Either it's being proposed or other people tell them about them. It's not hard to find out where datacenters are.

The local government would need to know, and that would come out in town meetings.

Browse Google Maps aerial view and look for the backup generators.

Every produce storage facility going to have them, won't it?

No. It’s not economical for produce to have backup generators. Better to just move produce or let it go.

Sure, start sabotage with this one then https://oceancos.com/ocean-cold

Salmon is not too important anyway.

"That's not a datacenter. It's just a regular old building consuming 20+MW of electricity"