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259.8 MW Wind operating in DeWitt, IL — Midcontinent Independent Transmission System Operator, Inc..
259.8 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2023
Operating Since
Coordinates
40.2945, -88.5845
County
DeWitt, IL
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Invenergy Services LLC | WEC Energy Group | — |
| Owner(s) | Invenergy Services LLC, WEC Energy Group | WEC Energy Group | — |
| Status | Operating | operating | — |
Sapphire Sky Wind Energy LLC is a 259.8 MW wind power plant located in DeWitt County, Illinois. The facility began operating in 2023 and is owned by WEC Energy Group, with Invenergy Services LLC as the operator. The plant utilizes a single generator consisting of multiple onshore wind turbines. The wind turbines are Vestas V150-4.3 models, featuring a 150-meter rotor diameter and a hub height of 105 meters.
In its most recent year of operation, Sapphire Sky Wind Energy generated 925,776 MWh of electricity, achieving a capacity factor of 40.7%. The plant is interconnected to the Midcontinent Independent Transmission System Operator, Inc. (MISO) balancing authority and resides within the SERC NERC region. Sapphire Sky Wind Energy is the 7th largest wind farm in Illinois out of 44, and ranks 152nd nationally out of 734 wind plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
138.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
103.8K MWh
Latest Month
925.8K MWh
Annual Generation
40.7%
Capacity Factor
2023
$1,758/kW
Est. Construction Cost
Total estimated cost: $456.7M
Market Position
ISO/RTO Market
MISO
LMP Node
—
Pricing Hub
ILLINOIS.HUB
Node Source
OSM spatial match
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