its my understanding (from what a green friendly electrician explained to me) that a smart meter detects the power usage in a certain line, how much is being read on meters, and notes the difference in an attempt to track down power being stolen by pharmers. as long as the bill is paid they really could not care less that your growing, a buisness savy mind would encourage people to grow in order to reap the profits!
in fact, a study from FL showed in 2009(?) 90% of busts were stealing power, leading me to believe there is a strong corrolation between stealing power, smart meters, and being busted.
where i live there is an indoor crop for every 100 people in this town (stats courtesy of co-op) and the busts are far and few between (maybe 1 in 50 steal power) most recently busted was someone stealing another growers plants, after first grower had passed away.
hope this helps some
Ccoastal