We expect to activate the programs when the temperature is over 90 degrees. The programs also could be activated in emergencies when the integrity of the electricity system is in danger. An additional 50 megawatts could be saved this summer through a new program for NSP's larger customers. The Peak Day Partners program allows NSP to pay large retail customers for reducing their electricity use or for using their own generators when energy market prices are exceptionally high. More than 250,000 residential and 8,000 business customers are enrolled, for a potential electricity demand reduction of about 250 megawatts.
Cycling generally occurs between late morning and early evening.
Activated about 10 to 15 days in a typical summer, usually not on weekends or holidays. However, in extreme heat, Saver's Switch may be used for longer time periods and on weekends and holidays. Only customers with central air conditioning are eligible. Those customers also may enroll their electric water heaters. Customers in Minnesota, North Dakota and South Dakota who enroll their central air conditioners receive 15 percent discounts on the electric energy charges from June through September.