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Home > Industry Data > Industry Mergers & Acquisitions

Industry Mergers & Acquisitions - Updated 07/16/21

Below is a list of major energy (electric power) mergers and acquisitions since 1985 and all others since 1996. Type in a keyword for a specific search of purchasers and sellers. Using the pull-down menu, you may sort by purchaser, seller, status or date complete. The same pull-down allows you to filter by location or merger type to narrow your results. To view purchasers within a specific alpha section, click the desired letter below.

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1-25 of 105 items listed First Previous Next Last
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Purchaser Seller     
WPPI Energy Wisconsin Energy Corporation Unknown 239
Westar Energy Inc ONEOK, Inc. Unknown 53
Westport Resources Corp. Belco Oil & Gas Corp. Unknown 992
WPS Power Development, Inc. CH Energy Group, Inc. Unknown 61
Winter Park, City of Progress Energy, Inc. Unknown n/a
Welton Energy Corporation Infiniti Resources International Ltd. Unknown n/a
Welwyn Resources Limited Pan Orient Energy Limited Unknown n/a
Wartsila Corporation Gerhardt Holding Co Inc. Unknown n/a
Wisconsin Public Service Corporation Fox Energy Company LLC Unknown 440
WorleyParsons UniField Engineering, Inc. Unknown 17
Wind Energy America, Inc. Boreal Energy Inc. Unknown n/a
Western Lakota Energy Services Inc. Undisclosed Seller Unknown 13
Western Wind Energy Undisclosed Seller Unknown n/a
Williams Companies, Inc Aspect Abundant Shale LP Unknown 166
WEC Energy Group Apex Clean Energy Pending 302
WEC Energy Group Bishop Hill Energy II, LLC Pending 148
WEC Energy Group Avangrid Renewables Pending 235
WEC Energy Group Thunderhead Wind Energy Center Pending 338
Westar Energy Great Plains Electric Coop Inc Pending 14,000
Woodside Petroleum Limited Energy Partners Failed 880
Washington Water Power Company NV Energy (formerly Sierra Pacific Power Company) Failed n/a
Westar Energy Inc Kansas City Power & Light Company Failed 2,000
Wisconsin Public Service Corporation MGE Energy Completed 09/24/2001 n/a
Wisconsin Energy Corporation Integrys Energy Group, Inc. Completed 04/08/2015 5,700
Wentworth Energy Undisclosed Seller Completed 01/24/2006 n/a
1-25 of 105 items listed First Previous Next Last
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