Dane County has experienced tremendous growth in the past two decades. In fact, in some rural areas of the County, electricity usage is growing at a rate three to four times the statewide average. The electric transmission system requires upgrades and expansion to accommodate this increase in usage.

Projects approved or under construction

Rockdale-West Middleton transmission line
The Wisconsin PSC approved a new 345-kilovolt line to connect the Rockdale Substation located near Christiana with the West Middleton Substation. More

Fitchburg-Verona electric system upgrade
The 69-kilovolt lines that serve the area currently are used to near-maximum capacity and cannot support the electricity needed for future growth. ATC is constructing a new 138-kV transmission line to connect a new substation in Fitchburg to an existing substation in Verona. More

Sun Valley Project
A new 69-kilovolt transmission line is needed to connect to a proposed Alliant Energy Substation in the vicinity of Fish Hatchery Road and County Hwy. CC in the town of Oregon. The line will run south approximately 3 miles from from an existing 69-kilovolt transmission line located along Adams Road to the proposed substation site. More

Completed projects

North Madison-Waunakee (Huiskamp) upgrade - placed in service April 2008

ATC completed construction on new 138-kilovolt transmission line from the North Madison Substation in the Town of Vienna to the Huiskamp Substation in the Town of Westport. The line provides a critical reinforcement to the area's electric system.

Femrite-Sprecher transmission line project - placed in service spring 2007

ATC completed constructon of approximately four miles of new 138-kilovolt transmission line to connect the Sprecher Substation, located near the Sprecher Rd / CTH BB intersection, with Femrite Substation, located on Femrite Road near the I-90 / USH 12/18 interchange.

Columbia-North Madison transmission line - completed May 2006

ATC increased the voltage from 138 kilovolts to 345 kilovolts on an existing transmission line running from the North Madison Substation west of DeForest to the Columbia Substation located near Alliant's Columbia Power Plant outside of Portage.

Future projects
For information on future projects planned for the Dane County area, please visit our 10 Year Assessment website at www.atc10yearplan.com.