[Calculations]

1 kWh = 1000W of power used in one hour.
This is commonly termed as 1 unit of electrical power.

Calculations are based upon the average annual consumption of electricity from a home in Scotland being from information provided by Scottish and Southern

Gas heated House = 19,070 kWh gas + 3,880 kWh electricity

Electrical Heated House = 10,127 kWh

The first step is to calculate the electricity produced in a year.

Maximum Electricity Produced per annum (kWh) = rated capacity(kW) * 8760(hours in a year)

This provides the total quantity produced if the energy source was operating at maximum output throughout the 8760 hours in the year. We need to assume a capacity factor (CF) for the operation of the sources throughout the year.

Electricity Produced per annum (kWh) = rated capacity(kW) * 8760(hours in a year) * CF

To determine the number of homes that this energy will be able to supply electricity to, the value is divided by the average annual consumption of electricity in a home.

Number of Homes = Electricity Produced per annum / Annual household consumption

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