In 2021, the main source of the temperature increase is the burning of fossil fuels which account to two thirds of the greenhouse gasses. Other sources are methane which accounts for 25% of the greenhouse gasses in 2021. Methane is 80 times more powerful than CO2 (GWP20 = 80) when calculated on a 20 years life cycle. In 2016, the members of UN Environment Programme (UNEP) agreed to the Kigali amendment of the Montreal Protocol on Substances that deplete the Ozone layer. This amendment set out actions for reduction in production and consumption of hydrofluorocarbons (F-gasses) as they otherwise would lead to 0.4°C global warming and count for 25% of the global greenhouse gas emission by 2050.
In a race to reduce greenhouse gasses there is a major push for the reduction in burning fossil fuels. Fossil fuel is mainly used for heating, electricity generation and transport. Globally, heating amounts to 50% of the fossil fuels being used, by optimizing and decarbonizing these heating systems, large gains can be achieved to reduce the global emissions. One of the focus areas is to decarbonize the electricity generation and electrify the heat production. To optimize heat production from renewable electricity sources, implementation of heat pumps would be an optimal solution. With coefficients of performance heating (COPH) between 3 – 10, it is possible to gain 3 – 10 times the heat energy compared to the electric energy used.