Back of the envelope maths

Solar PV capacity registered with Ofgem Oct-Dec 2011: 178 MW

= 59 MW / month

Average annual generation: 800 kWh / kW

Difference between old FIT rate and new FIT rate: 22 p / kWh

Number of households in UK: 20 Million

Cost of leaving the FIT for another month:

60 (MW) x 1000 (MW –> kW) x 800 (kWh/kW/yr) x 0.22 (£/kWh) = £10.5 M

Cost per household = 52 p/year

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