Solar's hot, even when the sun is not

On the cloudiest winter's day in Melbourne, a 15kW rooftop PV system can still produce more power than a household's daily demand. And with the race on to improve efficiency, things can only get better.

On the cloudiest day in the gloomiest weather, when I check my solar system I find it is still generating and exporting clean renewable energy into the grid. My solar system, like all rooftop solar systems, generates even when it's cloudy. That's because solar technology is able to produce electricity under diffuse light conditions.

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