alt Hacker NewsThis article is largely non-scientific propaganda. LCOE is a fake stat that is never used to actually calculate any cost at any point. And anytime you use variable generation, you need to keep a spinning reserve, otherwise you get a blackout like what happened in Spain. HN should be ashamed to post such an article full of misinformation and half-truths not based on how engineering actually works.
You don’t need spinning reserve, but you do need enough reserve power that can supply grid-forming generation on demand.
Batteries can react fast enough to peaks and troughs in voltage load, so long as there are enough of them where needed. Grid-forming batteries can react to frequency fluctuations electronically.
Flywheels are another approach for grid stabilisation without a baseload.