Sun Valley Project
Alliant Energy built the new Sun Valley Substation in the vicinity of Fish Hatchery Road and County Hwy. CC in the town of Oregon. ATC built a new 69-kV transmission line to connect to the existing 69-kilovolt transmission system that serves the area and feed the Sun Valley Substation.
Project need
When a local utility adds a new substation to an area to meet increased demand for electricity, it is necessary for the substation to be connected to a transmission line. This connection allows the utility to reliably deliver electricity to its local distribution system. Electric usage in the Oregon, Wisconsin, area has experience significant growth in recent years. New development planned for the west side of Oregon, along with a proposed 230-acre commercial/industrial park near the Oregon/Fitchburg border and the expansion of Highway 14 south of Oregon, will lead to increased electric consumption. With this growth, the electric system in the area will reach full capacity and lacks backup capability in case of an outage. The rural area west of Oregon will become increasingly vulnerable to low voltages as Oregon and Verona develop and use the electrical resources from existing substations in those communities.
69-kV with distribution underbuild
69-kV without underbuild
| Communities benefitted: | Town of Oregon and Fitchburg |
| Line length: | Approximately 3 miles |
| Voltage: | 69,000 volts |
| Final cost: | $2.9 million |
| End points: | Sun Valley Substation, in the town of Oregon and a tap from an existing 69-kilovolt transmission line located along Adams Road |
| Public open houses: | July-October 2007 |
| Apply for local permits: | Winter 2008 |
| Easement negotiations: | Summer/Fall 2008-Spring 2009 |
| Began construction: | Fall 2009 |
| In-service date: | February 2010 |