

200MWh is about 1/100 of Little Boy, the atomic bomb dropped on Hiroshima.
Compressed air can get out all at once given the right circumstances.
Storing energy in a way that can go boom is something I’d be a little scared of, were I a nearby resident. I’m sure thermal batteries can have gnarly failure mechanisms but I would way rather live near one of those than a giant compressed air cylinder.


VNC? You have your choice of servers, and clients are ubiquitous.
A big gotcha is that you need to be careful with encryption/security, as in classic UNIX style VNC does one thing (remote desktops). It’s easy to forward over ssh though.
You can also use VNC to share, which is not what you want; this depends on the type of server/settings. But you can definitely create a new virtual X11 session and access it remotely.