There is a lot of work happening in thermal mass storage for industrial heat demand (currently most industrial processes use Natural Gas to supply heat) .
Almost all Data Centre activity could be priced relative to electricity price allowing dynamic scaling.
I feel like i commented on this / something similar. But what about a free Nextcloud account / Nextcloud server with Maps and one of the many Location apps that use Nextcloud. Next tracks , Maps Geofavourites etc. that are available via Fdroid?