    <SEC-DOCUMENT>0001564590-20-010981-index.html : 20200316
    <SEC-HEADER>0001564590-20-010981.hdr.sgml : 20200316
    <ACCEPTANCE-DATETIME>20200316071540
    ACCESSION NUMBER:		0001564590-20-010981
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		22
    CONFORMED PERIOD OF REPORT:	20200316
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20200316
    DATE AS OF CHANGE:		20200316

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FUELCELL ENERGY INC
    		CENTRAL INDEX KEY:			0000886128
    		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
    		IRS NUMBER:				060853042
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1031

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14204
    		FILM NUMBER:		20715259

    	BUSINESS ADDRESS:
    		STREET 1:		3 GREAT PASTURE RD
    		CITY:			DANBURY
    		STATE:			CT
    		ZIP:			06813
    		BUSINESS PHONE:		2038256000

    	MAIL ADDRESS:
    		STREET 1:		3 GREAT PASTURE ROAD
    		CITY:			DANBURY
    		STATE:			CT
    		ZIP:			06813

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ENERGY RESEARCH CORP /NY/
    		DATE OF NAME CHANGE:	19930328
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>fcel-8k_20200316.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: fcel-8k_20200316.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>fcel-ex991_31.htm
    <DESCRIPTION>EX-99.1
    <TEXT>
    Document 2 - file: fcel-ex991_31.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>fcel-ex992_32.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: fcel-ex992_32.htm

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    <SEQUENCE>4
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    Document 4 - file: g4le2vdjfbz1000017.jpg

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    Document 5 - file: gfvxm20njfub000001.jpg

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    <FILENAME>g4le2vdjfbz1000002.jpg
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    Document 6 - file: g4le2vdjfbz1000002.jpg

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    Document 7 - file: g4le2vdjfbz1000014.jpg

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    Document 8 - file: g4le2vdjfbz1000005.jpg

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    Document 9 - file: g4le2vdjfbz1000013.jpg

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    <SEQUENCE>10
    <FILENAME>g4le2vdjfbz1000007.jpg
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    Document 10 - file: g4le2vdjfbz1000007.jpg

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    <FILENAME>g4le2vdjfbz1000003.jpg
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    Document 11 - file: g4le2vdjfbz1000003.jpg

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    <SEQUENCE>12
    <FILENAME>g4le2vdjfbz1000010.jpg
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    Document 12 - file: g4le2vdjfbz1000010.jpg

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    Document 13 - file: g4le2vdjfbz1000012.jpg

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    Document 14 - file: g4le2vdjfbz1000006.jpg

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    <SEQUENCE>15
    <FILENAME>g4le2vdjfbz1000009.jpg
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    Document 15 - file: g4le2vdjfbz1000009.jpg

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    <SEQUENCE>16
    <FILENAME>g4le2vdjfbz1000001.jpg
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    Document 16 - file: g4le2vdjfbz1000001.jpg

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    <SEQUENCE>17
    <FILENAME>g4le2vdjfbz1000008.jpg
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    Document 17 - file: g4le2vdjfbz1000008.jpg

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    <SEQUENCE>18
    <FILENAME>g4le2vdjfbz1000018.jpg
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    Document 18 - file: g4le2vdjfbz1000018.jpg

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    <SEQUENCE>19
    <FILENAME>g4le2vdjfbz1000004.jpg
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    Document 19 - file: g4le2vdjfbz1000004.jpg

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    <FILENAME>g4le2vdjfbz1000011.jpg
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    Document 20 - file: g4le2vdjfbz1000011.jpg

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    Document 21 - file: g4le2vdjfbz1000015.jpg

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    <DOCUMENT>
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    <SEQUENCE>22
    <FILENAME>g4le2vdjfbz1000016.jpg
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    Document 22 - file: g4le2vdjfbz1000016.jpg

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