# Sapphire Sky Wind Energy LLC

MISO asset profile · https://askthegrid.com/assets/facilities/sapphire-sky-wind-energy-llc

## Current generation inventory

EIA plant 65316 · Inventory reporting month: 2026-08.

- wind: 259.8 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): -88.58455, 40.2945
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2025-12-22 00:43:19+00:00
- Map prepared: 2026-10-10T02:28:19.390740+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

Sapphire Sky Wind Energy LLC is a 259.8 MW onshore wind turbine plant in DeWitt County. Sapphire Sky Wind Energy Center is a roughly 250 MW wind project of 64 turbines developed by Invenergy, with Vestas supplying V150-4.2 MW and V136-3.45 MW turbines under a 235 MW order. In July 2021 WEC Energy Group agreed to acquire a 90% ownership interest for about $412 million. Its output was to be sold under a long-term power purchase agreement with an unnamed Fortune 100 technology company.

## Reviewed metrics

- **Nameplate capacity:** 259.8 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 65316 — plant-65316

## Facts

- **Technology:** Onshore Wind Turbine
- **Operator:** Invenergy Services LLC

## Related parties

- **O&M provider / equipment supplier:** Vestas — equipment_supplier ([source](https://www.vestas.com))

## Sources

- [ippjournal.com](https://ippjournal.com/update/invenergy-orders-vestas-turbines-for-235-mw-sapphire-sky-wind-energy-center-in-illinois) — ippjournal.com · public_source — Source retained for exact-record publication review.
- [renewableenergymagazine.com](https://www.renewableenergymagazine.com/wind/wec-energy-group-to-acquire-90-of-20210728) — renewableenergymagazine.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/sapphire-sky-wind-energy-llc
Website: [WEC Energy Group](https://www.wecenergygroup.com)

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