Prices fully installed  inc VAT @5%    (subject to survey)

6 panels       1.14 kw      £6819

8 panels       1.52 kw      £7924

10 panels      1.9 kw        £9130

12 panels      2.28 kw     £ 10390

21 panels      3.99 kw     £ 15,093

each panel  1.58m x .808m

Finances

Average UK domestic electricity bill ( 5000 units @ 12p )        £  600

Cost of a 10 panel system inc VAT                                           £ 9130

Total financial benefit                                                           £  781

Return on investment                                                                 8.5%