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Read our policy.

what’s the most cost-effective energy technology%3F
Renewable£/m² gross floor areakg of carbon/m² gross floor area£/kg of carbon saved
Ground source heat pump32.811.3224.85
Biomass heating28.954.496.45
Solar water heating14.11.0813.05
PV rooftop£850/m² panel11.3m² panel75.22
Wind turbine£2000/kW290/kW6.9