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The Department does not hold information on the number of PV solar panels installed in the UK, as data on installations is usually collected in terms of installed capacity. The total PV solar installed capacity for 2003 was 5.9 MW. Installed capacity for 2008 is not yet available but based on an extrapolation from the installed capacity of 14.3 MW in 2006, it is estimated to be in the region of 19 MW.
More information is available on the International Energy Agency website at:
The Department does not hold the information on the amount of solar heating technology installed in the UK. This could be obtained only at disproportionate cost.