    <SEC-DOCUMENT>0001193125-18-074676-index.html : 20180308
    <SEC-HEADER>0001193125-18-074676.hdr.sgml : 20180308
    <ACCEPTANCE-DATETIME>20180308114516
    ACCESSION NUMBER:		0001193125-18-074676
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		25
    CONFORMED PERIOD OF REPORT:	20171231
    FILED AS OF DATE:		20180308
    DATE AS OF CHANGE:		20180308
    EFFECTIVENESS DATE:		20180308

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BlackRock Utilities, Infrastructure & Power Opportunities Trust
    		CENTRAL INDEX KEY:			0001528988
    		IRS NUMBER:				000000000
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1031

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-22606
    		FILM NUMBER:		18675620

    	BUSINESS ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700
    		BUSINESS PHONE:		(800) 882-0052

    	MAIL ADDRESS:
    		STREET 1:		100 BELLEVUE PARKWAY
    		CITY:			WILMINGTON
    		STATE:			DE
    		ZIP:			19809-3700

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	BlackRock Utility & Infrastructure Trust
    		DATE OF NAME CHANGE:	20110830
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>d510074dncsr.htm
    <DESCRIPTION>BLACKROCK UTILITIES, INFRASTRUCTURE & POWER OPPORTUNITIES TRUST
    <TEXT>
    Document 1 - file: d510074dncsr.htm

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    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>2
    <FILENAME>d510074dex99cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302
    <TEXT>
    Document 2 - file: d510074dex99cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>3
    <FILENAME>d510074dex99906cert.htm
    <DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906
    <TEXT>
    Document 3 - file: d510074dex99906cert.htm

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    <DOCUMENT>
    <TYPE>EX-99.19(A)
    <SEQUENCE>4
    <FILENAME>d510074dex9919a.htm
    <DESCRIPTION>SECTION 19(A) NOTICE
    <TEXT>
    Document 4 - file: d510074dex9919a.htm

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    <DOCUMENT>
    <TYPE>EX-99.PROXY.POL
    <SEQUENCE>5
    <FILENAME>d510074dex99proxypol.htm
    <DESCRIPTION>PROXY VOTING POLICY
    <TEXT>
    Document 5 - file: d510074dex99proxypol.htm

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    <TYPE>EX-99.CORP.GOV
    <SEQUENCE>6
    <FILENAME>d510074dex99corpgov.htm
    <DESCRIPTION>GLOBAL CORPORATE GOVERNANCE & ENGAGEMENT PRINCIPLES
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    Document 12 - file: g477213g57b79.jpg

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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    <DESCRIPTION>GRAPHIC
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    Document 17 - file: g477213g98u13.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 19 - file: g517341g26d92.jpg

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    <DESCRIPTION>GRAPHIC
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    Document 22 - file: g517341g69c14.jpg

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