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Energy is measured in Joules, while power is measured in Watts. One Watt is the same as I Joule per second. One Joule is one Watt running for one second.

The Sun's power falling on a 1 square meter area (facing the Sun exactly) is 1350 Watts, or 1350 Joules per second.

1 kilowatt-hour is 3.6 million Joules.

A typical 1.2 square meter solar panel produces 220 Watts of electric power when the full sunshine is squarely on it. On a cloudy day or without the sun's direct light shining on it the power is very much less, although a small amount of power is produced.

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The sun's energy is measured using what?

a radiometer


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What is the unit of measurement used to express the energy emitted per second?

Power. In SI, energy is measured in Joule, and power is measured to watts (= Joule per second).Power. In SI, energy is measured in Joule, and power is measured to watts (= Joule per second).Power. In SI, energy is measured in Joule, and power is measured to watts (= Joule per second).Power. In SI, energy is measured in Joule, and power is measured to watts (= Joule per second).


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What SI unit is energy measured in?

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What is the unit that energy is measured in?

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How does solar energy differ from heat energy?

Solar energy is energy from the sun that is converted into electricity using solar panels, while heat energy is the total amount of kinetic energy due to the motion of molecules in a substance. Solar energy harnesses the sun's rays to create electricity, while heat energy is a form of energy associated with the temperature of an object or substance.