Tariff degression

Plans for tariff changes for people who start later in the scheme

Once a system has been installed and registered for the Feed-In Tariffs, the tariff levels are fixed and subject only to index-linking for inflation as described in our information on duration and variations.

What is degression?

However, some technologies are expected to get cheaper as volumes build in the future, so the Government has decided to adjust some tariff levels for systems installed in future years.

This principle has been established for the Feed-In Tariffs, where the degression levels have been published annually to 2020 as detailed here.

How does it apply to the RHI?

The government wants to adopt a different approach for the RHI, which isn't preset by date, but is triggered by deployment levels.

It hasn't yet finalised how this will work, and will publish and consult on further proposals with Phase 2 of the scheme.