We need very large (multi-gigawatt-hour) storage for big cities and megacities, but so far the only viable option to serve them is pumped hydro storage (PHS): it uses cheaper nighttime electricity to pump water from a low-lying reservoir to high-lying storage, and its discharge provides instantly available generation.[76] With renewably generated

... See more

In large, populous nations, the complete reliance on these renewables would require what we are still missing: either mass-scale, long-term (days to weeks) electricity storage that would back up intermittent electricity generation, or extensive grids of high-voltage lines to transmit electricity across time zones and from sunny and windy regions to

... See more

1/10 Europe just got a brutal wake-up call about green energy math. When wind & sun disappeared in December, electricity prices shot up 20X. Our current plans for batteries and storage won't solve this for decades. Here's the real numbers 🧵 https://t.co/NGtXvMDuE6