this post was submitted on 28 Apr 2025
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Just to be clear this can't be solved with storage. Currently it can be but not permanently.
For ease of argument let's say the grid runs 100% on solar with batteries that last a day. For 100% solar you need to build power for when demand is highest, winter, and supply is lowest also winter. Come summer demand is lowest and supply is highest. You can't store all that energy in summer because you got fuck all to do with it.
It's a really weird cost saving exercise but basically when supply is massively abundant it has to be wasted. No one is going to build that final battery that is only used for 1 day every 10 years.
Bringing it all together. In a 100% renewables grid with solar, wind, hydro and batteries a lot of electricity will be wasted and it will be the cheapest way to do it. Cheaper than now.
Quite a few people talk about this on youtube. Tony Seba and rethinkx is the best place to start in my opinion.
Hydo power can be used as storage, and can generate power on-demand. I'd recommend avoiding YouTube if you want reliable information.