This solar calculator can be used to provide a reasonable estimate of the likely costs and payback figures for domestic installations of different sizes of solar PV system from our Ultra Efficient range of solar PV installations using the Sanyo HIT H & N series hybrid panels & SMA Sunnyboy inverters.

Please click here to get prices and calculations for our High Spec system, or here for our Value system, or here for non-domestic / commercial solar energy systems.

*Updated for 2012 prices inc 5% VAT & the proposed 21p Feed In Tariff rate*.

Instructions
To specify the location of your proposed installation, simply click on the 'change our assumptions button' and type in your postcode. If you have a particularly steep or shallow roof, or want to alter the assumptions made about the average inflation rate and energy price increase used to calculate the financial performance, you may also alter these settings here.

Please note that we use a slightly different method for calculating performance and long term performance in our actual quotes so your final figures may vary slightly from those shown in this calculator tool.