Legislators, investors, and journalists seem to believe that we can decarbonize the world through electrification. While it's possible to electrify most (land) mobility and low-temperature heat generation, there's no plausible profitable path to replace burning fossil fuels with renewable power production since the cost of electricity on average is 4.4 times the cost of heat.
The only option for electrification of heatĀ is to use heat pumps with efficiencies (aka COP) sufficiently high to offset both the difference in the cost of electricity vs the cost of heat and the cost of buying, installing, and maintaining the heat pumps.Ā However, as the price of heat pumps increases with increased COP and temperature ranges,Ā this option is limited toĀ processes where temperatures are lifted 30ā°C-40ā°C to maxĀ output temperatures of 80ā°C-90ā°C.
Solutions capable of reaching 220ā°C can target industrial processes consumingĀ 10% of global energy demand. Several solar heat solutions are already today able to produceĀ sustainable scalable heat at this temperature level. Great opportunities, potential, and impact may be realized the day legislators, investors, and journalists start understanding this.
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