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The Swiss electricity mix
- The share of different types of power plants in Swiss electricity production.
Over 40 percent of Swiss electricity comes from hydro-electric power plants. Nuclear energy makes up 45 percent of the Swiss electricity mix. The largest share of this is produced by the five Swiss nuclear power plants. Nuclear power is also, however, imported from abroad. The rest of the electricity comes from fossil fuels (11 percent), refuse incineration plants (1.7 percent) and renewable energy (0.35 percent).
Over 80 percent of Swiss electricity comes from hydro-electric power plants and nuclear power. Therefore, the production of electricity in Switzerland causes a comparatively low amount of greenhouse gases. Looked on as a whole, however, the CO2 emissions of 8 3 million tonnes per year are far from negligible.
In Switzerland, the production of one kilowatt-hour of electricity causes 140 grams of CO2-equivalent.
Household devices and their CO2 emissions
- Energy consumption and greenhouse gas emissions of different household devices and their application.
In Switzerland, household devices consume 14 percent of the energy in the household sector.
In the household a lot of energy can be saved, without compromising on comfort, by using more energy-efficient devices.
Standby – under-rated energy guzzler
More and more office devices are being used in households. Devices such as computers or printers consume around 5 percent of household electricity. Power adaptors, which convert electricity from the mains voltage (230 volts) to the operating voltage of the device (between 3 and 20 volts) bear the main responsibility for standby losses. On average, electrical devices in a three-room flat consume 37 watts per hour in standby mode. This corresponds to a greenhouse gas output of 5.3 grams of CO2-equivalent.
- The standby consumption of different flats in watts.
Energy labels for household devices
An energy label states the energy consumption and the energy-efficiency of electrical devices. A (green) is the best energy class and G (red) the worst.
The table shows that many household devices have considerable potential for saving energy which is not made use of. As a result, an A++ cooling device, for example, consumes 70 percent less electricity than one in energyefficiency class D.
- Energy labels and the saving potential of household devices. 100 percent indicates the average consumption of a device which was purchased at the beginning of the 1990s.
Source: S.A.F.E. 2008
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