Can I feed back into the Grid and what benefit does it really offer

Some municipalities do allow you to feedback into the Grid – although it is quite a bureaucratic process! For domestic users there is no limit at present as to how much you can feed back in (dependant on the municipal district); but for businesses, you are limited to your average monthly consumption over the past 12 months. You will get around 45c per kWh from your electricity supplier – which is currently cheaper than cycling a battery bank for reserve power.