Eldorado Solar I

OperatingSolar

Ranked #10 of 388 Solar plants in IL#562 of 7790 nationally

150 MW Solar operating in Saline, IL — Midcontinent Independent Transmission System Operator, Inc..

EIAGEM

150 MW

Nameplate Capacity

Generators

unit

Solar Photovoltaic

Technology

2025

Operating Since

Location

Coordinates

37.8526, -88.4491

County

Saline, IL

Nearby Plants

Mammoth Central Solar Project
Solar300 MW · 1.9 km
Eldorado Solar II
Solar120 MW · 2.7 km
Meadow Springs Renewable Energy (Hybrid)
BESS300 MW · 24.4 km

Status

Latest milestonelargest project to date · 2025-09-25WSIL-TV · 2025-10-01

Ownership & Operator

Field	EIA	GEM	Wikidata
Operator	Sol Systems	Sol Systems	—
Owner(s)	Sol Systems	Sol Systems	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as Sol Systems

This entity is not yet in the GEM ownership database — chain unavailable.

DeveloperSol SystemsWSIL-TV · 2025-10-01

About

Eldorado Solar I is a 150 MW solar photovoltaic power plant located in Saline County, Illinois. The plant, which began operating in 2025, is owned and operated by Sol Systems. It utilizes a fixed-tilt solar tracking system. As of the latest available data, Eldorado Solar I generated 308,348 MWh annually, achieving a capacity factor of 23.5%.

The plant is connected to the Midcontinent Independent Transmission System Operator, Inc. (MISO) balancing authority and is situated within the SERC NERC region. Eldorado Solar I ranks as the 11th largest solar plant in Illinois out of 19, and 389th nationally out of 639.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Global Energy Monitor

Engineering & Generators

EPC contractorSOLV EnergySolar Power World · 2025-09-26

Grid Context

ISO/RTO

MISO

Market

ISO/RTO Member

NERC Region

SERC — SERC Reliability Corporation

Balancing Authority

Generation

11.9K MWh

Latest Month

308.3K MWh

Annual Generation

23.5%

Capacity Factor

Financial Data

EIA Avg CostEIA Construction Cost AveragesMEDIUM

2023

Construction CostOperating CostPricing & Revenue

$1,606/kW

Est. Construction Cost

Total estimated cost: $240.9M

Technology Average·Based on EIA averages — not plant-specific financial reports

Pricing & Market Data

HIGH confidence

Point of Interconnection

Nearest Substation

Eldorado M09 Substation

Substation Distance

< 10 km

Coord Source

OSM spatial

Market Position

ISO/RTO Market

MISO

LMP Node

AMIL.ELD150

Pricing Hub

ILLINOIS.HUB

Alt. Hub / Zone

INDIANA.HUB

Location Type

Generation Node

Node Source

EIA-860 direct report

News & Articles (3)Beta

Last updated 2026-03-26

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Eldorado Solar I — Plant Summary

Eldorado Solar I

Ownership Chain