Solar PV (Photovoltaic) FeedIn Tariff Calculator
About these figures
 Our calculations are unbiased representations of potential payback from Solar PV. To firm up these figures you should arrange a quote from an MCS certified company, this is a requirement of the Feedin Tariff.
 For free, we can contact up to 3 certified companies on your behalf to arrange a quote.
More information about the FeedIn Tariff
Based on the details above we estimate your annual income and overall investment payback to be as follows:
Investment in 4.00kWp System: *  £ 6,944.91  
First Year:  Income from FeedIn Generation Tariff @ 14.38p/kWh:  £ 480.83 
Income from exporting energy @ 4.77p/kWh:  £ 79.75  
Electricity Saving:  £ 240.75  
Total Benefit:  £ 801.33  
Payback Time:  7y 7m  
Total Profit Over 20 years:  £ 16,407.88 11.81 % per year (6.06% AER) 

* Current prices for this system may vary from £ 7,205.00 to £ 8,125.00 for this type of installation so it is important to Compare Quotes from MCS certified installers 
Calculations include solar radiation and system losses in a central UK location due to Temperature 6.6% and Angular Reflectance 3.1%, as well as other losses (e.g. Cables, Inverter) of 15%. You can change the Inverter/Cable loss and other assumptions if you wish.
These are the details we used to calculate your payback and some alternative scenarios:
Greatest 20yr Payback:
System  Power  Est Outlay  FeedIn & Savings  Pay back time  Profit over 20yrs  

16 x Canadian Solar 250W Mono  4.00kWp  £ 6,944.91  £ 801.33pa  7y 7m  £ 16,407.88  detailed calc »  
Annual breakdown for a 4.00kWp system of 16 x 250Wp panels
Facing S @ 35° in a central UK location permits generation of 3,344kWh/pa


16 x Hyundai HIS 250MG  4.00kWp  £ 7,647.82  £ 801.33pa  8y 4m  £ 15,704.97  detailed calc »  
Annual breakdown for a 4.00kWp system of 16 x 250Wp panels
Facing S @ 35° in a central UK location permits generation of 3,344kWh/pa


14 x Sharp 250W Poly  3.50kWp  £ 6,349.35  £ 701.17pa  7y 10m  £ 14,084.34  detailed calc »  
Annual breakdown for a 3.50kWp system of 14 x 250Wp panels
Facing S @ 35° in a central UK location permits generation of 2,926kWh/pa

Earliest Investment Payback:
System  Power  Est Outlay  FeedIn & Savings  Pay back time  Profit over 20yrs  

16 x Canadian Solar 250W Mono  4.00kWp  £ 6,944.91  £ 801.33pa  7y 7m  £ 16,407.88  detailed calc »  
Annual breakdown for a 4.00kWp system of 16 x 250Wp panels
Facing S @ 35° in a central UK location permits generation of 3,344kWh/pa


14 x Sharp 230W Poly  3.22kWp  £ 5,753.47  £ 645.07pa  7y 9m  £ 13,045.53  detailed calc »  
Annual breakdown for a 3.22kWp system of 14 x 230Wp panels
Facing S @ 35° in a central UK location permits generation of 2,692kWh/pa


14 x Sharp 235W Poly  3.29kWp  £ 5,879.33  £ 659.10pa  7y 9m  £ 13,328.34  detailed calc »  
Annual breakdown for a 3.29kWp system of 14 x 235Wp panels
Facing S @ 35° in a central UK location permits generation of 2,750kWh/pa

Greatest Annual Income:
System  Power  Est Outlay  FeedIn & Savings  Pay back time  Profit over 20yrs  

20 x Sanyo HIT N240SE10  4.80kWp  £ 12,062.27  £ 907.43pa  10y 10m  £ 14,453.69  detailed calc »  
Annual breakdown for a 4.80kWp system of 20 x 240Wp panels
Facing S @ 35° in a central UK location permits generation of 4,013kWh/pa


20 x Sanyo HIT N235SE10  4.70kWp  £ 11,818.80  £ 888.53pa  10y 10m  £ 14,144.75  detailed calc »  
Annual breakdown for a 4.70kWp system of 20 x 235Wp panels
Facing S @ 35° in a central UK location permits generation of 3,929kWh/pa


18 x Sanyo HIT H250E01  4.50kWp  £ 10,083.94  £ 850.72pa  9y 10m  £ 14,774.78  detailed calc »  
Annual breakdown for a 4.50kWp system of 18 x 250Wp panels
Facing S @ 35° in a central UK location permits generation of 3,762kWh/pa

These estimates are calculated by comparing over 50 MCS certified panels to determine the best possible payback. Assuming that you pay 14.4p per unit and that around 50% of the solar electricity that you generate will be used in your home.
Assumptions:
 Illustrative solar PV performance figures only. Figures are given in good faith but do not constitute "Financial Advice".
 Exact PV subsidy figures may depend on grants available at particular locations and other factors.
 Your property has an Energy Performance Certificate (EPC) rating of level D or better.
 Yearly PV output uses a factored degradation over time based on industry estimates.
 Tariffs shown presume installation after at the new FiT rates
 VAT is included (at 5% where appropriate) unless a new build is specified.
 Photovoltaic Panels will not be shaded (e.g. by Trees or Buildings) as shading affects PV output.
 Exact equipment costs are estimated based on retail prices in 2012 and will vary by installer/supplier.
 Installation costs are based on industry averages for installation type/size. Every install is different and you should obtain 3 quotes.
 Assuming that you pay 14.4p per unit and that around 50% of the solar electricity that you generate will be used in your home, without an export meter (you can change such assumptions above).