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| Ìý | Specification | Costs (£) | Tonnes of CO2 saved |
| Photovoltaics | 3.5 kWp | 25,000 | 1.4 |
| Solar thermal | 6m2 | 8,000 | 0.5 |
| Double glazing | 1.5W/m2K | 24,000 | 1.3 |
| Roof insulation | 0.15W/m2K | 6,600 | 3.4 |
| Wall insulation | 0.20W/m2K | 11,000 | 3.3 |
| Leakage reduction | Ìý | 2,666 | 1.0 |
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