For Release: 04/11/2014

Wisconsin Public Service Makes Decision on Weston Units 1 and 2

Green Bay, WI - Wisconsin Public Service Corporation (WPS), a subsidiary of Integrys Energy Group, Inc. (NYSE: TEG), has filed with the MidContinent Independent System Operator (MISO) to retire Weston 1 (60 megawatts), an older coal-fired electric generating unit at the Weston Plant near Wausau. In addition, WPS has decided to continue operating Weston 2 (75 megawatts) but switch fuel from coal to natural gas. If approved, Weston 1 will be retired by June 2015 and Weston 2 will switch fuels in 2015. Weston 2 was initially constructed with the capability to use natural gas as fuel.

The units were built in 1954 and 1960, respectively . Weston units 3&4, built in 1981 and 2008, respectively, will continue to operate at the plant, generating more than 980 megawatts. Also operating at the plant, when needed, are two natural gas/fuel oil peaking turbines capable of generating around 72 megawatts.

Earlier, WPS announced an agreement with the U.S. Environmental Protection Agency that called for Weston units 1 & 2 and Pulliam Plant (Green Bay) units 5 & 6 to be repowered, refueled, or retired. WPS previously announced the retirement of Pulliam 5 & 6 by June 2015, leaving two of eight generation units still operating at the plant.

Current electric market conditions include generation from more efficient and larger coal and natural gas units reducing the opportunities for Weston 1, and Pulliam 5 & 6 to operate.

While the retirement of W1 will require fewer employees at the complex, the full-time employees will shift to other open positions at Weston.

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