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Most solar hot water systems are fitted with gas or electric "boosters" that can also heat the water.

Describe why you think these are necessary.

DUE IN 2 HOURS PLEASE HELP!!

Respuesta :

cwayneu

Answer:

Solar uses energy from the sun, which is not available between dusk and dawn, or on very cloudy days.

Explanation:

nev28
To provide hot water on cloudy days or when demand exceeds supply, most solar water heaters come with a gas or electric booster. A gas booster usually produces fewer greenhouse gas emissions unless renewable electricity is used or the booster is a heat pump.

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