Ways and costs of saving energy in the home in KWh a day.

Add 20cm insulation in the loft                                          £300                      4
Fit combi condensing boiler to replace normal boiler       £3000                    12
Replace 10 normal bulbs with energy saving light bulbs      £50                       2
Fit double glazing on all windows                                     £8000                      4
Install  photovoltaic cells on the roof                                £8000                      3
Fit solar water heaters on roof                                          £4000                     1.5
Install wind turbine on roof                                               £1000                    12
Turn down central heating by 1 degree centigrade                  £0                      4
Change car to diesel version                                             £8 000                      7
Sell car and use bicycle or public transport                       £-4000                    36

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