# GSG LLC

PJM asset profile · https://askthegrid.com/assets/facilities/gsg-llc

## Current generation inventory

EIA plant 56450 · Inventory reporting month: 2026-08.

- wind: 80 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: 2026-10-10T22:49:53.020309+00:00
- Filed coordinate (longitude, latitude): -89.17306, 41.643611
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2023-12-12 14:03:17+00:00
- Map prepared: 2026-10-10T23:05:22.061608+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

GSG LLC is a 80 MW onshore wind turbine plant in Lee County. GSG Wind is an 80 MW wind project in Lee and LaSalle Counties, Illinois, owned by Leeward Renewable Energy. Developed by Leeward, it became operational in 2007 with 40 turbines across more than 3,000 acres. A repowering announced complete in January 2024 decommissioned those turbines and built 26 new GE Vernova turbines, generating 50 percent more energy with a smaller footprint. Verizon Communications signed a renewable energy purchase agreement for the project in January 2022.

## Reviewed metrics

- **Nameplate capacity:** 80 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 56450 — plant-56450

## Facts

- **Technology:** Onshore Wind Turbine
- **Operator:** Leeward Asset Management, LLC

## Related parties

- **Owner / developer:** Leeward Renewable Energy — owner ([source](https://leewardenergy.com))
- **Offtaker:** Verizon Communications — offtaker ([source](https://www.verizon.com))
- **Equipment supplier:** GE Vernova — equipment supplier ([source](https://www.gevernova.com))

## Sources

- [windtech-international.com](https://www.windtech-international.com/projects-and-contracts/leeward-renewable-energy-completes-gsg-wind-repower) — windtech-international.com · public_source — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/gsg-llc
Website: [Leeward Renewable Energy](https://leewardenergy.com)

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