FERC accepts interconnect for new turbine at Prairie Power’s Alsey plant

The Federal Energy Regulatory Commission on June 7 accepted the Midcontinent Independent System Operator‘s April 12 filing of a Generator Interconnection Agreement with Prairie Power Inc.–Generation Function as a power project developer, and Prairie Power Inc.–Transmission Function as the interconnecting transmission owner.

MISO has designated this as Project No. J291 in its interconnection queue. The power plant already had five gas-fired combustion turbines, with the new GIA covering a sixth, Alsey Unit 6, composed of a General Electric LM6000 model at 45 MW. The scheduled commercial operation date for the new Unit 6 under this interconnection agreement is June 1, 2016.

The Illinois Environmental Protection Agency in August 2015 issued a final air permit allowing Prairie Power Inc. to construct an additional combustion turbine generator at its existing peaking plant near Alsey, Ill.. This unit would be an existing unit that is to be refurbished and transported to the facility. This “new” unit would have a nominal capacity of 44 MWe under summer conditions and 48 MWe under winter conditions. This “new” unit is a GE combustion turbine, Model LM6000, with a nominal rated heat input capacity of 467 mmBtu/hour.

Prairie Power announced on Feb. 15 that it had selected ProEnergy Services LLC to provide the engineering, procurement and construction for a turnkey 42-MW combustion turbine generator addition at the Alsey Generation Station in Scott County, Illinois. The addition of the GE LM6000 PC Sprint unit will increase the capability of the Alsey Generation Station by 35%.

“This low cost, reconditioned electric generating unit utilizes natural gas which is an environmentally-preferred fuel source” said Dan Breden, Interim President and CEO, in the Feb. 15 statement. “We are pleased to be able to locate this new generating unit here in Central Illinois near our ten Members. This new Alsey unit builds upon our diversified portfolio of generation resources which today includes wind, solar, natural gas, fuel oil and coal to provide electricity to our ten Members at a stable and attractive cost.”

“In addition to the work involving the new unit, we will be providing gas turbine Control system retrofits at the same site for three Westinghouse W251s and two GE LM2500s,” added ProEnergy CEO Jeff Canon.  “We have done field service work for Prairie Power in the past, and we are honored to be given the opportunity to work with them on Controls upgrades and a unit addition at the Alsey Generation Station.”

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.