[Lev1a]

> This is flat out wrong. many communities already exist exclusively on renewables.

"Communities" maybe but what about (heavy) industry like the the one required to e.g. manufacture more wind/water turbines and parts, (continue) to research more efficient technologies in the future, to sustain the growing population etc. ?

[tanbog]

Iceland seems to do pretty well on almost exclusively renewables. And this includes Aluminium smelters which are amongst the most power-intensive heavy industries.

[DennisP]

Iceland uses plenty of geothermal power. That doesn't say anything about what's feasible with wind/solar.

Wind/solar and hydro/geothermal really should be described by different words. Using "renewables" for both causes a lot of confusion.