Scottish Ultra-Low Emission Bus Scheme

This Scottish Ultra-Low Emission Bus Scheme (SULEBS) is an evolution of the Scottish Green Bus Fund held each year between 2011 and 2018. SULEBS supports the Scottish Government’s net zero targets, its commitment to delivering Low Emission Zones and Scotland’s ambitions for transport decarbonisation.  

A round of SULEBS of £9 million launched on 19 August 2020

Support is available for the purchase of new buses, and assists with 50% of the cost differential between a standard diesel bus and the equivalent ultra-low emission bus. This can rise to a maximum 75% support of the differential for buses depending on their zero emission running capability. Support is also available for the infrastructure for this technology of up to a maximum 75% of the capital cost.

Please note that SULEBS is open to new full size single and double decker buses for operation on registered local bus services.

For full details and rules about the scheme please see the SULEBS Guidance document.

To assist in your bid for SULEBS, accompanying the Application Form (Annex A) we have created an online calculator and assessment sheet (Annex B), which must also be completed. Please also refer to the Application Form Guidance (Annex C).

Applications and the supporting evidence required must be sent to

The closing date for all application is midnight 6 September 2020.

If you have any questions, please email Transport Scotland at