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CWLP's generating capacity is provided by four coal-fired steam turbine generators (with a total nameplate rating of 572 megawatts [MW]), one dual-fuel natural gas- and oil-fired combustion turbine (with a total nameplate rating of 115 MW), and two oil-fired combustion turbines (with a total nameplate rating of 31 MW. Based on nameplate ratings, CWLP's total summer maximum net generating capability is 718 MW (although testing in 2015 showed the actual total capacity at that time to be 690 MW.)

The start-up of the 200-MW Dallman 4 generating station in Summer 2009 allowed CWLP to stop using the last two operating 1960s-vintage generating units at Lakeside Power Station, which was originally built in 1935 on the shore of the then newly constructed Lake Springfield.

In addition to the power self-generated by CWLP, the utility contracts for wind power from NextEra Energy Resources (formerly FPL Energy).

Click for Information on 2015 Generation Facts and Figures (click to open)

In 2015, the utility generated1,944,686.4 net megawatt-hours (MWH) of electricity (a 17.39% decrease from 2014) and had system purchases of 683,319.7 MWH, for a total system net input of2,628,006.1 MWH. This served the native energy requirement of 1,757,186.8 MW, as well as system wholesale sales of 872,746.2 MWH.

Of the 683,319.7 MWH purchased by CWLP in 2015, 397,134.9 MWH was in the form of wind energy purchased from the Hancock County and Crystal Lake wind farms in Iowa.

In 2015, CWLP's four coal-fired units consumed a total of 1,063,268 tons of coal, 100% of which was mined in Illinois. All generating units consumed 259,255 gallons of fuel oil and nearly 3,035,314 dekatherms of natural gas.

During the calendar year, Dallman Unit 4 represented 44.86% of CWLP's total net generation; Dallman Unit 3 represented 38.60% of total net generation; and Dallman Units 1 and 2 combined, represented 15.44% of total net generation.

In 2015, CWLP's summer peak demand was 386 MW, set on Monday, July 13,, between 4 p.m. and 5 p.m., when the outdoor temperature was 92° F and the heat index was 109.7° F. This represents a 14.41% reduction from the  record peak of 451 MW set in July 2006. The overall summer of 2015 was average, with 929 cooling degree days (CDD) versus a norm of 866 CDD. 

During Winter 2015/2016, CWLP's peak demand was 283 MW (12.8% below the record winter peak of 324.63, which was set on January 6, 2014). The Winter 2015/2016 peak demand occurred on January 18, 2016 at 8 p.m., when the temperature was 11° F and the wind chill was 1°F.

Independent power generators interested in interconnecting to CWLP's transmission system can link to information needed to assist them in this process from our Interconnection Information page.

 

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