The Weston 4 power plant, of which Dairyland Power Cooperative has a 30 percent ownership interest, achieved commercial operation on June 30, 2008.
The newly constructed 595 MW power plant uses clean coal technology, a high efficiency boiler, low sulfur coal as fuel and features sophisticated emission controls to minimize environmental impacts. Wisconsin Public Service Corp., the majority owner, constructed and operates the plant which is located near Wausau, Wis.
Weston 4’s state-of-the-art design led it to be named the International Society of Automation (ISA) Electric Power Division's "2012 Best Facility" in recognition of the plant's innovative use of digital control systems and optimization software. Weston 4 was also designated Power Magazine’s 2008 Plant of the Year.
Construction on the $774 million project began in October 2004. The massive project required nearly 1,000 construction workers, who built the plant safely and on-schedule.