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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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Purchaser |

Seller |
Status |
 |
Date Complete |
Value ($M) |
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 |
|