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MAIN Demand Growing, But Supplies Adequate

MAIN Demand Growing, But Supplies Adequate

In a report released yesterday, the Mid-America Interconnected Network (MAIN) said it expects a new peak for power demand in the midwestern NERC region this summer but power supplies should be "significantly improved" compared to the past two summers. The MAIN study forecasts a peak demand of 48,157 MW this summer, compared to 46,824 MW in 1998.

"Although peak demand for power is anticipated to be about 2% higher this year than last, we believe reliability levels will be significantly higher than in 1997 and 1998," said Richard Bulley, executive director of MAIN. "The improved outlook is because all nuclear plants within MAIN are expected to be in service this summer, and about 1,300 MW of generation will be added in various locations throughout the region." The study also pointed to transmission system upgrades and improved procedures that will increase the region's ability to import power from other regions.

The major system additions and improvements include the LaSalle Nuclear Station. Both of LaSalle units (2,080 MW) were unavailable for much of the summer of 1997. Unit 1 returned to service in August 1998 and has been in normal operation since. Unit 2 returned to service this week. The Clinton Nuclear Station (930 MW) has been unavailable since September 1996, but is anticipated to be available this summer. Illinois Power has reactivated an oil-fired power plant at Havana, adding 238 MW of capacity. ComEd is installing 213 MW of portable, temporary, internal combustion generating capacity at seven locations on its system. New generation from independent power producers in the ComEd service territory is expected to contribute an additional 850 MW in 1999, according to the report.

Illinois Power and Soyland Power Cooperative are installing combustion turbine units that will add about 275 MW of generation to the region. The location of some of the units will improve the ability to import power from the East. About 300 MW of capacity will be available in Wisconsin from new units and increased capacity at existing units. In Missouri, about 100 MW of increased capacity at the Taum Sauk Plant will be available.

In addition, new autotransformers are being installed in Upper Michigan, Wisconsin and Illinois that will improve the adequacy of bulk power service to local load areas. And transmission line upgrades and improvements in northern Wisconsin, Illinois and Missouri will improve the ability to transfer power throughout the system, the study said.

MAIN is one of 10 regional reliability councils under the North American Electric Reliability Council, dedicated to the operation of the region's electric transmission system. Member companies include 14 electric utilities that serve parts of Michigan, Wisconsin, Illinois and Missouri, along with 40 other organizations involved in regional energy issues. A copy of the reliability assessment can be downloaded from MAIN's world-wide web page, http://www.maininc.org/files/tasg99s.pdf.

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ISSN © 2577-9877 | ISSN © 1532-1231
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