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| solar_power [2008-05-26 16:59] – nik | solar_power [2008-05-26 17:00] (current) – nik | ||
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| ie., you'd need less than 1% of Texas using off-the-shelf solar cells to equal the power generating capacity of the entire US grid. | ie., you'd need less than 1% of Texas using off-the-shelf solar cells to equal the power generating capacity of the entire US grid. | ||
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| + | or... | ||
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| Humanity uses around 1.5e13 W, and the Earth receives around 1.366e3 W per m² from the Sun (varies with year and month). Earth has a land area of around 1.5e8 km². Assuming 10% efficiency for photovoltaics, | Humanity uses around 1.5e13 W, and the Earth receives around 1.366e3 W per m² from the Sun (varies with year and month). Earth has a land area of around 1.5e8 km². Assuming 10% efficiency for photovoltaics, | ||