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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) |
DTE Energy Company |
Integrys Energy Group, Inc. |
Unknown |
 |
|
n/a |
Direct Energy |
Gateway Energy Marketing |
Unknown |
 |
|
90 |
Dominion Power |
Tenaska Energy, Inc. |
Unknown |
 |
|
n/a |
Dominion Resources, Inc. |
United American Energy Holdings Corp. |
Unknown |
 |
|
n/a |
Duke Energy Field Services, LLC |
Canadian Midstream Services, Ltd. (CMSL) |
Unknown |
 |
|
n/a |
Duke Energy Field Services, LLC |
Gas Supply Resources Inc. |
Unknown |
 |
|
n/a |
Donaldson, Lufkin & Jenrette Inc. |
First Dominion Capital |
Unknown |
 |
|
n/a |
Dunedin Electricity |
Otago Power |
Unknown |
 |
|
n/a |
Diamond Generating Corporation |
InterGen |
Unknown |
 |
|
n/a |
Devlan Exploration Inc. |
SADDLE RESOURCES INC. |
Unknown |
 |
|
n/a |
Direct Energy |
Strategic Energy |
Unknown |
 |
|
300 |
Devon Energy Inc |
Mitchell Energy & Development corp. |
Unknown |
 |
|
3,500 |
Dominion Virginia Power |
Chickahominy River Energy Corporation |
Unknown |
 |
|
49 |
Dominion Virginia Power |
James River Energy Company |
Unknown |
 |
|
49 |
Delta Petroleum Corporation |
Alpine Resources, Inc. |
Unknown |
 |
|
n/a |
Dune Energy, Inc. |
Voyager Partners, Limited |
Unknown |
 |
|
68 |
Delta Petroleum Corporation |
Castle Energy Corporation |
Unknown |
 |
|
n/a |
Delta Petroleum Corporation |
Armstrong Oil and Gas |
Unknown |
 |
|
24 |
DONG Energy |
ConocoPhillips Petroleum International Corp. |
Unknown |
 |
|
n/a |
Dune Energy, Inc. |
Goldking Energy Corporation |
Unknown |
 |
|
321 |
Distributed Power, Inc. |
Undisclosed Seller |
Unknown |
 |
|
n/a |
Delta Oil and Gas Inc. |
Undisclosed Seller |
Unknown |
 |
|
n/a |
Doral Energy Corporation |
Blugrass Energy Inc. |
Unknown |
 |
|
n/a |
Duke Energy Corporation |
Invenergy Cannon Falls LLC |
Pending |
 |
|
1 |
DTE Energy Company |
Apex Clean Energy |
Pending |
 |
|
n/a |
|