Don't sweat an extra $30 or even extra $50 ... that's likely not even going to be noticed. ~$100 electric bills is common even for small dwellings.

If your bill goes up from like $50 to like $300, that may be noticed and acted upon ... but as redneck1 posted, they're primarily focused on theft not increased power usage alone unless it's way, way high causing excessive load on the transformer, etc.

Some growers get by with less lighting ... see if you can run your grow on 400W or so of lighting ... that may limit what you'd planned on, but may still be workable depending on your situation / needs.

Ron