Duration and variations

The tariff levels are fixed for 20 years from the registration date and are adjusted for inflation

How long are the tariffs paid for?

The tariffs last 20 years for all RHI installations. 

Is the tariff fixed for this whole period?

Yes - once you start at a given tariff, it is guaranteed for the full period shown above and is index linked.

How does the index-linking work?

Each year the set level of the tariffs will be adjusted pro-rata to the retail price index. The Tariff adminstrators will publish the updated tariff levels.

The tariffs published initially are shown at 2010 levels so there will be an uplift as soon as the RHI starts in 2011/2012.

How long is the RHI due to run for?

It is expected to be open for new registrations until at least 2020.

Do the tariff levels ever change?

For those who are already registered, tariffs will only change in accordance with the index-linking described above. They are not affected by reviews or degression described below.

For future entrants who are not yet registered, tariff levels might change:

• When the scheme is reviewed (every four years, but the first one to take effect in 2015), or
• Subject to the principle of degression for systems installed after April 2012.