I agree with the guy who said it doesn't matter what the tenant has done to the landlord. The landlord needs to serve a cure/quit notice to turn off electricity. Period. End of story. He can't just do it, especially if it's paid up in full.
Again, this is a power hungry landlord. It's HIS place and he'll do whatever the hell HE wants to. Even if this is a holdover tenant, you can't just turn off the electricity on him. You have to evict him. It sounds like the only notice was the notice to non-renew his lease with the 30 days notice.
For those thinking the tenant was in the wrong because he paid partial electric bills? I agree, ideally he should've paid in full, but again, you have to post a cure/quit notice. You can't just act without explaining to the tenant what you're doing and why you're doing it.