For electricity generation, the UK is currently generating 50% via renewables. It goes up and down each day of course, storage is not a solved problem yet.

Nice visualisations of the current status:
https://grid.iamkate.com/

Electricity is only a part of the whole energy sector, but it's relevant to this thread about EVs.

Unfortunately it's not safe as the kernel can still write to (what it thinks is) the old filesystem on the device, which will introduce corruption to the new disk image.

However a fun fact is that you can (do not actually do this!) boot a qemu VM from /dev/sda. You have to use an overlay (eg. qemu -drive snapshot=on flag) so that qemu won't write through to /dev/sda. I use this trick in supernested, a script I wrote that runs nested within nested within nested VMs ad infinitum until your hypervisor crashes. http://git.annexia.org/?p=supernested.git;a=blob;f=run-super...

The 2 designs I'm thinking of are (tiresomely) under NDA, although I'm sure others will be able to say what they are. Last November I had a sample of one of them in my hand and played with the silicon at their labs, running a bunch of AI workloads. They didn't let me take notes or photographs.

> There's no one that expects it'll be hard to optimize for

No one who is an expert in the field, and we (at Red Hat) talk to them routinely.