# Masspower

ISO-NE asset profile · https://askthegrid.com/assets/facilities/masspower

## Current generation inventory

EIA plant 10726 · Inventory reporting month: 2026-08.

- natural gas: 260.9 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -72.5225, 42.1575
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2022-12-07 03:03:08+00:00
- Map prepared: 2026-10-10T02:28:22.659601+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

MASSPOWER, at Indian Orchard in the Springfield, Massachusetts area, is a natural gas-fired power plant that Atlantic Power described in 2005 as 240 MW. Its three largest power purchase agreements were terminated in March 2005, leaving it largely a merchant facility. Vistra Corporation recruits operating technicians for the plant.

## Reviewed metrics

- **Nameplate capacity:** 260.9 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 10726 — plant-10726

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** Vistra Corporation

## Related parties

- **Operator:** Vistra Corporation — operator ([source](https://vistracorp.com))

## Sources

- [petersonschool.com](https://www.petersonschool.com/job-site/job-description/job-2025-07-16-10-51-29) — petersonschool.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/masspower
Website: [Vistra Corporation](https://vistracorp.com)

Source: Ask the Grid — https://askthegrid.com/