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‘New For Old’ Offer on Biomass from 1st October 2018 – and keep your existing RHI tariff!

Donkey Boiler

On 29 May 2018 the UK Government gave its long-awaited response in respect of non-domestic RHI on replacement biomass plant. Thankfully, the answer was ‘yes’.  Starting 1 October 2018, you will be able to continue to claim non-domestic RHI if you replace your biomass boiler ‘like-for-like’.

Like-for-like refers to technology type and capacity. So, you can install replacement biomass plant to replace a boiler that is causing you problems. But you will lose your RHI if you switch technologies, for example from biomass to ground source heat pump, or heat pump to biomass.

So, for replacement biomass plant with an installation that has a greater heat capacity, your RHI claim will be restricted to the capacity in your original RHI accreditation. Any additional capacity will not be eligible for RHI. However, you will retain the tariff level from your original accreditation.

So, if you installed a biomass system when tariffs were 9p per kilowatt hour, you can replace your boiler and continue to receive the 9p tariff for the remainder of the 20-year accreditation. There are also guidelines setting out the RHI implications if you put in a lower capacity boiler than the original.

The government response says that, with one exception, replacement plant will be ‘subject to the same accreditation criteria as applied to the original installation’.

The one change to the accreditation criteria is air quality standards. All replacement plant must meet current air quality standards, even if the original application did not need to do so.

Replacing your biomass plant

We’d be very happy to visit you to help you assess whether it’s worth you replacing your current biomass boiler, or other biomass plant. Our team has huge experience in installing new biomass boilers as well as servicing, maintaining and indeed repairing other installers faulty plant. 

If you’d like any advice on the changes, or to discuss boiler or plant replacement, please talk to us now on 01752 26 26 26 or email

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