You can make the most of solar panels without a battery by setting your household devices to run in the middle of the day, when you’re most likely to generate solar power. Any power you don’t use can be sold back to the grid, then you can offset these payments against your energy bills.
However, if you want to store the energy you generate for your own use, it’s best to add a battery to your setup. Adding a battery to your installation in Southampton could save you about £1,435.68 per year compared to £984.65 without a battery.