How to save electricity at home?

Before you build or purchase a solar-energy system you must have an idea of how much useful electricity can be generated from it. It depends from cell material to size and the incident solar radiation. By considering only the general factors we can estimate it easily. How Energy is Measured? The energy is usually measured in kilowatt-hour (kWh) it is equivalent to one kilowatt of power expended per hour of time. The kilowatt-hour is most commonly used billing unit of energy delivered by electric Read more [...]