Energy efficiency and CO2 emissions in Switzerland
|In %, except where indicated||2016||2015||Change|
|Energy consumption (in GWh)||536||521||2.9%|
|Increase of the efficiency of energy to 1 January 2010||35.9||29.6|
|Increase of the efficiency of energy to 1 January 2016||8.9||–|
|Direct CO2 emissions (in tonnes)||19,837||20,116||–1.4%|
|Ratio CO2 reduction to CO2 emmissions||0.99||0.81|
In 2016, total energy consumption in Switzerland rose by 15 GWh or 2.9% to 536 GWh. The efficiency measures introduced to improve cooling in telephone exchanges and cut energy consumption in data centres partly offset the additional energy consumption attributable to network expansion. Swisscom achieved an average PUE (power usage effectiveness) value of 1.47 across all of its data centres in 2016 (prior year: 1.50). In 2016, as in previous years, Swisscom once again used 100% renewable energy. Energy efficiency improved versus 1 January 2010 to 35.9% (prior year: 29.6%), and versus 1 January 2016 by 8.9%. In 2016, direct CO2 emissions in Switzerland decreased by 279 tonnes or 1.4% to 19,837, chiefly due to lower consumption of fossil fuels. The ratio of savings among customers to emissions climbed from 0.81 to 0.99 in 2016.