Pacific Power has proposed a 3 phase wind project consisting of 3 separate 99MW capacity wind farms. The first of these is the Glenrock Wind Energy Project located at a reclaimed Wyoming coal mine. The new wind farm will be located approximately 12 miles to the north of Glenrock in Converse County at the former Dave Johnston Coal Mine which was in operation from 1958 to 2000. The coal that was mined from the site was used to power the nearby Dave Johnston Power Plant – around 104 million tons of the stuff, in fact.

The Glenrock Wind Farm will be comprised of 66 General Electric wind turbines each with a 1.5MW capacity. The land that comprised the coal mine covers nearly 9 miles and a lot of reclamation work has been done to return the landscape to its pre-mine appearance. After the wind turbines for the wind project have been put in place the land will once again be contributing to the energy industry but this time it will still be available for livestock grazing and wildlife habitation.

The wind turbines will stand at a height of 80 meters. Facilities will also include transformers, underground electric cable, fiber optic communication cable, turbine access roads, four permanent 80-m meteorological (met) towers, and a supervisory control and data acquisition (SCADA) system.

Output from Glenrock will be delivered to a new 34.5/230-kilovolt (kV) substation and 230-kV transmission line that will interconnect with a new 230-kV substation near PacifiCorp’s Dave Johnston power plant. It is anticipated that a transmission line to connect the Projects to PacifiCorp’s transmission system will be built along PacifiCorp-owned property that was once occupied by a railroad line that extends approximately 15 miles from the site to the Dave Johnston power plant.

The project is to be designed and constructed with as little impact on the land as possible. Access and construction will be limited to designated areas. The company expects that construction will take 9 months with an average of around 130 workers on site.

Construction of the project will begin once necessary permits and approvals have been granted with the hope that the project will be completed around December 2008. The permitting project was initiated by Pacific Power on November 26 2007 when they lodged their Section 109 Permit Application for construction approval with the Wyoming Department of Environmental Quality.

In their proposal they Pacific Power have identified both the Glenrock and Rolling Hills projects that are expected to be completed in 2008. They also mention plans for a 3rd project which is also expected to have a 99MW capacity. This 3rd project has an expected completion date and is now known as the Seven Mile Hill Wind Energy Project.

Pacific Power is also in the process of constructing the Marengo II Wind Farm.