Originally Posted by
xafalcon
Yes, payback was about 3.5 years. I have 20KW of solar panels, 60-70KWh of battery storage, and the ability to discharge batteries to the grid. I designed and installed the system myself, bought panels cheaply by the pallet load from installers quitting superseded stock, and built the storage batteries myself using EV batteries. Cost us about $24K all up, but built in stages over 4 years to spread the cost
Each year we save $3K in electricity, $3K in petrol and get $2K from the electricity company. We are now fully paid off
Get a quote from a company that let's you help do the install, and don't get a quote from Harrison's as they are OTT expensive. Don't get a battery, build a big 10KW system and export during summer and use that credit during the winter. And use your electric hot water cylinder as a battery (there are devices that automate this function). You should get a 6-7 year payback, maybe even 5 years