UTILITY · INVESTOR-OWNED · WI

Madison Gas and Electric

SAVE

Wisconsin utility; co-owner of the Columbia Energy Storage Project.Owned by MGE Energy (not separately listed)

Projects

0 operating

Buys from

20 MW of capacity

Funds

projects with its money

Money in

—

project-specific, disclosed

Builds

as developer

Activity timeline

Open in the Brief calendar →

Coming up

~2027
PROJECT · COLUMBIA ENERGY STORAGE PROJECTConstruction complete (target)
Town of Pacific, Columbia County, WI
alliantenergy.com →+ THESIS

Jul 18, 2025
PROJECT · COLUMBIA ENERGY STORAGE PROJECTWisconsin PSC approves the project
Town of Pacific, Columbia County, WI
alliantenergy.com →+ THESIS
Sep 26, 2023
FUNDING · COLUMBIA ENERGY STORAGE PROJECTGrant: US Department of Energy (Office of Clean Energy Demonstrations)$30M
Awarded · About $30M
dailyenergyinsider.com →+ THESIS

Pipeline

1 PROJECTS

Columbia Energy Storage ProjectEnergy Dome · Long-duration storage · Wisconsin · 20 MW · 200 MWhPERMITTED~2027

Timeline

Recent

Jul 18, 2025Columbia Energy Storage Project: Wisconsin PSC approves the project

Coming up

~2027 · AHEADColumbia Energy Storage Project: Construction complete (target)

Developers it backs

Energy Dome

Other buyers on these projects

Alliant Energy Wisconsin Public Service

Places

Wisconsin

Dependencies

SUPPLY CHAIN →

Policy that applies

45Y / 48E: all other clean power and storageACTIVE

LOADING…

Madison Gas and Electric

Activity timeline

Pipeline

Timeline

Related

Dependencies

Madison Gas and Electric

Activity timeline

Pipeline

Timeline

Related

Dependencies