Grid-tied system. 4.4 kWp in 12 360W panels, half on a north-facing roof plane at 15 degree pitch, and the other half facing west at 45 degrees. This gives an elongated peak to the production curve, from noon to about 4 pm, and in the longest days of summer we're still generating at 8 pm. Enphase micro inverters with Envoy grid tie controller. We do net metering and the retailer pays us about 6.5c / kWh and charges 4-5 times that for what we use, so the other piece of the system is an interactive controller to sense whenever the panels are generating more than our aggregate load, and divert that excess to the hot water cylinder to create a thermal battery.
Here is what today looked like:
Good sun most of the time, with some cloudy periods shown by the dips. The blue is generation and the orange is consumption. The grey is import from/export to the grid of the excess in either direction and you can see how in the early afternoon the hot water reached its max (70 degrees) and at that point we started selling to the utility (boo). If the EV hadn't already been fully charged we would have plugged it in around 1 pm and taken advantage of all that juice.
Oh, and the system all up, including installation, was $14K NZ (~ $10K US) in October 2020. We financed it with our savings pool, so no interest.