Today and Earlier

IT and CO₂ Emissions

IT accounts for 2% of CO₂ emissions globally—the same as the aviation industry. (Gartner 2007) <> + ><

IT accounts for around 2% to 3% of energy consumption in the UK. (EITLT) <> + (Computergram Jul-07)
America's servers consumed about 61 billion kilowatt-hours of juice in 2006—about 1.5% of total electricity consumption in the country.
- Servers ate about as much electricity as all of the colour televisions in the country. This is about twice the amount of electricity that servers and data centres consumed in 2000. (EPA 2007) <> + (Computergram Aug-07)
The total electricity use of home computers in the UK doubled between 2000 and 2005. (Market Transformation Programme) <> + ><
In 2005 more than 9% of the total UK domestic electricity bill was due to computers and their peripherals. (Market Transformation Programme) <> + ><
The manufacture of a single PC needs 1.7 tonnes of materials, including the consumption of more than 10 times its own weight in fossil fuels.
- 75% of a PC's fossil fuel consumption has already happened before the computer is ever switched on. (Professors Rudiger Kuerh and Eric Williams, United Nations University in Tokyo) <> + ><

By 2011, if the USA does little about energy efficiency, the electricity usage of servers and data centres could nearly double again, to more than 100 billion kilowatts. (EPA 2007) <> + (Computergram Aug-07)

By 2020, entertainment, computers and gadgets will account for 45% of electricity used in UK homes. (Energy Saving Trust) <> + ><