grey box
Measures to reduce fuel bills ROI*
water tank insulation energy saving Lagging 1
loft insulation energy saving Loft Insulation 2
cavity wall insulation energy saving Cavity Wall Insulation 2.3
underfloor insulation energy saving Underfloor Insulation 4.4
solid wall insulation energy saving Solid Wall Insulation 15.8
solar energy energy saving Solar Hot Water 35
double glazing energy saving Double Glazing 58.1

*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**
ground source heat pump Heat Pumps
- Replacing Electric
4 to 8
ground source heat pump Heat Pumps
- Replacing LPG
120 to 239
wind power Wind Power 13 to 52
solar PV Solar Photovoltaics 23 to 60

**ROI is the time it takes in years to return the investment in electricity savings. The table assumes no government incentive schemes are used.

Each Year
Each Year
Each Year
dishwasher energy saving tips Dishwashers
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30kWh -
£4.62 -

11.01kg -

Run the machine full and less often

boil less water in kettle energy saving tips Boiling Water
Read More
82kWh -
£12.628 -

30.09kg -

Boil only what you need. Savings depend on how much tea you drink!

fridge freezer energy saving tips Fridge Freezers
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50kWh -
£7.7 -

18.35kg -

Fridge maintenance. Savings depend on size, age and rating

dmoney saving tips tumble drying Tumble Dryers
Read More
90kWh -
£13.86 -

33.03kg -

Operate Less often, clean filters, part dry clothes?

differnce in cost of shallow or deep bath Baths
Read More
700kWh -
£30.1 -

147kg -

Have shallower baths and consider how you heat water

change energy supplier to save money Change Supplier
Read More
0kWh -
£0 -

0 -

save money and have a beerSwitch! This is the single simplest way of saving money. This is equivalent to 100 pints of beer!

shower or power shower which is cheaper Shower of Power Shower
Read More
120kWh -
£18.48 -

25.2kg -

Aviod immersion heated power showers

save money and energy with good loft insulation Install Loft Insulation
Read More
3000kWh -
£129 -

630kg -

Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

save money and energy with good loft insulation Improve Loft Insulation
Read More
1000kWh -
£43 -

210kg -

Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

This table is under construction there are more tips here.

Your Car

The Real MPG

calculate your real mpg

Calculate your real MPG and and compare it with manufacturer data.

It’s hardly surprising that car manufacturer’s official MPG figures do not give an accurate indication of real fuel economy performance. The figures are obtained by technicians gently driving cars on a rolling road in a lovely warm laboratory. Calculate your own real MPG figures from driving on real roads in the real British weather and see how they differ!


Official MPG

whatis the 0fficial mpg

How reliable are official MPG figures?

Have you ever checked your real MPG with the figures quoted by car manufacturers in their glossy brochures? If you have, then you probably got quite a shock. Real MPG figures can vary quite significantly from the official figures, but why? It’s because the tests used to obtain the figures are not representative of real life driving.


Top 10 most fuel efficient super minis

Korean and American Super Minis outstrip the Europeans on fuel Efficiency

The ‘Super Mini’ is one of the most popular types of car in the UK; it includes cars such as the Ford Fiesta, Renault Clio, and Volswagen Polo. So we thought it would be an interesting exercise to compare the fuel economy of cars in this category. It proved to be quite a time consuming and difficult task, but the results were very surprising.


Top 10 tips for improving your car fuel economy

energy saving driving tips

With the current high fuel prices, even a relatively small improvement in your MPG can save you money. Most drivers will be able to make savings by changing their driving habits and techniques.


Walk or Drive?


For the average human body weight of 65kg, (Average female is 60kg average male is 70kg) a 1 km walk at say 6 km/hour burns about 50kcal of energy (kcal or kilo-calories are often confusingly shortened to just Calories). The 50kcal came from digestible foods, or the digestible chemical energy in the foods. 50kcal converts to approximately 0.06 kWh of energy.


Petrol vs Diesel

Petrol vs Diesel – Which is cheaper to run?

In recent years the popularity of diesel engines has steadily increased to the point where sales of diesel cars now slightly exceed those of petrol cars.

The introduction of turbo diesels and fuel injection technology has significantly improved the performance of diesel engines. In addition, you typically get more MPG from a diesel (and therefore less CO2 emissions) and with rapidly increasing fuel costs and the introduction of a CO2 based taxation system, diesels are also now considered cheaper to run.


Do Electrical Cars Produce Less CO2?

0fficial mpg Many consider that electric cars produce no CO2. Well in operation this is true they do not, however when they are charged they take electrical energy from the electrical power grid which has in turn been generated by 80% fossil fuels.  The upshot is that using an electric car will also produce CO2, but according to the calculations below it is about half that of a car powered by internal combustion and in the UK it could cost 3 times less than petrol!  This is great, but the technology infrastructure for electric cars is still some time off, so don’t run off the car showroom yet!


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