It's insane enough if it was the GC that wants you to pony up, but the POCO? Do they think you have the word "SUCKER!" tattooed on your forehead?
I think you should strip the entire panel down and megger it all, then charge the POCO bookoo bucks for investigating (and repairing if necessary!) the potential damage they did you your switchgear. No shortcuts. No discounts. Charge full-bore rates.
I like that. I did have a energy management controler hooked up. It didn't get turned on.
I guess it would have been worth it to drive the 2 hours each way. I have the paper work on what voltage transformer they said they were going to put in, so I just thought everythig would go fine.