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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		 Status Date
Complete		 Value
($M)
Wisconsin Public Service Corporation Wisconsin Fuel and Light Completed 04/02/2001 55
WPPI Energy Wisconsin Energy Corporation Unknown 239
Wisconsin Power & Light Company Wisconsin Electric Power Company Completed 03/01/2011 n/a
Wisconsin Power & Light Company Wind Capital Group, LLC Completed n/a
Williams Partners L.P. Williams Pipe Line Completed n/a
Williams Energy Partners L.P. Williams Pipe Line Completed 04/11/2002 1,000
Williams Partners L.P. Williams Companies, Inc Completed 11/23/2010 782
Williams Partners L.P. Williams Companies, Inc Completed 12/13/2006 1,200
Williams Partners L.P. Williams Companies, Inc Completed 750
Wisconsin Energy Corporation WICOR, Inc. Completed 04/26/2000 1,275
WorleyParsons UniField Engineering, Inc. Unknown 17
Williams Companies, Inc Undisclosed Seller Completed 258
Whittier Energy Corporation Undisclosed Seller Completed 8
Whiting Petroleum Corporation Undisclosed Seller Completed 03/31/2005 65
Whiting Petroleum Corporation Undisclosed Seller Completed 01/18/2005 19
Wentworth Energy Undisclosed Seller Completed 01/31/2006 n/a
Wentworth Energy Undisclosed Seller Completed 01/24/2006 n/a
W&T Offshore, Inc. Undisclosed Seller Completed 07/08/2005 n/a
Western Lakota Energy Services Inc. Undisclosed Seller Unknown 13
Wysak Inc. Undisclosed Seller Completed 07/28/2005 n/a
Wysak Inc. Undisclosed Seller Completed 06/21/2005 n/a
Western Wind Energy Undisclosed Seller Unknown n/a
Western Gas Resources Inc Undisclosed Seller Completed 10/01/2004 82
WaveForm Energy Limited Undisclosed Seller Completed 10/13/2005 n/a
Williams Companies, Inc TransCanada Pipelines Ltd. Completed 03/19/2001 n/a
1-25 of 105 items listed First Previous Next Last
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