What is the roundtrip efficiency of the powerwall

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Reference no: EM133368321

Questions:

1a) The Tesla Powerwall is a household-scale lithium ion battery. Its energy capacity is 13.5 kWh, which means that it can store enough energy to deliver 13.5 kWh of energy output. In terms of power capacity, it can deliver up to a maximum of 5 kW. How many hours of storage could it provide in a day if your power usage is 5 kW? How many hours of storage could it provide if you're only drawing on it for 2 kW of power? Assume that there is only 1 charge/discharge cycle per day.

1b) For every 1 kWh that you put into the powerwall during charging, you get 880 Wh of usable electricity out during discharge. What is the roundtrip efficiency of the powerwall?

Reference no: EM133368321

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