How big is Harrington?

Harrington has a reported capacity of 1,080 MW. Source: EIA Form 860M.

What kind of plant is Harrington?

Harrington is a Natural Gas Steam Turbine facility in Potter County, TX, participating in the SPP market.

Where is Harrington located?

Harrington is in Potter County, TX, inside the SPP balancing area.

Who operates Harrington?

Harrington is operated by Southwestern Public Service Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Harrington generate?

Harrington reported 2,175.8 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.

How does Harrington compare to other plants?

By capacity, Harrington ranks #24 of 257 operating plants of the same technology nationally. It ranks #5 of 32 in TX.

Ask the Grid

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Harrington

Southwestern Public Service CoPotter CountySPP

Harrington Generating Station is a gas-fired station in Potter County, Texas, associated with the SPP registry. The EIA plant baseline lists 1,080 MW of nameplate capacity. Xcel Energy's 2020 conversion announcement describes a 1,018-MW three-unit station and says the company planned to end coal use by January 2025. This profile keeps the registry's current fuel and nameplate data separate from the company's contemporaneous conversion announcement.

Harrington — 1,080 MW gas plant, Potter County, TX · Ask the Grid

Overview

Nameplate capacity: 1080 MW
Canonical EIA plant baseline.
Registry anchor: Plant 6193
plant-6193

Structured profile

Technology: Natural Gas Steam Turbine
Operator: Southwestern Public Service Co

Related assets

Similar plants ranked by technology, capacity, and distance.

Nichols

Natural Gas · 474.7 MW

Potter County

Same type1 mi away

Compare with this plant

Jones

Natural Gas · 860.4 MW

Lubbock County

Same typeComparable scale123 mi away

Compare with this plant

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
1	360 MW 339 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Jan 1976 Retirement: Dec 2036	Operating
2	360 MW 339 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Jan 1978 Retirement: Dec 2038	Operating
3	360 MW 340 MW summer	Natural Gas Steam Turbine Natural Gas · ST	Jan 1980 Retirement: Dec 2040	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 1,080 MW
National rank: #24
TX rank: #5

Monthly generation

Download CSV

Latest 12 months

2.18 TWh

Reported net generation

Latest report

Apr 2026

EIA-923 monthly filing

2025 capacity factor

21.3%

Using current reported nameplate capacity

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Nearby substations

HIFLD infrastructure inventory

HARRINGTON

IN SERVICE · 230 kV

0.2 km

NICHOLS

Commercial, land, and environmental record

Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.

Transactions and agreements

Fuel Conversion

Nov 10, 2020

Xcel Energy announced a plan to convert Harrington from coal to natural gas by Jan. 1, 2025.

newsroom.xcelenergy.com

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Parties and identifiers

OrganizationRoleBasis

plant:plant-6193Grid selectionCanonical asset page /assets/facilities/harrington-generating-station.

Reporting portfolio

EIA reporting entity

Southwestern Public Service Co

Entity 17718

Operating portfolio

10 plants

2 states

Reported capacity

5,424.5 MW

Conventional Steam Coal · Natural Gas Fired Combustion Turbine · Natural Gas Steam Turbine

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Jan 1976
Jan 1976
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
Jan 1978
Jan 1978
Generator enters operation

Largest reported plants in this portfolio
Largest reported plants	Capacity	State
Tolk	1,135.8 MW	TX
HarringtonCurrent	1,080 MW	TX
Jones	860.4 MW	TX
Sagamore Wind	522 MW	NM
Hale Community Wind Farm	478 MW	TX
Nichols	474.7 MW	TX
Cunningham	444.2 MW	NM
Maddox	212 MW	NM

Harrington

Harrington

Overview

Structured profile

Related assets

Nichols

Jones

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Related parties and identifiers

Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Riverside (OK)

Wilkes

Elk Station

Seminole (OK)

Sources

Common questions about Harrington

How big is Harrington?

What kind of plant is Harrington?

Where is Harrington located?

Who operates Harrington?

How much electricity does Harrington generate?

How does Harrington compare to other plants?

Co-located assets