Mendota Hills, LLC — Plant Summary
- EIA Plant ID
- 56160
- Capacity
- 76.2 MW
- Primary Fuel
- Wind
- Technology
- Onshore Wind Turbine
- Status
- Operating
- Location
- Lee, IL
- Operating Since
- 2003
- Generators
- 1
- Operator
- Leeward Asset Management, LLC
- Parent Company
- —
- Annual Generation
- 263,731 MWh
- Capacity Factor
- 39.5%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Mendota Hills, LLC
OperatingWindGEM: retired
Ranked #51 of 61 Wind plants in IL#842 of 1442 nationally
76.2 MW Wind operating in Lee, IL — PJM Interconnection, LLC
EIAGEMWD
76.2 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2003
Operating Since
Location
Coordinates
41.7194, -89.0492
County
Lee, IL
Nearby Plants
- Shady Oaks Wind 2Wind108.3 MW · 5.9 km
- Shady Oaks Wind FarmWind109.5 MW · 7.4 km
- Steward Creek Solar Phase 1Solar1200 MW · 11.6 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Leeward Asset Management, LLC | Leeward Energy [100%] | — |
| Owner(s) | Leeward Asset Management, LLC | Leeward Energy [100%] | — |
| Status | Operating | retired | — |
Ownership Chain
GEM identifies the owner as Leeward Energy [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
The Mendota Hills Wind Farm is a wind farm in Lee County, Illinois near the village of Paw Paw. It operates 29 wind turbines. Each wind turbine stands 214 ft tall and has three 85 ft long blades. The wind farm was constructed from June 2003 to November 24, 2003. Mendota Hills was the first utility-scale wind farm in the state of Illinois.
Read more on WikipediaMendota Hills, LLC is a 76.2 MW wind power plant located in Lee County, Illinois. The plant began operating in 2003 and is owned and operated by Leeward Asset Management, LLC. It consists of a single generator utilizing onshore wind turbine technology. The facility is interconnected to the grid within the PJM Interconnection, LLC balancing authority and the RFC NERC region.
The plant's wind turbines have a hub height of 84 meters and a rotor diameter of 126 meters. The turbines were manufactured by Siemens Gamesa Renewable Energy, model SG-2.625-126. In the most recent year of data, Mendota Hills generated 263,731 MWh of electricity, achieving a capacity factor of 39.5%. The plant ranks 50th out of 59 power plants in Illinois and 834th out of 1424 plants nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
26.6K MWh
Latest Month
263.7K MWh
Annual Generation
39.5%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
PJM
LMP Node
979 MEND34.5 KV MENDOTWF
Pricing Hub
N ILLINOIS HUB
Location Type
Generation Node
Node Source
Curated node match
News & Articles (1)Beta
Industry·technology
Repowering wind turbines adds generating capacity at existing sites
Repowering older wind turbines, which involves replacing aging turbines or components, is becoming more common in the United States as the...
U.S. Energy Information Administration (EIA) (.gov)·8 years ago
Last updated 2026-03-26
View all articles