Energy Efficiency

In response to many customer's questions regarding the efficiency of electrical installations in their homes,  this page is designed to give you some guidance as to how much electricity various household appliances use and how measures that can be taken to reduce your electricity bill.  If after reading the following information you feel that you would like my assistance regarding fitting of energy saving measures, then I would be pleased to advise and quote on any action required.

1.  Energy/Cost of usage for household appliances

Typical energy consumption and associated cost for common appliances in the home are shown below.  Prices are based upon EON "standard tariff" energy prices as at 01/10/2008 and energy consumption is for modern energy rated appliances.  Older non-energy rated appliances may use a lot more power.


Shower (7.5KW)  -  16p per 5 minutes

Microwave (1KW)  -  2p per 5 minutes

Kettle (2.5KW)  -  5p per 5 minutes

TV (180W)  -  4.5p per hour

100W light bulb - 2.5p per hour

Oven  -  25p per hour

Fridge/Freezer - 25p per day

Video on "Standby" - 1p per day

Washing Machine - 32p per cycle

Dishwasher  -  25p per cycle

Tumble Drier  -  1.12 per cycle

Obviously upgrading your old appliances to modern energy rated ones will save you electricity in the long run. Alternatively various other measures can be taken e.g  boxes are available now that will turn your appliances off when in "Standby" mode or a timer can be used to run your washing machine at night on "off peak" electricity.


2. Energy saving lights

One very easy way of reducing your energy consumption is by fitting energy saving lighting in your home.  An equivalent energy saving bulb can use only a quarter the power of it's equivalent.  By targeting the lights that you have on the most, the savings can be greatest.

In recent years there has been a tendency to install high power halogen down lighters, these use a lot more electricity than the lighting that they replace.  It is now possible to buy energy saving bulbs to fit these fittings.  Given that a typical room with down lighters may have 6 such bulbs the potential for energy saving is significant.

Energy Efficient Bulbs

3. Thermostats

Installation of an electronic programmable thermostat allowing different temperatures to be set at different times of the day and week will mean that your central heating system is not on as much as with a traditional on/off thermostat.  This not only saves you electricity but also gas or oil while your boiler is not running.  

Programmable Thermostat Controller

4. Energy Monitoring

 There are now products available that allow you to monitor your total household energy use instantaneously.  Some of the electricity providers are now giving them out free as part of their tariffs.  Installation is very simple, If you are interested, I can supply and fit one for approximately 50.

Typical Household Energy Monitor         



Copyright 2011 Richard Coombs. All rights reserved.