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Costa Rica IIRC leads the world in renewables, followed closely by some North African and Middle Eastern countries.

There are several countries that run near 100% renewable. Most of them are getting their electricity from hydro dams though, rather than solar and wind.

Hydro dams have their own environmental concerns.

Too much Hydro (by percentage of generation) also leaves the power generation at risk if a drought occurs too[1][2][3].

There is just too much uncertainty in long term seasonal rain fall levels, especially with the effects of climate change as well as El Niño and La Niña cycles. Resulting in low production years.

[1]http://www.sandiegouniontribune.com/business/energy-green/sd... [2] https://www.theguardian.com/world/2017/dec/08/malawi-blackou... [3] https://www.theguardian.com/news/2016/mar/30/weatherwatch-ha...

Ecuador is 100% hydro - have been for a long time.

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