skillissuer

easy high power generation from hydrogen would be in gas turbines, but this will have horrendous roundtrip efficiency. which is why it'd be better to soak up peak power in hydrogen and use it for non-power uses, like ammonia and then fertilizers, or direct reduced iron, or various hydrogenations in fine chemicals segment. these things take a solid chunk of energy to make. it's net positive because it replaces gas https://en.wikipedia.org/wiki/Steam_reforming while storing hydrogen is pain it's easier than electricity, and some intermediate can be stored too if hydrogen consumption can be surged

gas turbines are also fantastically versatile. any petroleum fraction lighter than grease, ethanol, biogas, syngas, hydrogen, ammonia, really anything that burns and can get through nozzle can be used as a fuel. if you have a carbon-neutral source of liquid fuel that can be stored, you have carbon neutral peaker plant

i thought sodium batteries need low hundreds C for ceramic electrolyte to work. i stand corrected

e: CATL made sodium-ion battery, i was thinking of sodium-sulfur battery

i think that in order for that to happen we have to change the way we think about energy. more of use it when it's available, and less use it on demand

i have a sneaking suspicion that if 80%+ of energy is used on heating anyway then storing that heat at point of use and topping it up when excess energy is available is the easiest, least wasteful way to go

redox flow doesn't have that much better energy density. granted, it's great for long term storage, but it's still not there, plus it takes stupidly large amounts of vanadium to run. there's also zinc bromide flow battery but this one deposits zinc so it's limited on one side

yeah this is fine, but these need to run at high temperatures last time i've checked. that makes it a bit more complicated to use

at least it works at scale relevant to grids. there are other interesting devices that store high grade heat in things like molten silicon or sand, then convert it to electric energy again, but it's rather at prototype scale now i think. power to hydrogen is fine if it's replacing hydrogen from natural gas, but it's wack for storage of energy

there are some tradeoffs

that train used to have peak speed of about 150km/h on that route maybe it's a bit faster by now. these five stops are in three cities, and there's 250km-ish distance between them. (and all built for EU money) by that 30 minute mark it started slowing down and was something like 60km away from city

they had one? never noticed

high speed train. a scrawny dude in a tracksuit asks someone when the train will stop. next station in 40 minutes, someone tells him. (there are only five stops and all in large cities) this reassures him for a while.

30 minutes to the city. dude stands up and asks when will the train stop. the same someone tells him that in half an hour, but this time he doesn't chill out. he wants to get out, RIGHT NOW. dude gets increasingly more agitated and hovers around train door. he found a hammer somewhere and tried to break open glass in that door, but it's reinforced so it doesn't fall apart. at that point someone alerted train staff. he wants to get out, right now, and won't through that hole. train got stopped shortly after, everyone in that car was moved out to others. other than that dude, that is, now without hammer, repeating I WANNA GET OUT

some of staff tries to pacify him, but it doesn't work. border guard and some other uniformed officer, both on leave, tackle him and hold until railway security arrive. it took six of them to take that tracksuit dude out to ambulance. (he got to leave train) motherfucker caused 4h of delay for this train and many delays downstream