The Biomass Suppliers List (BSL) is a list of woodfuel that has proven it meets the eligibility requirements for the Renewable Heat Incentive (RHI) scheme. It allows RHI participants to easily demonstrate to Ofgem that the fuel they are using in their biomass boilers meets the RHI sustainability criteria required to claim their RHI payments.

New Fuel Quality Requirements

BSL authorisation does not guarantee the quality of the fuel as it is not a quality scheme. Early in 2021 legislation was introduced that made a number of changes to the Renewable Heat Incentive. The changes to the RHI which impact upon accredited Biomass Suppliers List (BSL) fuel suppliers come into effect on the 1st April 2022. The legislation places requirements on both self-suppliers AND commercial suppliers (Producers, Traders and Producer-Traders). Visit the 'Fuel Quality' section in the 'About' tab to find out more about the legislative requirements and take action to ensure your fuels comply.

Waste wood guidelines are now available. This is guidance to help you meet the requirements of the RHI regulations for registrants on the BSL for the 1st April for waste derived wood fuel. Click here to view the guidelines.

New applicants

If you want to register on the BSL, please read the Documents and guidance to find out what type of application you should apply for. When you are ready to apply to the scheme, click here to register tab.

We welcome any feedback regarding the application process. Please take a minute to complete our survey here.

RHI participants

To locate your local BSL supplier, click here.

If you would like to know more about the BSL and the Renewable Heat Incentive, please click here. 

Suspicious Phishing emails, please be on your guard!

Please be aware that the BSL Administrator will never send you an email with an embedded link to your invoice. If you suspect you have received a suspicious communication, purportedly from the BSL Administrator, we advise you not to click on the link or reply to the email.

Please contact the BSL helpdesk on 01684 215253 (Open Monday to Thursday, 9am to 5pm and to 4:30pm on Fridays) if you have any concerns over the legitimacy of an email relating to the BSL. 


Find a Fuel

Please enter your postcode to find a local supplier of BSL authorised fuels, or if you know the company name or BSL number, please enter that into the box below.

Registered Suppliers

If you are already registered on the BSL, please enter your email address and password below in order to gain access to your account.


If you have forgotten your password, please click here

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