It’s also proven tech, there are functional implementations of pumped hydro all over the place and they have been in place for decades.

Sadly it requires the right geography (it would become ridiculously expensive when you actually need to build the height difference instead). On the global scale that's not a problem, but locally the distribution of beneficial features is varying widely, so the potential to upscale pumped hydro is often limited (see for example countries like Switzerland that could build 50 times their required storage easily compared to the Netherlands with their highest mountain just 300 meters over sea-level).

PS: There are well-scalable concepts for flat coastal areas (for example under sea reservoirs where water is pumped out of submerged tanks, creating power when left to fill up again), but for now mostly as proof-of-concept only.

I bet the German government doesn’t prevent privately funded or state projects.

Jokes on you. They are planning to eliminate all feed-in compensation while also letting the grid providers (all well-connected or subsidiaries of fossil-fuel heavy power companies) freely decide if capacities of the grid are sufficient to connect renewables, but of course with zero incentive to improve capacities. So in short: nobody will lend you money for your private renewable project anymore as no matter your business plan a third party benefiting from your failure has total control over just cutting you off from the neccessary infrastructure.

Again: works just as well. Just so much quieter that that Trump idiocy.

They also don't need to be insane, just corrupt and bought by the fossil fuel industry. In fact the ex-CEO of the grid provider with the most impressive track record of burying needed battery storage projects in red tape for years and years, was rewarded for this with a job as Minister of Economy and Energy and is busy rewrting the laws to cement Germany's fossil fuel dependence for decades to come (for example: they changed the planning rules regarding energy security requirements with totally made-up bullshit numbers, so nothing but gas-peakers are sufficient as "storage").

Fun fact: the other big investor in hydrogen pipeline projects is your neighbour to the east... planned to go all the way through the Baltic Sea to Germany.

Also the French energy concept (see: RTE's (French grid provider) study about energy by 2050) is at its core entirely based on nuclear base load in a renewable/storage system making electrolysis more economical because on top of producing hydrogen with excess renewable power during the day, you then also have a steady production of excess electricity throughout low demand night times.

Sure... tell me how the German government is not destroying the renewable upbuild that was finally on track, while blocking needed battery capacitites and building new fossil fuels plans.

Sorry to tell you, but it's indeed universal (because the people spending money to push that insanity are operating globally). In most other countries they are just more subtle and not loudly screaming about all the good work they do for their fossil fuel linked donors.

Leider brauchen wir längst nicht mehr noch mehr Beweise für die Nicht-Verfassungsmäßigkeit der AfD, sondern Mehrheiten, um das Verfahren anzustoßen. Und die gibt es im braunen Sumpf Deutschland (Afd + "die AfD bennennt doch nur die Probleme, die wir zu lange verschwiegen haben"-CDU + "Wir kennen keine Brandmauer!"-FDP zusammen mit bequemer Mehrheit) nunmal nicht.

Letztendlich werden wir derartige Entgleisungen jetzt einfach ständig zu hören bekommen, und passieren wird nichts, außer dass die CDU es in spätestens 3 Monaten nachplappert.

" Zugleich stellt sich die Frage, wer von der neuen Technik ausgeschlossen wird: etwa Menschen ohne Smartphone oder ohne Erfahrung im Umgang mit Apps."

Wenn es denn nur das wäre. Aber der Bund schafft es ja auch konsequent nicht einen seit Jahren bekannten Bug in der Ausweisapp zu fixen, womit diese auf diversen Alternativen nicht läuft, und zwingend offizielle und aktuelle Android oder Apple Software erfordert.

Bei anderen Apps wie i-KFZ hab ich ähnliches gehört, aber nie selbst getestet...

grow crops

In reality that does not happen on its own. Once you figure in the use of land, water and energy to grow crops it's the by far most inefficient way.

Even without the additional costs in farming and just assuming all those plants happily grow on their own, plants are still losing... "Photosynthesis turns roughly 3 percent of incoming sunlight into organic compounds [...] "Artificial photosynthesis"—comprising a PV cell that provides the electricity to split water into hydrogen and oxygen—turns roughly 10 percent of incoming sunlight into usable hydrogen[...]"

Sounds indeed like bullshit. More so as here in Germany there are indeed a lot of projects using natural gas infrastructure for the planned hydrogen transport network. But definitely not without modifications.

but i don’t believe green hydrogen is going to play a big part of the grid

Europe seems to disagree, with projects worth more than ten times of those in North America and Asia combined.

Edit:

Here's the already approved part of Germany's planned hydrogen core network (new lines, converted lines, opened by 2025):

And an article about one of the earliest segments of 55km opened 1½ years ago, based on 95% pre-existing lines.

And an article (but only available in German) claiming that the planned capacity for 2025 (converted or newly build) is met with new ~525km out of ~9000km by 2032. Of which ~60% will be converted pipelines, 40% new construction.

It's more the other way around. Globally you can look up the production capacities to see that renewables have already won. Locally, especially in western countries, this reality is fought very hard at the moment with every right-wing populist and their grandma screaming loudly about those evil wind turbines and ugly solar panels (and don't let me even start with the more fringe indiots –or not so fringe anymore since they got coopted by the far-right, too– telling all kind of insane stories about solar is heating of the planet and wind power is causing extreme weather patterns...) and well-connected industry lobbies even covertly paying alleged environmentalists and all those other nimbys to block green energy.

Ja, bei mir mitten im Ruhrgebiet gibt es Strom, gutes Netz und die Sirenen stehen an der Grundschule eine Straße weiter... Aber ohne die extra installierte NINA App (und die ist oft etwas lästig, weil lokal viel zu viel Kleinscheiß mit hoher Priorität versandt wird) herrscht halt jeden Warntag aufs Neue absolute Stille.

An old salt mine

Been there, done that. (https://en.wikipedia.org/wiki/Asse_II_mine)

dump it in the ocean

Sure... (https://www.earth.com/environment/scientists-found-200000-barrels-of-leaking-radioactive-waste/)

literally anywhere in its sarcophagus

Good idea! (https://en.as.com/latest_news/in-1977-the-us-buried-120000-tons-of-radioactive-waste-in-a-pacific-nuclear-tomb-almost-50-years-later-the-ocean-is-threatening-to-expose-the-runit-dome-f202608-n-2/)

Any more ideas that are proven to not work without risk of contaminating the environment with uncalculable consequences?

The amount of waste from nuclear power is miniscule

The miniscule amount of 200,000 tons was already dumped into the ocean (https://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_waste#History) leaking radioactivity there.

Ich bin mir zeimlich sicher, dass es nicht an den Geräten liegt. Selbst das älteste von ihnen ('nen altes Samsung S7) ist kompatibel, korrekt konfiguriert, und hat tatsächlich schon Cell Broadcast Nachrichten empfangen. Nur eben nie an den Warntagen bei mir zu Hause, weil es bei dem System scheinbar ein extremes Chaos, sowohl nach Anbietern als auch lokal gibt.