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vvnat is roc <br />• Neither a 250 kw generator nor a 450 kw generator (required to maintain <br />environmental conditions) since the installed cost of the small generator <br />exceeds $500,000. <br />• An integrated manual transfer switch with distribution for connection of a <br />portable 250 kw generator, as installed cost exceeded $250,000. <br />• Additional insulation in wall cavities. It was estimated that, due to the amount of <br />wood trim and detailing, opening the walls, replacing the insulation with foam <br />to increase the R value from 19 to 30 would cost over $850,000, but yield only <br />$47/yr in savings. <br />• Similarly, adding additional batt insulation above the ceiling to increase R - <br />value from 30 to 50 would cost approximately $50,000 and yield only $10/yr in <br />savings. <br />