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2.9. Assume a home battery starts full, stores 6 kWh of energy, and has a peak discharge rate of 3 kW. Assume also that, if

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2.9. Assume a home battery starts full, stores 6 kWh of energy, and has a peak discharge rate of 3 kW. Assume also that, if either limit is exceeded, grid electricity, at $0.2/kWh, is used to provide the remaining energy or power. Suppose Sue charges her electric car, which draws 10 kW, for 3 hours. How much will she need to pay the utility for grid electricity

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