Sunnyside Solar Energy Center — Plant Summary
- EIA Plant ID
- 68054
- Capacity
- 60 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries, Solar Photovoltaic
- Status
- Planned
- Location
- Dane, WI
- Operating Since
- —
- Generators
- 2
- Operator
- Madison Gas & Electric Co
- Parent Company
- MGE Energy
- Balancing Authority
- Midcontinent Independent Transmission System Operator, Inc..
- ISO/RTO
- MISO
- NERC Region
- MRO
Sunnyside Solar Energy Center
PlannedBESSSolarHybridGEM: pre-construction
Ranked #1 of 3 BESS plants in WI#385 of 837 nationally
60 MW Batteries (40 MW) + Solar Photovoltaic (20 MW) planned in Dane, WI — Midcontinent Independent Transmission System Operator, Inc..
EIAGEM
60 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
Planned: —
Planned Operation
Location
Coordinates
42.9852, -89.4361
County
Dane, WI
Nearby Plants
- O'Brien Solar FieldsSolar22.1 MW · 2.3 km
- Strix SolarSolar6 MW · 3.7 km
- FitchburgNatural Gas57.6 MW · 3.8 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Madison Gas & Electric Co | Madison Gas & Electric | — |
| Owner(s) | Madison Gas & Electric Co | MGE Energy | — |
| Status | Planned | pre-construction | — |
Ownership Chain
About
The Sunnyside Solar Energy Center is a 60 MW hybrid power plant located in Dane County, Wisconsin. It is owned by MGE Energy and operated by Madison Gas & Electric Co. The plant utilizes both solar photovoltaic technology and batteries, with two generators on site. Its primary fuel source is listed as MWH (megawatt hours).
Sunnyside Solar Energy Center operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority. The plant's solar arrays employ a fixed tilt configuration. It is ranked as the 5th largest solar facility out of 8 in the state of Wisconsin, and 581st out of 1205 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
13.8 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Oak Ridge Substation · 138 kV
Substation Distance
0.303 km
Operator
American Transmission Company
Coord Source
OSM spatial
Market Position
ISO/RTO Market
MISO
LMP Node
MGE.SSD_SLR2
Pricing Hub
MICHIGAN.HUB
Node Source
Curated node match
News & Articles (4)Beta
General
Morgan Stanley raised MGE Energy (MGEE) price target during utilities review
MGE Energy, Inc. (NASDAQ:MGEE) is included among the Dividend Kings List: Top 15 Stocks. On February 20, Morgan Stanley raised its price...
MSN·4 weeks ago
General
Morgan Stanley raised MGE Energy (MGEE) price target during utilities review
MGE Energy, Inc. (NASDAQ:MGEE) is included among the Dividend Kings List: Top 15 Stocks. On February 20, Morgan Stanley raised its price...
MSN·4 weeks ago
Industry·corporate
MGE’s 250-MW Darien Solar Energy Center Now Fully Operational, Advancing Clean Energy Goals
Discover how Madison Gas and Electric (MGE) is revolutionizing energy with the fully operational Darien Solar Energy Center in Wisconsin.
Madison Gas and Electric (operator)MGE (operator)
SolarQuarter·1 years ago
General
300 MW Badger Hollow Solar Farm, Wisconsin’s Largest Solar Project Now Operational
Madison Gas and Electric (MGE) and We Energies have completed the largest solar project in the history of Wisconsin.
SolarQuarter·2 years ago
Last updated 2026-03-26
View all articles