The whole concept is, you sign up with Amber once you have a battery and sell your excess power directly to them from your battery. So, let’s say you fit a 20kW battery and in summer with air cond and other things use 18kW of the 20kW battery storage that you have over night. So now you have 2kW left over. So you sell that back to the power wholesales at around $0.45 to $0.60 cents per kilowatt. Now you just made around $1.00 in one day instead of a few cents for selling power all day for close to nothing and then spending $0.30 per kilowatt to buy it all back again after dark.

That’s just a couple months of summer when you use most of that battery because of your air cond. In the other seasons when you don’t use your air cond and you may only use 6-8kW of that 20kW battery you now can sell closer to 14kW back to the grid and earn yourself around $7.00 per night. If you multiply that by 7 days a week you are earning around $50 a week for most of the year. How good is that??

You could if you wish go the next level and use the Powston software a “black box” that integrates with your inverter. (Sungrow inverter is the one to use if you want to use Powston) It has a software interface on your computer that allows you to sell power back to the wholesale power company according to the parameters you set in the software. You set how much of your battery capacity you want to sell, between what hours, at what price you will sell it and not before that price is reached, to maximise the earnings from your battery by selling to them when the prices are higher. The Powston product also winds back your inverter if it’s making too much power, that’s not needed during the day in your home, so you don’t get charged for exporting to the grid when export charges are implimented. Powston supports you to sell your power back to Amber or Local-volts at the best sell price.