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| It’s payback time – The costs of going green | ||
| Typical extra cost per home | Typical payback period in years | |
| Install high-efficiency condensing gas boiler | £170 | 3 |
| Improve insulation by 20% | £200 | 4 |
| Energy provision by combined heat and power plant | £1000 | 15 |
| Solar waterheating | £2000 | 18 |
| Water-saving devices around the home | £120 | 25 |
| Generate electricity using wind turbines | £3500 | 40 |
| Generate electricity using photovoltaic panels | £5000 | 120 |
| Greywater recycling (recycling washing water to flush toilets) | £1800 | No payback |
| source: Richard Hodkinson Consultancy | ||
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