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Waste heat becomes electricity

Have you noticed that when you charge your mobile phone, it is not only the battery that is charged – the charger itself also becomes hot? This is because the charger is not 100 percent efficient. The same goes for large factories, which due to the nature of the manufacturing processes often waste huge amounts of energy.

In fact, it is estimated that the total amount of energy wasted from Norway’s factories is between 30 and 35 TWh – about one third of the total energy used. Instead of wasting this energy, we should make use of it, for example, for district heating or generating electricity.