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‘Energy independent’ Uruguay runs on 100% renewables for four straight months
(theprogressplaybook.com)
This is a most excellent place for technology news and articles.
Changing your energy generation from burning something to turning a turbine with wind power, hydropower or geothermal power. Or just using solar, means that you have no waste heat for electrical generation.
Waste heat is only created when you burn a fuel to boil the water.
If you heat things electrically you still generate waste heat. Think electrical stove and its bigger industrial counterparts.