Power
various
Around Brisbane with at least one major supplier, it depends on how big the transformer is for that street. In the case of a friend of mine in Brisbane his street is strictly limited to 5kw per household. He found this out after signing up for, paying for and installing a 8kw system after being told by the power company that this was ok. (At present 3kw of panels are installed but not connected.)
He is in the process of designing a micro controller based system that can switch panels in and out of the circuit depending on his own household power usage, and the sunlight conditions to make sure that the 5KW feed out limit is maintained for as long as possible during the day, but not exceeded (in compliance with the Electricity supplier's 5KW rules).
There are 3 other visible large installations in neighbouring homes (about 5kw)
This limit may increase in future as the mains and pole transformers are upgraded.