Earlier quoted context omitted.
Even the poster boy for nuclear is reducing nuclear output as its fleet ages and filling that gap with renewables (reducing its electricity emissions from 2005 when their nuclear peaked too). So it apparently doesn't matter what your existing grid is, coal, gas, nuclear, hydro, of whatever mix, the thing you should be building now is mostly solar, wind and (not quite caught on globally but just about to make a very b…
The batteries mentioned in the article have only a few hours of capacity, and are designed to smooth the peak usage intraday. I think many people are confused and seem to think batteries are a viable way to address the volatility of wind, where you may deal with weeks with no/low wind, or solar, which in countries with cold winters is of little help. I have yet to see a cheap scalable alternative to carbon to deal wi…
So inevitably, the first batteries will always prioritize daily arbitrage, and only once that market is capped out will some battery projects target weekly/monthly/yearly arbitrage.
In countries with cold winters, the obvious solution is heat-energy storage systems, which don't output electricity but instead store and output heat directly; they're basically just a big pile of sand/stones/bricks wrapped in a ton of insulation. Thanks to the cube-square law, they scale up unbelievably well and can easily store months worth of heat.
Due to that scale they don't make much sense without district heating, but energy storage is a numbers-game and lots of cold places already have district heating that could be quite easily retrofitted.