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The most compelling advantage of bidirectional charging is its cost-effectiveness. Traditional home batteries typically offer around 10 kilowatt-hours (kWh) of storage. In contrast, many electric vehicle batteries can store between 75 and 200 kWh. This substantial difference makes using an EV battery as a home energy storage solution a far more economical option.
On average, U.S. homes consume about 30 kWh of energy daily, meaning an electric vehicle like the Ford F-150 Lightning, with its 100 kWh battery, could power an entire home for over three days on a full charge alone. By integrating an EV battery with a solar power system, homeowners could achieve total backup power for days on end, relying solely on solar energy when conditions permit.