Quick Answer

Your 'gross' solar is all of the electricity produced by your solar system, this is measured by your solar inverter. Your 'net' solar is the excess solar generation (what you don't use yourself) which is sent to the grid (you receive a rebate for this power known as the Feed-in Tariff (FiT). This power is measured on the same electricity meter as your household consumption.

When you're on aurora+, you'll see your 'net' solar displayed on your app, so you'll know how much solar you're exporting each day down to the hour.