Generate electricity, generate income!

Figures assume the solar energy system(s) are retro-fitted to an existing property up to March 2012. Figures are correct as at 23.01.12. Feed-in Tariff rates payable to the homeowner over a 25 year period by the utility companies are linked to the Retail Price Index (RPI) and will automatically increase with RPI every year. Figures assume a Retail Index Inflation of 4.5%.

Feed-in Tariff generation rate is 43.3p/kWh until 11/12/2011 and 21p/kWh after 12/12/2011. Feed-in Tariff export rate is 3.1 p/kWh until March 2012. Electricity price, based on domestic use in 2011, is 14.4p. Electricity home use is 25%. 75% of solar electricity is exported to the grid.

The performance of a solar PV system varies according to the amount of solar radiation in a given location and in a given year. The estimates generated from the Energy Saving Trust’s Solar Energy Calculator are based on the best possible information available, and not to be considered as a guarantee of performance.

Consideration is given to latest electricity prices, Feed-in Tariff rates and statistics related to equipment performance and electricity home use. Calculations assume the solar access to your roof is completely unobstructed by trees, other buildings and roof protrusions. System abd maintenance costs have not been included in these calculations.

Total losses (e.g. system and inverter losses) is 23%. System power performance decline over 25 years is 20% (i.e. 80% power performance after 25 years). Grid electricty carbon factor (2011) is 0.521 kgCO2/kWh. Performance of solar electric panels are based on UK temperatures. Average energy losses are estimated at 10% compared to standard testing conditions (STCs).

For further details visit the Energy Saving Trust website: www.energysavingtrust.org.uk.