Tacoma Power has deployed 28 of what will be 30 Caterpillar 3516B-powered diesel generator sets as a baseload generating source. The gen-sets, rated 1.6 MW each, have been supplied with SCR [NO.sub.x] control.
Faced with the potential for extremely high wholesale electric energy prices this summer, the utility is using the generator sets as a hedge against up-side energy price risk. The engines are permitted as a temporary plant to operate for one year. Operation of any of the units beyond January 30, 2002 at the current location would require a new air permit.
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