> Or lifting a really heavy thing and letting it fall slowly.
I challenge you to run the numbers on this.
Or at least read or watch someone who has.
Whenever you’re certain you know the answer, it behooves to try to prove yourself wrong.
Unsurprisingly, gravity is an extraordinarily weak force. It merely appears otherwise because the total mass of the Earth is literally astronomical at around the 5.9722×10^24 kg mark. Concrete blocks hanging from a crane, much less so.
Pumped hydro is a nonstarter: do you see any suitable geography anywhere? Yep, they’ve already been dammed damn it. So approximately no one^ can have their existing hydro upgraded to pumped hydro retro fitted to pumped, and have the surrounding landscape covered in solar and wind.
How helpful!
Chemical batteries? South Australia has a decent sized one. I think it can power some of the state for about 12 seconds.^^
^okay, not no one: Hydropower accounts for approximately 15%, but you have to choose pumped hydro sites where it also makes sense for wind and / or solar, so it’s clearly not an answer for everyone everywhere. Not even close.
^^hyperbole! I know. Look, it’s actually around 1–1.5 hours, which is statistically closer to my estimate of 12 seconds than anything actually useful like a day or a week.
I’m powered by the James Bay project and live about three hours from Niagara Falls, so I’m a believer in hydro.
Niagara Falls, to the unaware, uses pumped hydro during night and off-season to account for power dips for when tourists want to look at the waterfall.
For the chemical batteries section, that’s an endorsement: Australia built a system that can handle grid-scale charge and discharge! At this point it’s a matter of buying more batteries and sticking them in, a resourcing problem rather than an engineering one.
I challenge you to run the numbers on this.
Or at least read or watch someone who has.
Whenever you’re certain you know the answer, it behooves to try to prove yourself wrong.
Unsurprisingly, gravity is an extraordinarily weak force. It merely appears otherwise because the total mass of the Earth is literally astronomical at around the 5.9722×10^24 kg mark. Concrete blocks hanging from a crane, much less so.
Don’t believe me.
BIY - Believe It Yourself here:
https://youtu.be/iGGOjD_OtAM?si=FXjjxz4NLbA-oj7U
Pumped hydro is a nonstarter: do you see any suitable geography anywhere? Yep, they’ve already been dammed damn it. So approximately no one^ can have their existing hydro upgraded to pumped hydro retro fitted to pumped, and have the surrounding landscape covered in solar and wind.
How helpful!
Chemical batteries? South Australia has a decent sized one. I think it can power some of the state for about 12 seconds.^^
^okay, not no one: Hydropower accounts for approximately 15%, but you have to choose pumped hydro sites where it also makes sense for wind and / or solar, so it’s clearly not an answer for everyone everywhere. Not even close.
^^hyperbole! I know. Look, it’s actually around 1–1.5 hours, which is statistically closer to my estimate of 12 seconds than anything actually useful like a day or a week.