Suppose a utility generates electricity with a 36 percent efficient coal-fired power plant emitting the legal limit of 0.6 lb of SO2 per million Btus of heat into the plant. Suppose the utility encourages its customers to replace their 75-W incandescents with 18-W compact fluorescent lamps (CFLs) that produce the same amount of light. Over the 10,000-hr lifetime of a single CFL.

(a) How many kilowatt-hours of electricity would be saved?

(b) How many 2,000-lb tons of SO2 would not be emitted?

(c) If the utility can sell its rights to emit SO2 at $800 per ton (these are called "allowances"; see

Chapter 7), how much money could the utility earn by selling the SO2 saved by a single CFL?

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a Determine the amount of electricity energy saved Th... View the full answer