What is a solar PV export limitation?

When in the planning and design stages of a solar PV project, you may come across the term export limitation. Essentially the process involves fitting a device to cap exported power going from the solar system to the grid. But why would you want or need one? Read on to find out... What is export limitation?

Are export tariffs a good idea for solar PV?

For homes with solar photovoltaic (PV) panels, export tariffs like the SEG are a great way to bolster your energy bill savings. In this article, we'll explore how the SEG works, the benefits for solar PV system owners, and how it's shaping greener living in the UK.

What if a PV system exports too much power?

This is the maximum amount of power the system is allowed to export onto the grid. If the balance between PV generation and self-consumption reaches a point where the system might export more than this value, then the Cluster Controller or Sunny Home Manager can tell the inverters to limit their production.

Can a 6kW PV system be exported?

Let’s say you apply for a 6kW PV system (inverter rating) without battery storage, and the grid says you can have a 6kW system installed but with export limited to 4kW. This means on a perfect sunny day at peak production if the system is generating 6kW, and you are using 4kW in your home, the surplus 2kW will be exported.

Can a PV installation reduce your electricity bill?

With export limitation the installation owner can reduce their electricity bill with a PV installation without the extra cost of upgrading the grid infrastructure. The PV installation will never export more than the allowed power onto the grid.

How do I export electricity to SEG?

Your property must have a valid Energy Performance Certificate (EPC) rating of D or above. Once these conditions are met, you can apply for a special export tariff with an SEG licensee, who will then pay you for any excess electricity you generate and export back to the grid.