Hi

Not sure I understand, but you have a generation tariff which you will be paid for surplus energy you don’t use. Many people put them on second homes because they get paid for the unused energy exported out while the house is not in use, the same is true with your home. You don’t have to use the energy to benefit from the energy they generate as you can import/export as opposed to just importing as per standard homes. The amount you get paid for exporting is dependent on the tariff rate you signed up too.

Another option is to heat your hot water with your PV for free using this system:

Hope this helps.