Emerald Marshfields, LLC

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Power plant · Solar

Key facts

Power plant · Solar Operating

Capacity: Capacity: sourceEIA-860M · 30 Oct 2026Open licenseMW

Commissioned: 2022
Net generation, 2025: 2,308 MWh
Grid: 23 kV to NSTAR Electric Company (ISNE)
Location: Plymouth County, Massachusetts
Operated by: Emerald Marshfield, LLC

Output

Net generation MWh by year, 2022 to 2025

Operations detail

Details

Who’s behind it

Owner: EG1 PKI Holdings, LLC

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Technology: Solar source: “Solar Photovoltaic”
Age: 4 years since 2022

All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Gem	Unit ids G100000838500 Location id L100000832883 Eia plant ids 66427
Grid	Nerc region NPCC Report year 2025 Grid voltage kv 22.80 Transmission owner NSTAR Electric Company Balancing authority code ISNE Balancing authority name ISO New England Inc.
Fuel burned (MMBtu), 2025	7,876
Capacity factor, 2025	0.139
Net generation (MWh), 2025	2,308
Balancing authority code	ISNE

Solar array

Array area (acres): 3.4
AC capacity (MW): 1.9
DC capacity (MW): 2
Site type: Greenfield
Began operating: 2022

Source USPVDB

Source

U.S. Large-Scale Solar Photovoltaic DatabaseOpen license · retrieved 25 Oct 2026Map services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb

Attribution

Ownership

2 companies

Companies with an ownership or operating interest in this asset.
Company	Role	Share	As of	Source
Emerald Marshfield, LLC	Operator			EIA-860M
EG1 PKI Holdings, LLC	Owner	100.0%	31 Dec 2025	EIA-860

Timeline

2022 In service · EIA-860M

Sources

6 sources

Sources EIA-860M · GEM · USPVDB · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Sources

EIA-860M Preliminary Monthly Electric Generator InventoryOpen license · retrieved 4 Nov 2026
Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Open license, with credit · retrieved 26 Oct 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
U.S. Large-Scale Solar Photovoltaic Database (USPVDB) — USGS and LBNL; one row per facility with its array footprintOpen license · retrieved 25 Oct 2026Map services and data are available from Large-Scale Solar Photovoltaic Database, provided by the U.S. Geological Survey and Lawrence Berkeley National Laboratory via https://energy.usgs.gov/uspvdb
EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Open license · retrieved 1 Nov 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory
EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules

Every source and license · Attribution

View at source