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Photovoltaics: Difference between revisions
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===Intermittency=== | ===Intermittency=== | ||
The sun only shines during the day. Solar electricity{{x|if used as a main energy source}}would need ''at least'' enough [[energy storage]] to cover a full 24-hour cycle - or maybe a bit more | The sun only shines during the day. Solar electricity{{x|if used as a main energy source}}would need ''at least'' enough [[energy storage]] to cover a full 24-hour cycle - or maybe a bit more. | ||
Energy storage is an | Cloudy & overcast days still produce a generous amount of power, although slightly less. Heavy rain can be an exception. | ||
Energy storage is an [[The great battery challenge|ongoing challenge]]. Best candidates for solar might be [[iron-redox flow batteries]] or [[sodium-sulfur batteries]]. | |||
===Rare metals=== | ===Rare metals=== | ||