Government grants made available for domestic renewable energy retrofits

The grants will be set at £1,250 for a ground source heat pump; £950 for a biomass boiler; £850 for an air source heat pump; and £300 for solar thermal water heaters. On average, this should work out at about 10% of the total cost of the equipment and installation.

http://www.guardian.co.uk/environment/2011/jul/21/renewable-energy-heating-grants

http://www.decc.gov.uk/en/content/cms/meeting_energy/renewable_ener/incentive/factsheet/factsheet.aspx

http://www.ofgem.gov.uk/e-serve/RHI/Pages/RHI.aspx