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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 57 items listed First Previous Next Last
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Status Date
Ocean Power Westcoast Energy, Inc. Completed n/a
ONEOK, Inc. Westar Energy Inc Completed 10/31/2006 53
Ormat Industries Viridity Energy, Inc. Completed 03/16/2017 35
Occidental Petroleum Corporation Vintage Petroleum Inc. Approved 3,800
Ormat Industries US Geothermal Inc Completed 110,000
Ormat Industries Undisclosed Seller Completed n/a
Ormat Industries Undisclosed Seller Completed 2
OMDA Oil and Gas, Inc. Undisclosed Seller Unknown n/a
Ontario Hydro Services Co. Thorold, City of Completed n/a
Oil and Natural Gas Corp's (ONGC) Talisman Energy Inc. Unknown n/a
Onyx Renewable Partners L.P. SunEdison Pending n/a
Ormat Industries Steamboat Development Corp Completed 05/23/2004 20
ONEOK, Inc. Southwest Gas Corporation Failed 1,800
Occidental Petroleum Corporation Sempra Generation Completed 12/31/2010 179
OMV AG Preussag Energie GmbH Completed n/a
Oregon Electric Utility Company Portland General Electric Company Failed 2,350
Occidental Petroleum Corporation Plains All American Pipeline, L.P. Unknown n/a
Occidental Petroleum Corporation Phibro Inc. Unknown 250
ONEOK, Inc. Oneok Partners, L.P. Pending n/a
Oklahoma Gas and Electric Company NRG McClain LLC Completed 07/13/2004 160
Otter Tail Power Company Northwestern Energy Corporation Completed n/a
Orsted Lincoln Clean Energy Pending 580
ONEOK, Inc. Koch Industries Completed 07/01/2005 1,350
Oglethorpe Power Corporation KGen Power Corporation Completed 04/08/2011 531
Oklahoma Gas and Electric Company Kelson Holdings LLC Completed 852
1-25 of 57 items listed First Previous Next Last
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