How much power can I feed into the National Grid (If using Grid-connect inverters)?
The electricity companies restrict grid-tie systems to 3.6kW per phase (ie 10kW for 3 phase). The supply lines will handle a great deal more than this (an average house has a 100A fuse – so you can consume up to 24kW). You can often agree a higher grid-feed limit, but this normally requires a survey – which can cost up to 500.
