A percentage is always a comparison of two numbers. It is not clear what two numbers (amounts of energy) you want to compare in this case.
Reducing energy use is called energy conservation and efficiency is the percentage of energy that is actually used to perform work the rest of energy that is '' lost '' to the surrondings.
It depends on the efficiency of the machine. No machine is perfect and there are always losses and waste. Usually the losses are a greater percentage than the useful energy.
85.7%
69%
I would assume it means that the more efficient it is, the less energy it intakes and the more efficient the system is at retaining the energy it intakes.
Only about 15% of Canadians use solar energy. Nikka.
27
59%
60
im not saying
Actually you can't. At least, if you use the gasoline in a car, a large percentage of the energy is wasted.
90% of athletes use energy drinks because they essentially rely on it to improve their performane of which in some cases, it does.
the average house uses 12, kw of energy a day
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The sun sends more energy to the earth every day then humans currently consume. The problem is that we are unable to capture more than a small percentage of this energy.
You can use whatever energy is left over from the day
Cooking and heating water, for example, use energy every day.