Home energy wastage calculator  Here is a quick way to estimate the power you will use around your home whilst your devices are on standby...    Number you leave on standby overnight Type of device Approximate power wasted 0 1 2 3 4 5 6 7 8 9 10 TV sets Watts 0 1 2 3 4 5 6 7 8 9 10 Set-top boxes (Freeview, Sky, NTL, etc) Watts 0 1 2 3 4 5 6 7 8 9 10 DVD players Watts 0 1 2 3 4 5 6 7 8 9 10 Amplifiers Watts 0 1 2 3 4 5 6 7 8 9 10 Video players Watts 0 1 2 3 4 5 6 7 8 9 10 CD players Watts 0 1 2 3 4 5 6 7 8 9 10 Mobile phone chargers / battery chargers / adapters Watts 0 1 2 3 4 5 6 7 8 9 10 Computers Watts 0 1 2 3 4 5 6 7 8 9 10 Computer monitors Watts 0 1 2 3 4 5 6 7 8 9 10 Computer speakers Watts 0 1 2 3 4 5 6 7 8 9 10 Printers Watts 0 1 2 3 4 5 6 7 8 9 10 Router / modem / broadband box Watts 0 1 2 3 4 5 6 7 8 9 10 Microwave ovens Watts 0 1 2 3 4 5 6 7 8 9 10 Washing machines Watts 0 1 2 3 4 5 6 7 8 9 10 Tumble driers Watts 0 1 2 3 4 5 6 7 8 9 10 Dishwashers Watts   Total power consumption Watts   Total power consumed per year kwh per year   Using Bye Bye Standby you could save up to Kg of CO2 per year   ... and up to £ per year   Assumptions N.B. This model assumes the following: Your devices are typical of modern devices found around the home in the UK The devices shown are in operational mode (i.e. Bye Bye Standby is not operational) for around 7 hours per day (4PM -> 11PM for a typical TV) There are roughly 20 million homes in the UK Devices such as telephones, burglar alarms, CCTV systems, etc, are left on standby all the time and Bye Bye Standby is not used to reduce their energy use.