It's actually hydro+wind in Norway, not just hydro. Hydro has been able to cover nearly 100% of household needs, and most of industry, up till now. The wind, controversial as it is in some places, has managed to offset some of the problems with hydro (nowadays the inter-European deals in practice forces Norway to sell off electricity from hydro in the summer, where in the past that would be saved for the upcoming winter)
I was also reading: https://norwegianscitechnews.com/2019/10/the-way-forward-for...