In Barnstable County, Massachusetts (MA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names Madison Energy Investments LLC 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 118 Echo LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Madison Energy Investments LLC 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 "118 Echo LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is 118 Echo still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

118 Echo

118 Echo is a 1 MW solar farm in Barnstable County, Massachusetts, operated by Madison Energy Investments LLC. EIA-860M lists 1 generating unit here, inside ISO New England. Its unit entered service in 2023.

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: 1 MW; 1 MW net summer
Generating units: 1
In service: 2023
EIA plant ID: 68390

Where it is

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County: Barnstable County, Massachusetts
Coordinates: 41.655, -70.5031
Balancing authority: ISNE
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Madison Energy Investments LLC
Primary energy source: Solar
Technologies: Solar Photovoltaic
Status: Operating

Every plant Madison Energy Investments LLC reports to EIA →

118 Echo: FAQ

Where is 118 Echo?: In Barnstable County, Massachusetts (MA). 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 118 Echo?: 1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns 118 Echo?: EIA-860M names Madison Energy Investments LLC 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 118 Echo LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Madison Energy Investments LLC 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 "118 Echo LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is 118 Echo still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.