Private company
Who owns Midway-Sunset Cogeneration Company
One company in the researched set discloses a stake in Midway-Sunset Cogeneration Company, worth $16m between them. Midway-Sunset Cogeneration Company is private, so no 13F reports it: a 13F covers exchange listed positions only. These figures exist because each holder disclosed the stake in its own filings.
Midway-Sunset Cogeneration Company - Profile
- Type
- partnership
- Based in
- United States
- Founded
- 1987
Midway-Sunset Cogeneration Company is a California general partnership that owns the Midway Sunset Cogeneration Project, a roughly 225 megawatt natural gas fired cogeneration plant at Fellows in Kern County, California, about 40 miles west of Bakersfield. The plant runs three General Electric Frame 7E combustion turbine generators and was certified by the California Energy Commission in 1987 before entering commercial operation on 1 May 1989. It sells electricity into the California market and supplies process steam across the fence to the operator of the adjacent Midway-Sunset oil field, where the steam is injected for thermally enhanced heavy oil recovery. Steam demand from the host has fallen over time, and by 2014 only one of the three turbines was still supplying it.
Source
Midway-Sunset Cogeneration Company files nothing with the SEC, so none of this comes from a filer record. The description was written for this site in August 2026 from California Energy Commission: Midway Sunset Cogeneration Project, Global Energy Monitor: Midway Sunset cogeneration power station and NRG Energy 2020 Form 10-K. The ownership figures below come from the holders' filings instead, and are sourced row by row.
The disclosed stakes
One row per position. Where a holder reports the same company in two share classes, both rows are shown rather than summed, because the class is part of a position's identity.
Where each figure comes from
A private stake has no ownership form behind it, so the source is always the holder's own filing or disclosure. Anything modelled says so, with the arithmetic.
- NRG Energy, Inc., as of 31 Dec 2025. FY2025 10-K Note 16 equity method investments table: 'Midway-Sunset Cogeneration Company, 50.0% Economic Interest, Investment Balance $16 million' as of 31 Dec 2025, the only other line item in the table besides Gladstone, together totaling the disclosed $16 million 'Total equity investments in affiliates.' Genuine 50% joint-venture ownership in a named cogeneration company, not a PPA, tax equity structure, or wholly owned generation asset. source
What this page is not
It is not a complete register. It lists the holders who happen to be inside the researched set and disclosed the stake themselves. A private company can have many other shareholders, and nothing here rules them out: venture investors, founders and employees usually appear in no public filing at all. Percentages are of Midway-Sunset Cogeneration Company where a holder stated one, and are missing where no holder did.