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World of Engineering
engineers.bsky.social
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☀️ What is a payback period for residential solar?
10,000 kWh per year home requires 6 kW solar system with cost about $2.85 per watt, or $17,100 ($11,970 after incentives).
Making about 10,200 kWh per year (in CA) can save $2,450 in one year.
Thus payback period is ~ 5 years.
2025-08-27T19:37:45.607Z