis)
	September 30,			December 31,
(in thousands)
	2010			2009
	March 31,			December 31,
	2011			2010
	(unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	~~7,146~~736		$	71,~~804~~121
Due from affiliates		684			606
Buyer holdback receivable		972			972
Prepaid expenses and other current assets		26			24
Total assets	$	1,708		$	2,093
Total current assets		7,856			8,434
LIABILITIES AND NET ASSETS
Investment		549			2,001
Total assets	$	8,405		$	10,435
LIABILITIES AND SHAREHOLDERS’ EQUITY (DEFICIT)
Current liabilities:
Accounts payable and accrued expenses	$	2436		$	98715
Due to affiliates		6930			-136
Total liabilities	$	71466		$	98851
Commitments and contingencies
Net assets in liquidation	$	1,242		$	1,242
Shareholders’ equity (deficit):
Shareholders’ equity (476.8 Investor Shares
issued and outstanding)		8,519			10,502
Managing Shareholder’s accumulated deficit
(1 management share issued and outstanding)		(185	)		(165	)
Total shareholders’ equity		8,334			10,337
Total liabilities and shareholders’ equity	$	8,405		$	10,435

The accompanying notes are an integral part of these condensed consolidated financial statements.

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RIDGEWOOD ELECTRIC POWER TRUST IV
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN NET ASSETS
(unaudited, in thousands, except per share data)
FOR THE THREE MONTHS ENDED MARCH 31, 2011
	Nine Months Ended September 30,						Three Months Ended September 30,
(Liquidation Basis)
	2010			2009			2010			2009
(unaudited, in thousands)
Operating expenses:
Net assets in liquidation at December 31, 2010	$	1,242
General and administrative expenses	$	329		$	526		$	118		$	83
Adjustment to estimated liquidation accruals		-
Management fee to Managing Shareholder		233			491			78			163
Net assets in liquidation at March 31, 2011	$	1,242
Total operating expenses		562			1,017			196			246
Loss from operations		(562	)		(1,017	)		(196	)		(246	)
Other (expense) income:
Equity in loss of RILG		(1,451	)		(2,137	)		(371	)		(1,033	)
Equity in loss of Maine Hydro		-			(231	)		-			(139	)
Other income (expense), net		10			367			4			(8	)
Total other expense, net		(1,441	)		(2,001	)		(367	)		(1,180	)
Net loss	$	(2,003	)	$	(3,018	)	$	(563	)	$	(1,426	)
Managing Shareholder – Net loss	$	(20	)	$	(30	)	$	(6	)	$	(14	)
Shareholders – Net loss		(1,983	)		(2,988	)		(557	)		(1,412	)
Net loss per Investor Share		(4,159	)		(6,267	)		(1,169	)		(2,962	)
Distributions per Investor Share		-			15,000			-			-

The accompanying notes are an integral part of these condensed consolidated financial statements.

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RIDGEWOOD ELECTRIC POWER TRUST IV
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
(unaudited, in thousands)
(Going Concern Basis)
	Nine Months Ended September 30,
(unaudited, in thousands, except per share data)
	2010			2009
	Three Months Ended March 31, 2010
Cash flows from operating activities:
Operating expenses:
Net cash (used in) provided by operating activities	$	(658	)	$	3,207
General and administrative expenses	$	179
Cash flows from financing activities:
Management fee to Managing Shareholder		78
Cash distributions to shareholders		-			(7,224	)
Total operating expenses		257
Net decrease in cash and cash equivalents		(658	)		(4,017	)
Loss from operations		(257	)
Cash and cash equivalents, beginning of year		7,804			11,683
Equity in loss of RILG		(737	)
Cash and cash equivalents, end of period	$	7,146		$	7,666
Other income, net		3
Total other expenses, net		(734	)
Net loss	$	(991	)
Managing Shareholder - Net loss	$	(10	)
Shareholders - Net loss		(981	)
Net loss per Investor Share		(2,057	)

The accompanying notes are an integral part of these condensed consolidated financial statements.

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RIDGEWOOD ELECTRIC POWER TRUST IV
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS
(Going Concern Basis)
(unaudited, in thousands)

	Three Months Ended
	March 31, 2010
Cash flows from operating activities:
Net cash used in operating activities	$	(110	)

Cash and cash equivalents, beginning of year		7,804

Cash and cash equivalents, end of period	$	7,694

The accompanying notes are an integral part of these condensed consolidated financial statements.

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RIDGEWOOD ELECTRIC POWER TRUST IV

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited, dollar amounts in thousands)

1. DESCRIPTION OF BUSINESS

Ridgewood Electric Power Trust IV (the “Trust”) is a Delaware trust formed on September 8, 1994. The Trust began offering shares in February 1995 and concluded its offering in September 1996. The Trust has 476.8 investor shares of beneficial interest (“Investor Shares”) outstanding. Prior to the adoption of the Trust’s Plan of Dissolution (described below), the objective of the Trust iswas to provide benefits to its shareholders through a combination of distributions of operating cash flow and capital appreciation. The Managing Shareholder of the Trust is Ridgewood Renewable Power LLC, a New Jersey limited liability company (the “Managing Shareholder” or “RRP”). Historically, the Trust focused primarily on power generation facilities located in the US.

The Trust’s accompanying condensed consolidated financial statements include the accounts of the Trust. ~~The~~and ~~Trust’s~~its ~~condensed~~former ~~consolidated~~investment. ~~financial~~The ~~statements~~Trust ~~also~~owned ~~include~~a ~~the Trust’s~~ 35.242% interest in Rhode Island LFG Genco, LLC (“RILG”), which is accounted for under the equity method of accounting, as the Trust has the ability to exercise significant influence, but does not control the operating and financial policies of the investment. The Trust owned a 50% interest in Ridgewood Maine Hydro Partners, L.P. (“Maine Hydro”), which was sold in November ~~2009, as further discussed in Note 5~~2010.

On ~~July~~November 2619, 2010, the Trust, Ridgewood Electric Power Trust I (“Trust I”) (through its 100% ownership of Ridgewood Olinda LLC), Ridgewood Electric Power Trust III (“Trust III”) and Ridgewood Power B Fund/Providence Expansion (“B Fund”, and together with the Trust, Trust I and Trust III, the “Trusts”) ~~entered~~sold ~~into an interest purchase agreement to sell~~ all of their respective limited liability company membership interests in RILG to ~~MIP~~Broadrock II Biopower I LLC (the “~~MIP~~Buyer”), ~~which~~an isentity affiliated with Macquarie Group Limited, an Australian based international company~~. Under the interest purchase agreement~~, ~~Trust~~as Ifurther ~~also~~discussed ~~agreed to sell its interest~~ in ~~another~~Note ~~landfill-gas business located in California~~4. A summary of the material terms and conditions of the interest purchase agreement was reported in a Current Report on Form 8-K filed with the United States Securities and Exchange Commission (“SEC”) on July 29, 2010.

On orNovember ~~about August 25~~19, 2010, the ~~Managing~~date ~~Shareholder,~~of onthe ~~behalf~~sale of ~~the Trusts~~RILG, ~~began~~the toPlan ~~solicit~~of ~~the~~Liquidation ~~approval~~and Dissolution of ~~their~~Ridgewood ~~shareholders~~Electric ~~for~~Power Trust IV (the ~~sale~~“Plan of ~~RILG.~~Dissolution”) ~~The~~became ~~shareholders~~effective. ofUnder ~~each~~the Plan of Dissolution, the ~~Trusts~~business ~~approved~~of the ~~proposed~~Trust ~~transactions~~shifted, asand ~~reported~~became inlimited ato ~~Current~~the ~~Report~~disposal onof ~~Form~~its ~~8-K~~remaining ~~filed~~assets ~~with~~and ~~the~~resolution ~~SEC~~of onits ~~September~~remaining ~~27, 2010~~liabilities. ~~The~~ ~~closing~~Upon the completion of these activities, if successful, the ~~transactions~~Managing ~~contemplated~~Shareholder byexpects to distribute any remaining cash to the ~~interest~~Trust’s ~~purchase~~shareholders ~~agreement~~and ~~are~~then ~~subject~~proceed to ~~certain~~terminate ~~additional~~the ~~closing~~Trust ~~conditions~~and its reporting obligations under the Securities Exchange Act of 1934, ~~including~~as ~~MIP~~amended ~~obtaining~~(the ~~debt~~“Exchange ~~financing~~Act”). The Trust is required to make adequate ~~finance~~provisions to ~~the~~satisfy its ~~future~~known ~~development~~and ofunknown ~~expansions~~liabilities, atwhich could substantially delay or limit the Trust’s ~~landfill-gas~~ability ~~businesses~~to make future distributions to shareholders. AsThe process of accounting for the Trust’s ~~date~~liabilities, ofincluding ~~the~~those ~~filing~~that ofare ~~this~~presently ~~report~~unknown, ~~the~~may ~~closing~~involve ofdifficult valuation decisions, which could adversely impact the amount ~~sale~~or timing of ~~the~~any ~~landfill-gas~~future ~~businesses~~distributions ~~has~~by ~~not~~the ~~occurred~~Trust.

Under the Plan of Dissolution, the Managing Shareholder has sole authority to conduct the Trust’s dissolution, liquidation and termination without additional shareholder approval. As of April 26, 2011, the Trust has not been liquidated, primarily due to holdback amounts due from the Buyer of RILG (see Note 4). The Trust does not anticipate any distributions until the Trust has completed the liquidation process, at which time, the Trust’s remaining cash, if any, will be distributed to its shareholders.

For the purposes of the Trust’s estimates of fees and expenses to be incurred during liquidation, management has assumed that the liquidation of the Trust will be completed by September 30, 2011. If the liquidation of the Trust, including the resolution of the matter discussed in Note 4, is not completed by that date, the actual expenses that the Trust will incur will likely increase.

The Trust has evaluated subsequent events and transactions through the date of the issuance of its financial statements, and concluded that there were no such events or transactions that require adjustment to, or disclosure in the notes to, the condensed consolidated financial statements.

2. BASIS OF PRESENTATION

The accompanying condensed consolidated financial statements are unaudited and have been prepared pursuant to the rules of the United States Securities and Exchange Commission (the “SEC”) and, in the opinion of management, include all adjustments that are necessary for a fair presentation of the condensed consolidated financial statements for the periods presented. Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to SEC rules. These condensed consolidated financial statements should be read in conjunction with the Trust’s Annual Report on Form 10-K for the year ended December 31, ~~2009~~2010, filed with the SEC on ~~March~~February 25, ~~2010~~2011 (the “~~2009~~2010 Form 10-K”). No significant changes have been made to the Trust’s accounting policies and estimates disclosed in its ~~2009~~2010 Form 10-K.

InThe ~~the~~Trust’s ~~opinion of management, the~~ condensed consolidated financial statements asfor ofperiods ~~September~~prior 30to November 20, 2010, ~~and~~were ~~for~~prepared on the ~~nine~~going ~~and~~concern ~~three~~basis ~~months~~of ~~ended~~accounting, ~~September~~which ~~30,~~contemplates ~~2010~~realization of assets and ~~2009,~~satisfaction ~~include~~of ~~all~~liabilities ~~adjustments~~in ~~(consisting~~the normal course of ~~normal~~business. ~~recurring~~Upon ~~accruals)~~the ~~necessary~~effectiveness ~~for~~of athe ~~fair~~Trust’s ~~presentation~~Plan of ~~the~~Dissolution ~~consolidated~~on ~~financial~~November ~~position~~20, ~~results~~2010, ofthe ~~operations~~Trust ~~and~~began ~~cash~~preparing ~~flows~~its ~~for~~consolidated financial statements on the ~~periods~~liquidation ~~presented~~basis of accounting. ~~The~~This ~~results~~basis of ~~operations~~accounting ~~for~~is considered appropriate when, among other things, liquidation of the ~~nine~~Trust ~~and~~is ~~three~~probable. ~~months~~Under ~~ended~~this ~~September~~basis 30of accounting, ~~2010~~assets are valued at their estimated net realizable values and ~~2009,~~liabilities are ~~not~~valued ~~necessarily~~at ~~indicative~~their ofestimated ~~the~~settlement ~~results~~amounts. toThe bevaluation ~~expected~~of ~~for~~assets ~~the~~and ~~full~~liabilities ~~year~~requires ormanagement ~~any~~to ~~other~~make ~~period~~significant estimates and assumptions.

3. RECENT ACCOUNTING PRONOUNCEMENTS

Fair Value Measurements

In January 2010, the Financial Accounting Standards Board (“FASB”) amended its previous guidance to clarify and provide additional disclosure requirements relating to recurring and non-recurring fair value measurements and employers’ disclosures about postretirement benefit plan assets in order to provide greater level of disaggregated information and more robust disclosures about valuation techniques and inputs to fair value measurements. The Trust adopted these amended standards on January 1, 2010, with no material impact on its condensed consolidated financial statements. Additionally, these amended standards require presentation of disaggregated activity within the reconciliation for fair value measurements using significant unobservable inputs (Level 3), beginning in the first quarter of 2011. The Trust is currently evaluating the impact of adopting this guidance on its condensed consolidated financial statements.

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RIDGEWOOD ELECTRIC POWER TRUST IV

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited, dollar amounts in thousands)

Subsequent Events

In May 2009, the FASB issued guidance regarding subsequent events which establishes general standards of accounting for, and disclosure of, events that occur after the balance sheet date but before financial statements are issued or are available to be issued. It requires the disclosure of the date through which an entity has evaluated subsequent events and the basis for that date. The Trust adopted this guidance effective June 30, 2009, with no material impact on its consolidated financial statements. In February 2010, the FASB amended its previous guidance regarding subsequent events by removing the requirement for a registrant to disclose a date through which subsequent events have been evaluated.

4. CASH AND CASH EQUIVALENTS

The Trust considers all highly liquid investments with maturities, when purchased, of three months or less as cash and cash equivalents. At September 30, 2010, cash and cash equivalents exceeded federal insured limits by $6,792, all of which was invested either in US Treasury bills or money market accounts that invest solely in US government securities.

5. INVESTMENTS

RILG

The Trust owns 35.2%, Trust I owns 6.8%, Trust III owns 19.6% and B Fund owns 38.4% of RILG. Summarized statements of operations data for RILG for the nine and three months ended September 30, 2010 and 2009 were as follows:

	Nine Months Ended September 30,						Three Months Ended September 30,
	2010			2009			2010			2009
Revenues	$	8,229		$	10,401		$	3,070		$	3,429
Gross (loss ) profit		(722	)		(2,112	)		743			(756	)
Loss from operations		(4,119	)		(6,059	)		(1,053	)		(2,930	)
Net loss		(4,119	)		(6,063	)		(1,054	)		(2,931	)
Trust share of loss in RILG		(1,451	)		(2,137	)		(371	)		(1,033	)

On November 3, 2009, RILG received notice from the United States Department of Energy (“DOE”) that it had been awarded a grant of $14,973 towards development expenses relating to RILG expansion. The grant is subject to various final closing conditions, including DOE approval of a plan to finance the expansion construction to be submitted by RILG prior to December 31, 2010. As of September 30, 2010, RILG recorded $165 of grant revenue, which is included as revenues in the above table.

From January 2010 to August 2010, RILG sold all of its electrical output in the spot or day-ahead wholesale electricity market. Effective September 1, 2010, RILG began selling all of its electricity under a long-term fixed price contract with built in cost escalations to Connecticut Municipal Electric Energy Cooperative (“CMEEC”). Renewable Portfolio Standards Attributes (“RPS Attributes”) generated as a result of the volume of electricity produced by RILG were also sold in the open market, but upon the commencement of the agreement with CMEEC, all RPS Attributes are sold to CMEEC at a contracted price of $25 per megawatt hour, which is currently above spot market prices.

Maine Hydro

Maine Hydro was owned equally by the Trust and Ridgewood Electric Power Trust V (“Trust V”). On November 20, 2009, Maine Hydro entered into a purchase and sale agreement and sold all of its assets for cash. The total gross purchase price of the sale, including a post-closing adjustment made in 2010 for estimated working capital at the time of the sale, totaled $7,293, of which $3,646 was allocated to the Trust. In 2009, the Trust recorded a gain of $2,158 on the sale of Maine Hydro.

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RIDGEWOOD ELECTRIC POWER TRUST IV

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(unaudited, dollar amounts in thousands)

~~Summarized~~Upon ~~statements~~conversion to the liquidation basis of ~~operations~~accounting, ~~data~~the ~~for~~Trust ~~Maine~~accrued ~~Hydro~~known ~~for~~estimated values of assets expected to be received and known estimated costs expected to be incurred in liquidation. On an ongoing basis, the ~~nine~~Trust evaluates the estimates and ~~three~~assumptions ~~months~~that ~~ended~~can ~~September~~have 30a significant impact on the Trust’s reported net assets in liquidation. Actual amounts may differ materially and adversely from these estimates. If there are delays in liquidating the Trust, ~~2009~~actual ~~were~~costs asincurred ~~follows:~~during the liquidation process would increase, reducing net assets available in liquidation and for future distributions to shareholders.

	Nine Months Ended			Three Months Ended
	September 30, 2009			September 30, 2009
Revenues	$	2,045		$	470
Gross profit (loss)		336			(166	)
Loss from operations		(462	)		(278	)
Net loss		(462	)		(278	)
Trust share of loss in Maine Hydro		(231	)		(139	)

3. CASH AND CASH EQUIVALENTS

6The Trust considers all highly liquid investments with maturities, when purchased, of three months or less as cash and cash equivalents. ~~TRANSACTIONS~~ At ~~WITH~~March ~~AFFILIATES~~31, 2011, cash and cash equivalents did not exceed federal insured limits.

~~The Trust records short-term payables to and receivables from its affiliates in the ordinary course of business~~4. The amounts payable to and receivable from its affiliates, other than amounts relating to management fees, do not bear interest. At September 30, 2010 and December 31, 2009, the Trust had outstanding intercompany receivables of $684 and $606, respectively, primarily due from RILG. At September 30, 2010, the Trust had outstanding intercompany payables of $69 to Ridgewood Power Management LLC. INVESTMENT

7On November 19, 2010, the Trusts sold all of their respective limited liability company membership interests in RILG to the Buyer for an initial aggregate gross sale price of $18,704, of which $6,584 was allocated to the Trust. ~~COMMITMENTS~~ ~~AND~~The ~~CONTINGENCIES~~initial gross sale price included $1,010 in estimated net working capital of RILG, which was subject to adjustment within 90 days following the closing, to reflect the difference between estimated and actual net working capital at closing.

~~RILG~~In isconnection ~~obligated,~~with ~~under~~ the ~~terms~~indemnification obligations of ~~various~~the ~~agreements~~Trusts ~~with~~under ~~Rhode~~the ~~Island~~interest ~~Resource~~purchase ~~Recovery~~agreement ~~Corporation~~for ~~(“RIRRC”)~~the RILG sale, the ~~owner~~Buyer ~~and~~held ~~operator~~back $3,000 of the ~~Central~~gross ~~Landfill~~sale inprice ~~Johnston~~of RILG, ~~Rhode~~of ~~Island~~which ~~(the “Landfill”)~~$1,056 was allocated to ~~construct~~the aTrust, ~~new~~for ~~electric~~a ~~generating~~period ~~facility~~of at9 months after the ~~Landfill,~~closing ~~with~~of anthe ~~estimated~~sale. ~~future~~The ~~construction~~holdback ~~cost~~period ofis ~~$130,000,~~scheduled ~~and~~ to ~~assume~~end ~~primary~~in ~~responsibility~~August ~~for~~2011. ~~costs~~Subsequent ~~associated~~to ~~with~~year-end, the ~~landfill~~estimated ~~gas~~working ~~collection~~capital ~~system~~calculation atfor ~~the~~RILG ~~Landfill~~was asfinalized, ofresulting ~~the~~in ~~first~~$238 tobeing ~~occur~~owed ofto the ~~commencement~~Buyer, of ~~operation~~which of$84 ~~the~~was ~~new~~allocated ~~electric~~to ~~generating~~the ~~facility~~Trust. orThe ~~December 31,~~working ~~2014.~~capital Asadjustment ~~part~~resulted ofin ~~this~~a ~~commitment,~~reduction ~~the~~of ~~Managing~~RILG’s ~~Shareholder~~portion ~~agreed,~~of ~~regardless~~the ofBuyer’s ~~whether~~holdback ~~the~~amount ~~proposed~~to ~~sale~~$2,762, of ~~RILG~~which ~~closes~~$972 oris ~~not,~~allocated to ~~undertake~~the ~~site~~Trust. ~~preparation~~In ~~work~~the atabsence anof ~~estimated~~any ~~cost~~claims offor ~~$875~~indemnification by the Buyer, ~~with~~the upremaining toholdback ~~$500~~amount ~~being~~will ~~loaned~~be released to ~~RILG~~the byTrusts ~~RIRRC.~~in IfAugust ~~RILG~~2011. ~~fails~~As toof ~~comply~~the ~~with~~issuance ~~its~~of ~~expansion~~these ~~obligations~~financial statements, itthe ~~could~~Buyer ~~forfeit~~has ~~its~~not ~~contracted~~notified ~~gas~~the ~~rights~~Trusts of any claims.

~~The~~Summarized ~~Trust~~statements may become subject to legal proceedings involving ordinary and routine claims related to its business. The ultimate legal and financial liability with respect to all such matters cannot be estimated with certainty and requires the use of ~~estimates~~operations indata ~~recording liabilities~~ for ~~potential~~RILG at ~~litigation~~March settlements. Estimates for losses from litigation are disclosed if considered reasonably possible and accrued if considered probable after consultation with outside counsel. If estimates of potential losses increase or the related facts and circumstances change in the future31, ~~the~~2010 ~~Trust~~was ~~may~~as be required to record additional litigation expense. While it is not possible to predict the outcome of the litigation discussed in this Note with certainty and some lawsuits, claims or proceedings may be disposed of unfavorably to the Trust, based on its evaluation of matters which are pending or asserted, the Trust’s management believes the disposition of such matters will not have a material adverse effect on the Trust’s business or its financial condition or results of operations.follows:

Revenues	$	2,236

Gross loss		(1,198	)

Loss from operations		(2,091	)

Net loss		(2,091	)

Trust share of loss in RILG		(737	)

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

This management’s discussion and analysis of the ~~operating results and financial condition of the~~ Trust as of ~~September~~March 3031, ~~2010~~2011 is intended to help readers analyze the accompanying condensed consolidated financial statements, notes and other information contained in this document. ~~Results of operations for the nine and three months ended September 30, 2010 are not necessarily indicative of results to be attained for any other period.~~ This discussion and analysis should be read in conjunction with the accompanying condensed consolidated financial statements, notes and other information included elsewhere in this report as well as the consolidated financial statements, notes and other information and Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in the Trust’s ~~2009~~2010 Form 10-K.

Forward-Looking Statements

Certain statements discussed in this item and elsewhere in this Quarterly Report on Form 10-Q constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements generally relate to the Trust’s plans, objectives and expectations for future events and include statements about the Trust’s expectations, beliefs, plans, objectives, intentions, assumptions and other statements that are not historical facts. These statements are based upon management’s expectations, opinions and estimates as of the date they are made. Although management believes that the expectations, opinions and estimates reflected in these forward-looking statements are reasonable, such forward-looking statements are subject to known and unknown risks and uncertainties many of which may be beyond the Trust’s control, which could cause actual results, performance and achievements to differ materially from the results, performance and achievements projected, expected, expressed or implied by the forward-looking statements. Examples of events that could cause actual results to differ materially from historical results or those anticipated include:

· possible contingent liabilities and risks associated with the ~~timing~~dissolution and ~~terms~~liquidation of ~~any~~the ~~sale~~Trust, including, without limitation, settlement of the Trust’s ~~assets~~liabilities and obligations,

· ~~the~~costs ~~outcome~~incurred ofin ~~the~~connection ~~matters~~with ~~described~~the incarrying ~~Part~~out I,of ~~Item~~the 1,plan ~~Note~~of 7.liquidation ~~“Commitments~~ and ~~Contingencies”~~dissolution of ~~this~~the ~~report~~Trust,

· ~~whether~~ the ~~landfill~~actual ~~gas-fired~~timing ~~electric~~of ~~generating~~the ~~project~~completion ~~will~~of bethe ~~able~~liquidation toprocess, ~~obtain financing required to expand~~ and ~~make planned changes to its operations,~~

· ~~changes~~the inamount ~~political~~ and ~~economic~~timing ~~conditions,~~of orliquidating ~~federal~~distributions, orif ~~state regulatory structures,~~any.

·Additional ~~government~~information ~~mandates,~~concerning ~~including~~the factors that could cause actual results to differ materially from those ~~associated~~in ~~with~~the ~~climate~~forward-looking ~~change~~statements is contained elsewhere in this report and in Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in the Trust’s 2010 Form 10-K. Any forward-looking statement that the Trust makes, speaks only as of the date of this report. The Trust undertakes no obligation to publicly update or revise any forward-looking statements or cautionary factors, as a result of new information, future events or otherwise, except as required by law.

·Liquidation ~~the~~Basis ~~ability~~ of ~~customers to pay for energy received,~~Accounting

·The ~~supplies~~Trust’s condensed consolidated financial statements for periods prior to November 20, 2010 were prepared on the going concern basis of accounting, which contemplates realization of assets and ~~prices~~satisfaction of ~~fuels~~liabilities in the normal course of business. Upon the effectiveness of the Trust’s Plan of Dissolution on November 20, 2010, the Trust began preparing its consolidated financial statements on the liquidation basis of accounting. This basis of accounting is considered appropriate when, among other things, liquidation of the Trust is probable. Under this basis of accounting, assets are valued at their estimated net realizable values and liabilities are valued at their estimated settlement amounts. The valuation of assets and liabilities requires management to make significant estimates and assumptions.

·Upon ~~operational~~conversion ~~status~~to the liquidation basis of ~~generating~~accounting, ~~plants~~the Trust accrued known estimated values of assets expected to be received and known estimated costs expected to be incurred during liquidation. On an ongoing basis, ~~including~~the ~~mechanical~~Trust ~~breakdowns~~evaluates the estimates and assumptions that could have a significant impact on the Trust’s reported net assets in liquidation. Actual amounts may differ materially and adversely from these estimates. If there are delays in liquidating the Trust, actual costs incurred during the liquidation process would increase, reducing net assets available in liquidation and for future distributions to shareholders.

· volatility in the price for electric energy, natural gas or renewable energy.

Additional information concerning the factors that could cause actual results to differ materially from those in the forward-looking statements is contained in this report and in Item 1A. “Risk Factors”, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and elsewhere in the Trust’s 2009 Form 10-K. Any forward-looking statement that the Trust makes, speaks only as of the date of this report. The Trust undertakes no obligation to publicly update or revise any forward-looking statements or cautionary factors, as a result of new information, future events or otherwise, except as required by law.

Critical Accounting Policies and Estimates

The ~~following~~ discussion and analysis of the Trust’s financial condition and results of operations are based upon the Trust’s condensed consolidated financial statements, which have been prepared in conformity with GAAP. In preparing these financial statements, the Trust is required to make certain estimates, judgments and assumptions that affect the reported ~~amounts~~amount of the Trust’s assets, liabilities, revenues and expenses, including the disclosure of contingent assets and liabilities, as well as the reported amounts of changes in net assets. The estimates also affect the reported estimated value of net realizable assets and settlement of liabilities. The Trust evaluates these estimates and assumptions on an ongoing basis. The Trust bases its estimates and assumptions on historical experience and on various other factors that the Trust believes to be reasonable at the time the estimates and assumptions are made. However, future events and their effects cannot be predicted with absolute certainty. Therefore, the determination of estimates requires the exercise of judgment. Actual results may differ from these estimates and assumptions under different circumstances or conditions, and such differences may be material to the condensed consolidated financial statements. No material changes have been made to the Trust’s critical accounting policies and estimates disclosed in its ~~2009~~2010 Form 10-K.

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Results of Operations and Changes in Financial Condition

~~Nine~~As ~~months~~the ~~ended~~Trust ~~September~~adopted 30the liquidation basis of accounting effective November 20, 2010, ~~compared~~any tocosts incurred and income received since then will be included in the ~~nine~~condensed ~~months~~consolidated ~~ended~~statements ~~September~~of ~~30,~~changes ~~2009~~in net assets.

~~General~~Net ~~and~~assets ~~administrative~~at ~~expenses~~March ~~decreased~~31, 2011 was $01.2 million , unchanged from ~~$0.5~~net ~~million~~assets ~~for~~at December 31, 2010 as the ~~nine~~Trust’s ~~months~~estimates ~~ended~~of ~~September~~total ~~30,~~liquidation ~~2009~~accruals todid ~~$0.3~~not ~~million~~change ~~for~~during the ~~same~~quarter. ~~period~~During inthe ~~2010~~quarter, ~~primarily~~the ~~due~~Trust’s tocash balances decreased $385,000 as a ~~decrease~~result inof ~~professional~~payment of Trust liabilities, including the payment of management fees to the Managing Shareholder of $14,000.

~~Management~~For the purposes of the Trust’s estimates of fees and expenses to ~~the~~be ~~Managing~~incurred ~~Shareholder~~during ~~declined~~liquidation, bymanagement ~~$0.3~~has ~~million~~assumed ~~from~~that ~~$0.5~~the ~~million~~liquidation ~~for~~of the ~~nine~~Trust ~~months~~will ~~ended~~be completed by September 30, ~~2009~~2011. toIf ~~$0.2~~the ~~million~~liquidation ~~for~~of the ~~same~~Trust, ~~period~~including inthe ~~2010,~~resolution ~~due~~of tothe amatter ~~decrease~~discussed in ~~the~~Part ~~net~~I, ~~asset~~Item ~~value~~5, Note 4 “Investment” of this report, is not completed by that date, the actual expenses that the Trust will incur will likely increase.

~~For~~The ~~the~~condensed ~~nine~~consolidated ~~months~~statement ~~ended~~of ~~September~~operations ~~30,~~and ~~2010,~~ the ~~Trust~~statement ~~recorded~~of ~~equity~~cash ~~loss~~flows ofare ~~$1.4~~presented ~~million~~on ~~from~~a ~~its~~going ~~investment~~concern inbasis ~~RILG~~of ~~compared~~accounting toand ~~equity~~therefore ~~loss~~only ofinclude ~~$2.1~~results ~~million~~ for the ~~same~~three ~~period~~months inended ~~2009.~~March ~~The~~31, ~~decrease~~2010 inand ~~equity~~as ~~loss~~a ~~of $0.7 million was primarily attributable to decreases in maintenance expenses~~result, ~~royalty~~no ~~expenses~~comparative ~~and~~discussion ~~depreciation~~is ~~expense~~presented. ~~This was partially offset by:~~

- an increase in legal fees and development expenses for planned plant expansion and

- a decrease in power generation revenue in the 2010 period as a result of the termination of a long-term power contract in January 2010 and electric generation being sold at a lower aggregate price in the open market until September 2010.

RILG operating results for the 2010 and 2009 periods also include $3.4 million and $2.6 million, respectively, of engineering development and legal fees relating to the planned plant expansion.

For the nine months ended September 30, 2009, the Trust recorded equity loss of $0.2 million from its investment in Maine Hydro. In November 2009, Maine Hydro entered into a purchase and sale agreement and sold for cash, all of the assets of Maine Hydro.

During the 2009 period, the Trust recorded other income of $0.4 million, which primarily represents the sale of RPS Attributes that were associated with electricity produced by Indeck Maine Energy, LLC (“Indeck Maine”) prior to its sale in December 2008.

Total assets decreased $2 million from $10.4 million at December 31, 2009 to $8.4 million at September 30, 2010 primarily due to decreases of approximately $1.4 million from the Trust’s investment in RILG and $0.7 million in cash and cash equivalents.

Three months ended September 30, 2010 compared to the three months ended September 30, 2009

For the three months ended September 30, 2010, the Trust recorded equity loss of $0.4 million from its investment in RILG compared to equity loss of $1 million for the same period in 2009. The decrease in equity loss of approximately $0.6 million was primarily attributable to a decrease in maintenance expenses and depreciation expense, partially offset by an increase in legal fees and development expenses for planned plant expansion and a decrease in power generation revenue due to the termination of a long-term power contract and sales of electric output in the open market as a result. RILG operating results for 2010 and 2009 periods also include $1.8 million and $0.9 million, respectively, of engineering development and legal fees relating to the planned plant expansion.

Liquidity and Capital Resources

Nine months ended September 30, 2010 compared to the nine months ended September 30, 2009

At September 30, 2010 the Trust had cash and cash equivalents of $7.1 million, a decrease of $0.7 million from $7.8 million at December 31, 2009, as a result of cash used in operating activities.

Cash used in operating activities for the nine months ended September 30, 2010 was $0.7 million as compared to cash provided by operating activities of $3.2 million for the same period in 2009. This decrease in cash flow provided by operating activities of $3.9 million in the 2010 period was primarily due to the 2009 collection of amounts related to Indeck Maine’s operations net of related distributions to Trust V and Indeck Energy Services, Inc.

There were no financing activities for the 2010 period. For the nine months ended September 30, 2009, the Trust used cash of $7.2 million relating to the cash distributions to shareholders.

Future Liquidity and Capital Resource Requirements

The Trust ~~expects~~believes ~~cash~~it ~~flows~~has ~~from~~sufficient ~~its~~cash ~~equity~~and ~~investment in RILG, along with existing~~ cash, ~~cash~~ equivalents ~~and~~to ~~borrowing~~provide ~~capabilities~~working ~~will~~capital befor ~~sufficient~~the tonext ~~provide~~12 months. ~~working~~The ~~capital~~Trust ~~and~~intends ~~fund~~to ~~capital~~distribute ~~expenditures~~excess ofcash, ~~the~~if ~~Trust~~any, ~~but~~to ~~not~~its ~~for~~shareholders ~~its~~after ~~investment~~liquidating inits ~~RILG,~~assets ~~for~~and ~~the~~satisfying ~~next~~its ~~12 months~~liabilities.

8For a discussion of the Buyer holdback receivable in connection with the sale of RILG, see Note 4 “Investment” in the notes to the condensed consolidated financial statements in Part I, Item 1 of this report.

~~Table~~Off-Balance ofSheet ~~Contents~~Arrangements, Contractual Obligations, Commitments and Contingencies

~~Off-Balance Sheet Arrangements and Contractual Obligations and Commitments~~None.

The Trust has no off-balance sheet arrangements.

For a discussion of developments regarding the Trust’s contractual obligations, see Note 7 “Commitments and Contingencies” in the notes to the condensed consolidated financial statements in Part I, Item 1 of this report.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Not required.

ITEM 4. CONTROLS AND PROCEDURES

In accordance with Rule 13a-15(b) of the ~~Securities~~ Exchange Act ~~of 1934~~, ~~as amended (~~the ~~“Exchange Act”), the~~ Trust’s management, with the participation of the Trust’s Chief Executive ~~Officer~~ and ~~Chief~~ Financial Officer, has evaluated the effectiveness of the Trust’s disclosure controls and procedures, as defined in Exchange Act Rule 13a-15(e). Based on this evaluation, the Trust’s Chief Executive ~~Officer~~ and ~~Chief~~ Financial Officer concluded that the Trust’s disclosure controls and procedures were effective as of the end of the period covered by this report to ensure that information required to be disclosed by the Trust in reports filed pursuant to the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms and that information required to be disclosed by the Trust is accumulated and communicated to senior management so as to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

The Trust’s Chief Executive ~~Officer~~ and ~~Chief~~ Financial Officer ~~have~~has concluded that there was no change in the Trust's internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that occurred during the quarter ended ~~September~~March 3031, ~~2010~~2011 that has materially affected, or is reasonably likely to materially affect, the Trust’s internal control over financial reporting.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

None.

ITEM 1A. RISK FACTORS

~~There~~Not ~~have been no material changes to the risk factors disclosed in the Trust's 2009 Form 10-K~~required.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. RESERVED

ITEM 5. OTHER INFORMATION

None.

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ITEM 6. EXHIBITS

Exhibit No.		Description
2.1		~~Interest~~Plan ~~Purchase Agreement dated as~~ of ~~July~~Liquidation ~~26, 2010 by~~ and ~~among~~Dissolution ~~Ridgewood~~of ~~Electric Power Trust I,~~ Ridgewood ~~Olinda LLC, Ridgewood~~ Electric Power Trust ~~III, Ridgewood Electric Power Trust~~ IV, Ridgewood Power B Fund/Providence Expansion, Ridgewood Renewable Power LLC, solely in its capacity as Sellers’ Representative, Brea Parent 2007, LLC, Rhode Island LFG Genco, LLC, Ridgewood Renewable Power LLC, Ridgewood Power Management LLC and MIP II BioPower LLC (incorporated by reference to Exhibit 2.12 to the ~~Current~~Annual Report on Form 810-K filed by the Registrant with the SEC on ~~July~~February 2925, ~~2010~~2011).
10.1	*	First Amendment to the Amended and Restated Site Lease and Landfill Gas Delivery Agreement dated as of July 20, 2009, by and among Rhode Island Resource Recovery Corporation, Ridgewood Gas Services LLC and Rhode Island LFG Genco, LLC (incorporated by reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q filed by Ridgewood Electric Power Trust III with the SEC on November 15, 2010).
31	*	Certification of Jeffrey H. Strasberg, Chief Executive and Financial Officer of the Registrant, pursuant to Securities Exchange Act Rule 13a-14(a).
10.2	*	Second Amendment to the Amended and Restated Site Lease and Landfill Gas Delivery Agreement dated as of August 13, 2010, by and among Rhode Island Resource Recovery Corporation, Ridgewood Gas Services LLC and Rhode Island LFG Genco, LLC (incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q filed by Ridgewood Electric Power Trust III with the SEC on November 15, 2010).
32	*	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, signed by Jeffrey H. Strasberg, Chief Executive and Financial Officer of the Registrant.
31.1	*	Certification of Randall D. Holmes, Chief Executive Officer of the Registrant, pursuant to Securities Exchange Act Rule 13a-14(a).
31.2	*	Certification of Jeffrey H. Strasberg, Chief Financial Officer of the Registrant, pursuant to Securities Exchange Act Rule 13a-14(a).
32	*	Certifications pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of The Sarbanes-Oxley Act of 2002, signed by Randall D. Holmes, Chief Executive Officer of the Registrant, and Jeffrey H. Strasberg, Chief Financial Officer of the Registrant.

_____________________

* Filed herewith.

109

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~~SIGNATURES~~SIGNATURE

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

	RIDGEWOOD ELECTRIC POWER TRUST IV
Date: November 15, 2010	By:	/s/ Randall D. Holmes
Date: April 26, 2011	By:	/s/ Jeffrey H. Strasberg
		Randall D. Holmes
		President and Chief Executive Officer
		(Principal Executive Officer)
Date: November 15, 2010	By:	/s/ Jeffrey H. Strasberg
		Jeffrey H. Strasberg
		Executive Vice President and Chief Financial Officer
		Chief Executive and Financial Officer
		(Principal Financial and Accounting Officer)
		(Principal Executive, Financial and Accounting Officer)

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