Upfront cost of hydro is pretty environmentally controversial. It takes transforming a landscape/ecosystem. (https://en.wikipedia.org/wiki/Hydroelectricity#Disa

Upfront cost of hydro is pretty environmentally controversial. It takes transforming a landscape/ecosystem. (https://en.wikipedia.org/wiki/Hydroelectricity#Disadvantages https://en.wikipedia.org/wiki/Hydroelectricity#Disadvantages) Nuclear is also controversial, as is well known.