So the situation appears to be:
1. Contractor can't take action without word from the electrical subcontractor.
2. Electrical subcontractor can't take action without word from NV Energy.
3. NV Energy will do nothing without action from the contractor.
In computing terms, I'd call that an endless loop. I've been trying to put it into simple terms: "Tell me where to sign and how much I have to pay you, then get the work done, please."
It's crazy. We want the work done, if we can get it done for any sort of a reasonable cost. (At this point, I'm expecting it's going to cost between $5,000 and $10,000, which isn't great, but it's the only way we're ever going to get any of the other work done on the house that it needs.) But everyone with whom we talk keeps passing the buck to someone else.