last updated: 2026-01-03
Here you see that converting from fossil energy sources to renewable electric energy reduces the overall energy needed by about two thirds.
The efficiency of heat pumps and electric cars is at least three times higher than that of fossil fuel heating systems and vehicles.
The following graph shows the consumption of a household starting in 2001. The house got isolated. The living space of the house (100m²) was also more than doubled (2002). The number of residents rose to 6, before declining again from 2022 onwards.
The heating (gas) was replaced with a heat pump in 2014. The fossil cars were replaced by electric cars (2012/2018).
