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Monarch Grid Battery Storage Facility

Sector: Energy Storage • Location: Prairie Grove, Illinois, United States

Source: Shaw Local

Project
Proposed

Eolian Energy is proposing to build a 600-megawatt battery energy storage facility called the Monarch Grid on about 52 acres off Behan Road near Snap-On Tools in Prairie Grove, McHenry County. The facility will store excess power from the electrical grid and discharge it back when needed, using lithium-ion batteries with lithium iron phosphate chemistry. It aims to connect to a nearby ComEd substa

Status
Prospective
Sector
Energy Storage, Metal, Electric Vehicles (EVs), Wind, Road, Solar, Fertilizers, Power Generation (CCGT), Steel, Automotive, Residential, Commercial
Location
Prairie Grove, Illinois, United States of America
Updated
22 Jul 2026
Source
Shaw Local

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The project “Monarch Grid Battery Storage Facility” is an infrastructure initiative in the Energy Storage sector, located in Prairie Grove, Illinois, United States. Taiyo aggregates data on it from Shaw Local.

Participants

Not available for this record.

Status

Original status

proposed

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

Eolian Energy is proposing to build a 600-megawatt battery energy storage facility called the Monarch Grid on about 52 acres off Behan Road near Snap-On Tools in Prairie Grove, McHenry County. The facility will store excess power from the electrical grid and discharge it back when needed, using lithium-ion batteries with lithium iron phosphate chemistry. It aims to connect to a nearby ComEd substation and improve grid reliability by integrating solar, wind, and electric vehicle charging.

Original sector

Energy

Location

Country

United States of America (USA)

State

Illinois

City

Prairie Grove

Source

Source

Shaw Local

URL

More Details

Record type

Project

Sector

Energy Storage, Metal, Electric Vehicles (EVs), Wind, Road, Solar, Fertilizers, Power Generation (CCGT), Steel, Automotive, Residential, Commercial

Article published date

2025-12-14

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