Mars Snackfood US
Mars Snackfood US is a 4 MW natural gas power plant in Cook County, Illinois, operated by M&M Mars Inc. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 1987.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 3.5 MW
- 3 MW net summer
- Generating units
- 1
- In service
- 1987
- EIA plant ID
- 54855
Where it is
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- County
- Cook County, Illinois
- Coordinates
- 41.9171, -87.7922
- Balancing authority
- PJM
- Sector
- Industrial CHP
Units, technology and status
- Operator of record
- M&M Mars Inc
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Out of service but expected to return to service in next calendar year
Mars Snackfood US: FAQ
- Where is Mars Snackfood US?
- In Cook County, Illinois (IL). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Mars Snackfood US?
- 4 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Mars Snackfood US?
- EIA-860M names M&M Mars Inc as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Mars Snackfood US LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — M&M Mars Inc here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Mars Snackfood US LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Mars Snackfood US still running?
- EIA-860M files it as "Out of service but expected to return to service in next calendar year" for 2026-07. Statuses change monthly, and this page follows the monthly release.