The Biomass Suppliers List (BSL) was introduced by the Department for Business, Energy and Industrial Strategy (BEIS), formerly the Department of Energy and Climate Change (DECC), in April 2014.

It supports the Government's Renewable Heat Incentive (RHI) scheme by ensuring that RHI payments are only issued to biomass boilers using wood-fuel that meets certain sustainability and fuel quality requirements.

The tabs on the left-hand side provide further information on the scheme and these eligibility requirements. 

From 1st July 2021 the BSL is administered on behalf of BEIS by Woodsure.

What is the BSL?

The Biomass Suppliers List (BSL) is a list of Renewable Heat Incentive (RHI) eligible wood fuels. Fuel types registered on the BSL include: logs; woodchip; wood pellets; and wood briquettes.

The aim of the BSL is to provide RHI participants with a simple way to demonstrate that their fuel complies with the RHI Sustainability and Fuel Quality Criteria for wood fuel.

The RHI Sustainability Criteria focuses on two elements: sustainability and legality.  Fuel quality assurance is provided by recognised fuel quality schemes that enable a supplier to demonstrate that they have systems in place to produce fuel to a particular fuel quality.

To register their fuel on the BSL, biomass suppliers must demonstrate that their wood-fuel is at least 60% less carbon intensive than the average EU fossil fuel equivalent and that it meets the UK Timber Standard for Heat and Electricity's definition of legal and sustainable wood-fuel. More information on the sustainability requirements can be found under the Sustainability Criteria tab. From the 1st April 2022 the supplier must also have fuel quality assurance.  

When ordering fuel from a supplier you must request they supply you with the type and standard of the fuel you are looking for. The quality assurance scheme they are listed with will provide the assurance of the fuel quality.

Sustainability criteria

To claim Renewable Heat Incentive (RHI) payments, participants must demonstrate that their fuel meets the RHI sustainability criteria of greenhouse gas emissions and land criteria.

The BSL currently recognises ENplus and Woodsure schemes as outlined in the RHI regulations. More information on these schemes can be found under the Fuel Quality tab.

Greenhouse gas emissions

Suppliers must demonstrate that the greenhouse gas emissions generated from the cultivation, processing and transport of their biomass fuel are at least 60% lower than the EU fossil fuel average for heat, when used in a boiler which achieves an average of 70% seasonal efficiency. The emissions limit is ≤34.8g CO2e per MJ. This figure is calculated using the life cycle assessment methodology set out in the European Commission's 2010 report

To calculate their greenhouse gas emissions, suppliers must use either the simple calculator within the BSL application process or the more comprehensive B2C2 calculator, which can be accessed via this link. Information provided during the application process will determine which calculator must be used.

Land criteria

Producers, Traders and Producer-Traders of virgin or virgin/waste blend woodfuel are also required to demonstrate compliance with the land criteria requirements. This confirms that the wood has been legally felled and that the woodland has been sustainably managed. Self-Suppliers and waste fuels (as per the BSL definition of waste) are exempt from Land Criteria.

Full details on the Land Criteria requirements can be found in our guidance documentunder the Documents and Guidance tab.

There are two categories of land criteria compliance:

Category A evidence

If you are able to demonstrate that 100% of your fuel is FSC, PEFC or SBP certified, then you fall under Category A. 

  • FSC certificates must be held in your name or you must be a listed group member / site on the FSC database. 
  • PEFC certificates must be held in your name or you must be listed as a participant in Group Certification FM on the PEFC database.
  • SBP certificates must be held in your name or you must be a listed group member / site on the SBP database.

If your FSC, PEFC or SBP certificates do not cover 100% of your fuel, are for Controlled Wood and/or are not in your name, you fall under Category B.

Category B evidence

There are three ways of demonstrating compliance under Category B:

1. Felling licence and woodland management plan - this is for suppliers who have 100% of their fuel covered by both a felling licence and a UK Forestry Standard compliant woodland management plan. 100% of the raw materials being used must have been sourced from the UK.

2. Risk Based Regional Assessment (RBRA) - this is for suppliers sourcing 100% of their fuel from within the UK but who do not have a felling licence and woodland management plan for 100% of their fuel. An RBRA is a declaration of materials purchased within the UK for the previous calendar year. A UK RBRA template can be downloaded from the Documents and Guidance tab.

3. Bespoke Risk Based Regional Assessment (RBRA) - this is for suppliers who are sourcing some or all of their fuel from outside of the UK and cannot provide Category A evidence. Further information on this option can be found in our guidance document under the Documents and Guidance tab.


Fuel Quality

Fuel Quality FAQ guidance can be found here.

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 of April 2022. The legislation places requirements on both self-suppliers AND commercial suppliers (Producers, Traders, and Producer-Traders).

To assist:

  • Woodsure provides a fuel quality scheme for chip and log. Email: info@woodsure.co.uk or call: 01684 278188 

Whilst the regulation allows for equivalent schemes, none are documented as compatible within the terms of regulation at this time. Any changes regarding this will be highlighted on the BSL Homepage.

Contact the BSL Help desk: Email: bslhelpdesk@woodsure.co.uk; Tel: (+44) 01684 215253 (Open Monday to Thursday, 9:30am to 5pm and to 4:30pm on Friday). 
Alternatively, contact the relevant fuel quality scheme if you have any questions or queries.  

Get in touch

To find out more about the changing requirements you can contact the BSL Helpdesk on bslhelpdesk@woodsure.co.uk


The requirement for continued BSL listing of fuels remains in place but there has been a recent update of Regulation under the Statutory Instrument SO 2021 No 76 where additional fuel quality criteria have been added. For further guidance on applying please visit the following links:

Revisions to the Regulations

The Domestic Renewable Heat Incentive Scheme and Renewable Heat Incentive Scheme (Amendment) Regulations 2021 were laid before Parliament on the 25th January 2021. The legislative changes for BSL authorised fuel suppliers are identified in Schedule 4A


RHI participants

RHI participants 

All domestic RHI participants with boilers under 1,000 kW, who are sourcing woody biomass and wish to claim money under the RHI scheme must use fuel that is authorised on the BSL.

Non-domestic RHI participants with boilers under 1,000 kW, which are sourcing woody biomass can choose to use the BSL scheme to claim their RHI payments, instead of self-reporting to Ofgem.

Searching for a local BSL supplier

If you want to find a local supplier of BSL authorised fuels, please click here.

For more information about using the BSL to claim RHI payments, please click here.

Note that to be eligible for RHI payments, participants need to burn the correct fuel in the biomass boilers, as specified on the Emissions Certificate (EC).  Burning non-compliant fuel may lead to RHI payments being stopped and could void manufacturers' warranties. 

Claiming RHI payments

For Domestic RHI participants, it is mandatory to use a BSL number to claim your RHI payments from Ofgem. Non-domestic RHI participants can either use a BSL number or self-report directly to Ofgem. For further information on the domestic RHI scheme, please click here, and for the non-domestic RHI scheme, please click here.

To make the process of claiming your RHI payments smoother, when purchasing fuel from an authorised BSL supplier, please ensure that the following information is included on your invoice:

  • Name of your supplier
  • BSL Authorisation number
  • Quantity of fuel purchased (in tonnes/kg/m3/net heat/gross heat)
  • Moisture content (% on a wet basis) of the final product (this could alternatively be included in your contract with the supplier)
  •  Fuel type
  •  Date sold
  •  Date delivered / collected
  •  Delivery address
  •  Your name

Please note that the BSL is a mark of fuel sustainability, and that the supplier is also a member of a recognised fuel quality assurance scheme  The BSL itself is not a mark of fuel quality.

For more information on fuel quality and dedicated fuel quality schemes, please go to the Fuel Quality tab on the left hand side.

Privacy policy

This privacy policy sets out how the Biomass Suppliers List (BSL) Administrator uses and protects any information that you give the BSL Administrator when you use this website. The BSL Administrator is committed to ensuring that your privacy is protected. If we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.

The BSL Administrator may change this policy from time to time by updating this page. You should check this page regularly to ensure that you are happy with any changes. This policy is effective from 22 October 2018.

1. What we collect

We may collect the following information:

  • name and job title;
  • contact information including email address;
  • demographic information such as postcode, preferences and interests;  and/or
  • other information relevant to the BSL and customer satisfaction surveys.

2. What we do with the information we gather

We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

  • Internal record keeping.
  • We may use the information to improve our services towards our role as BSL Administrator.
  • We may periodically send emails about changes to documentation, products, services or other information which we think you may find interesting using the email address which you have provided.
  • From time to time, we may also use your information to contact you for industry research purposes.
  • We may contact you by email, phone or mail. We may use the information to customise the website according to your interests.

3. Security

We are committed to ensuring that your information is secure. In order to prevent un-authorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

4. Links to other websites

Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

5. Controlling your personal information

You may choose to restrict the collection or use of your personal information in the following ways:

  • Whenever you are asked to fill in a form on the website, look for the box that you can click to indicate that you do not want the information to be used by anybody for direct marketing purposes.
  • If you have previously agreed to us using your personal information for direct marketing purposes, you may change your mind at any time by writing to or emailing us at bslhelpdesk@woodsure.co.uk.

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. The information provided in this Privacy Notice is correct as of October 2018, in accordance with the stipulations in the GDPR and the DPA 2018.

6. General Data Protection Regulation (GDPR) 

The data controller of the Biomass Suppliers List (BSL) is the Department for Business, Energy & Industrial Strategy (BEIS). You can contact the BEIS Data Protection Officer (DPO) at: BEIS DPO, BEIS, 1 Victoria Street, London SW1H 0ET. Email: dataprotection@beis.gov.uk . The BSL is administered by Woodsure on behalf of BEIS. You can contact the Woodsure DPO at: Severn House, Unit 5 Newtown Trading Estate, Green Lane, Tewkesbury. GL20 8HD
Email: bslhelpdesk@woodsure.co.uk

We will be processing your personal data solely in order to administer the BSL. The Biomass Suppliers List (BSL) was introduced by BEIS in April 2014. It supports the Government's Renewable Heat Incentive (RHI) scheme by ensuring that RHI payments are only issued to biomass boilers using woodfuel that meets certain sustainability and legality requirements. This scheme meets the Renewable Energy Directive which was established in 2009 by the European Commission.

The Renewable Energy Directive establishes an overall policy for the production and promotion of energy from renewable sources in the EU. It requires the EU to fulfil at least 20% of its total energy needs with renewables by 2020 – to be achieved through the attainment of individual national targets. Biofuels and bioliquids are instrumental in helping EU countries meet their 10% renewables target in transport. The Renewable Energy Directive sets out biofuels sustainability criteria for all biofuels produced or consumed in the EU to ensure that they are produced in a sustainable and environmentally friendly manner. Companies can show they comply with the sustainability criteria through national systems or so-called voluntary schemes recognised by the European Commission.

With regard to Data Protection, Woodsure's collection and processing of personal data, including disclosure to third parties, is necessary for the performance of our public interest tasks relating to the BSL, pursuant to Article 6.1 e) of the GDPR.
Where you are providing your personal data in connection with a complaint, it may be necessary to share your personal data with third parties such as BEIS, Trading Standards and UK law enforcement bodies.

The data you provide will not be transferred outside the European Union, but data published on the BSL may be accessed outside the European Union if it is published on the BSL website.

Where information is obtained as part of our public task activities it will be retained for:
as long as it is required under the Renewable Energy Directive (2009/28/EC) , or after the expiry or termination of  the RHI scheme  whichever is the later, unless a complaint has been made in which case we will retain the information for a further 2 years following the resolution of the complaint or where we have advised that there is no further action we can take; or
1 year after our last correspondence with you where an application for BSL authorisation is requested but not fully pursued.
Where information is provided for us to review a complaint it will be retained for 2 years following the resolution of the complaint or where we have advised that there is no further action we can take.
A full list of your rights under the General Data Protection Regulation (GDPR) is provided by the Information Commissioner’s Office (ICO), the UK supervisory authority, and can be accessed at: https://ico.org.uk/for-organisations/guide-to-the-general-data-protection-regulation-gdpr/individual-rights/. We will endeavour to fulfil your request within 30 days, unless it is a complex request, in which case we will notify you within 30 days of the request being made.
The information you provide is not connected with automated individual decision making (making a decision solely by automated means with no human involvement in the process) or profiling (automated processing of personal data to evaluate certain personal aspects about an individual).
You have the right to lodge a complaint with the ICO at any time. Should you wish to exercise that right full details are available at: https://ico.org.uk/make-a-complaint/your-personal-information-concerns/. 
If you would like a copy of the information held on you please write to:     

BSL Administrator
Severn House, Unit 5 Newtown Trading Estate, Green Lane, Tewkesbury. GL20 8HD

If you believe that any information we are holding on you is incorrect or incomplete, please write to us at the above address or email us at bslhelpdesk@woodsure.co.uk. We will promptly correct any information found to be incorrect.

Cookie policy

What are cookies?

Cookies are small files stored in your browser and are used by most websites to help personalise your web experience. Some features on this site will not function if you do not allow cookies. When you first enter our site, we place analytics cookies on your device to help us understand how visitors use our site. We use this to improve your user experience.

How do we use cookies?

When you visit a page on our site, the following types of cookie may be generated:

  • Session cookies
  • Analytics cookies
  • Compliance cookies

Session cookies

We may use session cookies to recognise movements around our site. This helps us remember your selections and preferences and makes your overall experience faster and more user friendly. They do not contain any personal information and are automatically deleted when you close your browser.

Analytics cookies

Analytical cookies allow us to recognise and count the number of visitors to our website, and to see how visitors move around the site when they are using it. This helps us to improve your user experience and the services we provide. No personal information is collected about you or about your computer.

Compliance cookies

Two cookies are used to ensure that the 'cookie information bar' that is initially displayed at the top of each page does not interfere with your experience whilst using this site. No personal information is collected about you or about your computer.

How do I turn cookies off?

It is usually possible to stop your browser accepting cookies, or to stop it accepting cookies from a particular website. But if you do this, some features of our website may no longer work correctly. All modern browsers allow you to change your cookie settings. These settings will typically be found in the 'options' or 'preferences' menu of your browser.

Modal title

Help content