### Site Prices Update

Last Updated28

^{th}June 2022

All calculations on this site are based on **current fuel prices**, they are checked regularly and calculations are automatically updated.

The costs calculated based on these fuel prices should be regarded as 'good estimates', given that fuel prices vary in different parts of the county and at different time of the year.

The calculations also have different levels of accuracy depending on the nature of the calculation. For example calculating the energy use of a known power output TV is very easy compared to calculating the effect on energy savings when insulating a cavity wall.

#### Site Calculations

### Set Your Own Prices

User PricesFor several of the fuel prices on this site you can now set your own prices and all the calculations on the site will adjust accordingly.

#### Set Prices

At Confused About Energy we aim to provide practical, impartial advice on all aspects of energy usage, climate change and ways to save money on energy bills.

All calculations on this site are based on **current fuel prices** they are checked regularly are automatically updated and were last changed on:-

28^{th} June 2022

The costs calculated based on these fuel prices should be regarded as 'good estimates', given that fuel prices vary in different parts of the county and at different time of the year.

The calculations also have different levels of accuracy depending on the nature of the calculation. For example calculating the energy use of a known power output TV is very easy compared to calculating the effect on energy savings when insulating a cavity wall.

#### Site Calculations

**Site prices**were last updated

**28**. When they are updated

^{th}June 2022**all calculations**on the site are updated with the new prices automatically

**Read More**.

Electricity | £0.271 per unit (1 kWh) |

Economy Electricity | £0.094 per unit (1 kWh) |

Gas | £0.072 per unit (1 kWh) |

Domestic LPG | £0.122 per unit (1 kWh) |

Heating Oil | £0.104 per unit (1 kWh) |

UK Grid CO_{2} Emissions | 0.233 kg per kWh used |

**Read More**.

The main units used in this site are in the table below, For a complete explanation of power and energy **Read More**.

Unit |
Name |
Detail |
---|---|---|

W | Watt | Unit of Power |

kW | Kilowatt | 1000 watts |

kWh | Kilowatt hour | Measure of Energy |

L | Litre | Measure of Volume |

Please use twitter to ask a question Message @@EnergyThinking

- Find out the power consumption of the device in kilowatts (kW).
- Estimate how long the device will be used for each day.
- Multiply the power consumption by the number of hours, to get the energy use per day in kilowatt hours (kWh).
- Multiply this by the number of days in a year (365).
- This will then give you the energy use of the device for the year.
- Repeat the above with the old device you are replacing.
- Subtract the new device energy use from the old device energy use.
- Calculate the cost of this energy, if for example the average UK cost of electricity is abot 12p per kWh, in the US it is about the same in cents. The average UK gas price is about 3p per kWh, there is a full listing here.
- So all you do now is multiply the cost of the saved energy by the cost per unit.
- Don’t forget to get the units right, 12 pence is 0.12 pounds.
- The final step to estimating a payback time is to divide the cost of the new device by the financial value of the energy saving per year.

**As an example**

You are buying a new refrigerator, and the power consumption of the old unit is 0.05kW, a refrigerator is on all day, so its energy consumption is 0.05 x 24 hours, giving 1.2 kWh, it is on all year, so for the year this is 438 kWh, with an electricity cost of 0.12 Pounds (use your currency unit, e.g. Dollars or Euros), this would cost 52.6 pounds per year to operate.

The new fridge power consumption is 0.04kW, and using the same method, this costs 42.05 pounds per year to operate, so the cost saving per year in energy bills is 52.6 - 42.06 = 10.54 pounds. If the fridge costs 200 pounds then on purely energy cost grounds the investment will take 19 years to pay back.

You can also use this method to calculate whether it is worth buying the more expensive energy saving model. We should all try to save energy, but manufacturers charge an unnecessary premium for the energy efficient badge, and are often deceiving customers making them spend much more for little energy saving gain. Forewarned is forearmed!

The old equipment is discarded,

Does not consider maintenance costs,

Excludes finance and alternative investment considerations

****Some Assumptions:-**The old equipment is discarded,

Does not consider maintenance costs,

Excludes finance and alternative investment considerations

**Calculator 2**-

**Will**2010-08-27 12:07:53

An excellent idea the only one I have found that can convert label data such as kWh/year into running costs.IT'S A SHAME IT DOESN'T WORKPLEASE FIX THIS

## Comments and Questions