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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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26-50 of 57 items listed First Previous Next Last
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Seller Status Date
Ontario Hydro Services Co. Brookfield Asset Management Inc. Completed 03/08/2002 340
ONEOK, Inc. Dynegy Inc. Completed 02/01/2000 308
ONEOK, Inc. CCE Holdings LLC Completed 11/18/2004 175
ONEOK, Inc. Southwest Gas Corporation Failed 1,800
ONEOK, Inc. Koch Industries Completed 07/01/2005 1,350
ONEOK, Inc. Westar Energy Inc Completed 10/31/2006 53
ONEOK, Inc. Oneok Partners, L.P. Pending n/a
Oncor Electric Delivery Company InfraREIT, Inc. Pending 1,275
OMV UK Limited Conoco Inc. Completed 07/14/2011 28
OMV AG Preussag Energie GmbH Completed n/a
OMDA Oil and Gas, Inc. Undisclosed Seller Unknown n/a
Oklahoma Municipal Power Auth Duke Energy Corporation Completed 12/14/2000 n/a
Oklahoma Gas and Electric Company AES Shady Point Inc Completed 27
Oklahoma Gas and Electric Company NRG McClain LLC Completed 07/13/2004 160
Oklahoma Gas and Electric Company Kelson Holdings LLC Completed 852
Oil Search Limited Chevron Niugini Ltd. (CNGL) Completed 07/21/2003 n/a
Oil and Natural Gas Corp's (ONGC) Talisman Energy Inc. Unknown n/a
Oil & Natural Gas Corp. Imperial Energy PLC Unknown 2,600
Ohio Power Company Columbus Southern Power Company Completed n/a
Ohio Edison Company Centerior Energy Completed 11/07/1997 1,600
Oglethorpe Power Corporation Effingham County Power Pending n/a
Oglethorpe Power Corporation KGen Power Corporation Completed 04/08/2011 531
Oglethorpe Power Corp. Dynegy Inc. Completed 05/01/2009 105
Oglethorpe Power Corp. Hartwell Energy LP Completed 10/13/2009 149
Ocean Power Westcoast Energy, Inc. Completed n/a
26-50 of 57 items listed First Previous Next Last
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