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> And you artfully forgot to mention

No he didn't, the rocks are for asynchronous heating/air conditioning, all you need to get the energy back is a water pump or air blower and tubes.

Your reply is unnecessarily dismissive and snarky. All of those ideas are easy to do projects for individuals.

The only thing you need to implement on a global/national/regional scales is a spot market for electricity accessible for everyone. Then you can lean back and watch people implement all those simple ideas and many more.

All in all, your reply is unnecessarily dismissive and snarky. Those ideas are not "brilliant ideas" (btw you should learn about correct quoting). Of course those won't solve the problem all at once, but they will have a huge impact.