HN user
it is true that pumped storage and great solar locations are often in different locations.
maybe there is a possibility for retrofitting some existing dams that are used primarily as resevoirs and not power plants, since pumped-storage are net-neutral on resevoir storage.
example: https://en.wikipedia.org/wiki/Parker_Dam
...but i am NOT an expert by any means, and it's probably way more complicated than that.
Planet Money covered this recently: https://www.npr.org/templates/transcript/transcript.php?stor...
Here's an entry on the storage facility: https://en.wikipedia.org/wiki/Bath_County_Pumped_Storage_Sta...
"The biggest battery in the world is a giant lake tucked away in the Appalachian Mountains on the border between Virginia and West Virginia"
One of the more promising things is actually water-based storage using back-to-back reservoirs. Water has a lot of mass per volume and is really low tech. And it's a proven strategy that has been operational for many decades.
yes. they metabolize differently and at different rates.
theobromine takes longer for your body to remove than caffeine. (also the main stimulant in chocolate, and the one that is bad for dogs, because they can't metabolize it).
mate has more theobromine than coffee, so it's effects should last longer. just measuring caffeine is not a good way to find out the total stimulant effect.
(see wikipedia)