Solar electricity calculator

*** Important Note ***
The Feed In Tariff rates are currently under review by the government. The figures shown by this calculator are likely to only apply to installations prior to 12 December 2011. Any installations after this may be affected by the review. The review is due to be completed on 23 December 2011. We will update the calculator with the latest figures when these are released by the government after the review is completed. For more details of the review see the DECC website.

Please enter details of your requirements below and then click the 'Calculate' button. For help with any item just hover over it with your mouse. Note that this calculator applies to domestic installations only. For information regarding larger corporate installations please contact us by phone or email. The calculation assumes you have a single suitable roof. If you have more than one suitable roof you can still get a good guide from the calculator by selecting total space available from all your roofs and selecting average tllt, orientation and overshading.

Country: United Kingdom Tilt of collector(s): Please Select Horizontal 30 degrees 45 degrees 60 degrees Vertical Orientation of collector(s): Please Select South SE/SW E/W Overshading: Please Select None or very little (<20% of sky blocked by obstacles) Modest (20-60% of sky blocked by obstacles) Significant (60-80% of sky blocked by obstacles Heavy (>80% of sky blocked by obstacles Available space for solar panels: Please Select < 15 sq metres (162 sq feet) 15-19 sq metres (162-215 sq feet) 20-24 sq metres (216-269 sq feet) 25-29 sq metres (270-322 sq feet) 30-34 sq metres (323-376 sq feet) >34 sq metres (376 sq feet) Current cost of electricity (pence per kWh): pence per kWh Expected annual increase in electricity price: % Expected annual increase in RPI: % Proportion of generated electricity which is exported: 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%