mpweiherSeven countries now generate 100% of their electricity from renewable energy
https://www.the-independent.com/tech/renewable-energy-solar-nepal-bhutan-iceland-b2533699.html
Specifically Albania, Bhutan, Nepal, Paraguay, Iceland, Ethiopia and the Democratic Republic of Congo.
Not to downplay the positive steps that are being taken towards using renewable energy worldwide, but one must point out that all those countries except one are almost exclusively using hydroelectric power, whose availability at such scale is a geographical lottery. As for Iceland, which also relies mostly on hydroelectric power but not in such great a proportion, it makes up for it thanks to easy and abundantly available geothermal power (which, though environmentally friendly, is arguably not technically renewable).
The Earth's heat content is about 1×10^19 TJ. This heat naturally flows to the surface by conduction at a rate of 44.2 TW and is replenished by radioactive decay at a rate of 30 TW. These power rates are more than double humanity's current energy consumption from primary sources, but most of this power is too diffuse (approximately 0.1 W/m^2 on average) to be recoverable.
In comparison, averaged over the year and the day, the Earth's atmosphere receives 340 W/m^2 from the Sun.
https://en.wikipedia.org/wiki/Solar_irradiance#On_Earth's_su...
This leads naturally to "artificial geothermal", where solar energy is used to heat rocks or soil, and the heat is later extracted. It doesn't have to be anywhere near as deep as ordinary geothermal, which had to accumulate that heat over many thousands of years. Just ~10 meters is about enough.