Home insulation: What are the most effective forms of insulation and what provides the best return on investment.
Heating and Hot Water: How do different forms of heating and fuel compare?
Domestic Appliances: Guidance on the actual energy costs of and whether energy consumption should be a factor in your purchasing decision for new appliances.
Renewable Energy: Can enough energy be generated to meet your needs? What are the costs and most importantly what is the payback time on your investment?
Energy Saving Tips: Practical advice on ways to save money and where you should focus your effort (and money) on making changes.
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Household Energy Costs
Site Units
The main units used in this site are in the table below, For a complete explanation of any of these Wikipedia is an excellent resource.| Unit | Name | Detail |
| W | Watt | Unit of Power |
| kW | Kilowatt | 1000 watts |
| kWh | Kilowatt hour | Measure of Energy |
| L | Litre | Measure of Volume |
Best Investment table
| Measures to reduce fuel bills | ROI* | ||||
 |
Lagging |  |
1 | ||
 |
Loft Insulation | |
1.9 | ||
 |
Cavity Wall Insulation | |
2.2 | ||
 |
Underfloor Insulation | |
4.2 | ||
 |
Solid Wall Insulation |  |
15.1 | ||
 |
Solar Hot Water | |
34 | ||
 |
Double Glazing | |
55.6 | ||
*ROI is the time it takes in years to return the investment in fuel savings for an average gas heated 3 bed semi-detached house. The table assumes no government incentive schemes are used. | |||||
| Renewable Energy Measures | ROI** | ||||
 |
Heat Pumps - Replacing Electric |
|
4 to 8 | ||
|
Heat Pumps - Replacing LPG |
|
15 to 30 | ||
 |
Wind Power | |
14 to 55 | ||
 |
Solar Photovoltaics | |
24 to 64 | ||
**ROI is the time it takes in years to return the investment in electricity savings. The table assumes no government incentive schemes are used. | |||||
Comments, section: "Household Energy Costs"
