|
This webpage gives an explanation of the Kilo Watt Hour (KWh) – the unit of electricity used in FITs payments.
What Is A Kilo-Watt Hour (KWh)?
A KWh is one thousands watts for one hour.
Or the equivalent; for instance 2000 watts for 1/2 an hour or 500 watts for 2 hours.
Watts are units of power. Many different fields of engineering use watts but watts are most often used in an electrical context.
Why Use KWh?
A KWh measures electrical power over time. A KWh measures the quality of the solar panels; how hard the solar panels work over time.
Photo Voltaic (PV) solar panels produce electricity; electricity is described by current and voltage. The unit of measurement ‘Watt’ combines voltage and current:
watts = current x voltage
If a PV solar panel produces 5 amps of current at 250 volts:
watts = current x voltage watts = 5 x 250 = 1250 watts Divide by 1000 to get KW = 1250/1000 = 1.25 KW.
Breakdown Of The Term KWh
Kilo Watt Hour (KWh)
Kilo = 1 thousand.
Hour = a unit of time.
1 KWh = 1 thousand watts for one hour.
A KWh is a measure over time similar to 50 miles per hour, £10 per hour or £225 per week. |
|
Units Of Electricity KWh |
|
Home > PV Solar Panels > FITs (Feed In Tariff) Payments > Units Of Electricity – KWh |
|
Judge Electrical install and maintain solar panels using the trading name ‘York Solar Energy’ – for further information on solar panels visit the York Solar Energy FITs webpage. |
|
Term |
Number |
Unit |
Time period |
|
1 KWh |
1000 |
Watt |
Hour |
|
50 Miles per hour |
50 |
Miles |
Hour |
|
£10 per hour |
10 |
£’s |
Hour |
|
£225 per week |
225 |
£’s |
Week |
|
10 KWh |
10 x 1000 = 10,000 |
Watt |
Hour |