Watt

The output power of a one square meter solar panel is about one watt, so it is difficult to use solar power on a large scale at present.

The power delivered by a one square metre solar panel is approximately one watt. Therefore it is currently difficult to harvest solar energy on a grand scale.

What is a watt?

The watt is the International System of Units' standard unit of power.

Together, the five layers reduce exposure from the Sun from over 200 kilowatts of solar energy to a fraction of a watt.

The economical lamp of Philips needs just 18 watts to produce the same amount of light as a regular 75 watt light bulb.

The lamp consumed 480 watts giving an efficiency of about 15 lumens per watt.