Energy efficiency and CO2 emissions
|In % except where indicated||2015||2014||Change|
|Energy consumption (in GWh)||521||497||4.8%|
|Increase of the efficiency of energy to 1 January 2010||29.6||26.4|
|Direct CO2-emissions (in tons)||20,115||21,380||–5.9%|
|Reduction of direct CO2-emissions to 1 January 2010||23.5||17.0|
In 2015, total energy consumption in Switzerland rose by 24 GWh or 4.8% to 521 GWh. The rise in energy consumption due to the greater number of data centres was not fully offset by energy savings in other areas. However, energy efficiency increased versus 1 January 2010 to 29.6% (prior year: 26.4%). This improvement was largely achieved by efficiency enhancements in data centres and the Mistral energy saving project (the use of fresh air to cool telephone exchanges). In 2015, direct CO2 emissions in Switzerland fell by 1,265 tonnes or 5.9% to 20,115, chiefly due to reduced consumption of heating oil. This resulted in a reduction of 23.5% in direct CO2 emissions versus 1 January 2010.