Ultra Low Emission Bus Certificates

ULEB certification has now been superseded by Zero Emission Bus (ZEB) certification. Buses that are ULEB certified and meet the Zero Emission Bus definition have automatically been certified as Zero Emission Buses. ZEB certificates are available to download via the ZEB Certificates page.

This page displays the Ultra-Low Emission Bus (ULEB) certificates for models approved to receive funding from the Department for Transport's £48m Ultra-Low Emission Bus Scheme. 

ULEB accreditation is required to ensure public money supports proven technologies that will perform in service. Certificates enable local authorities and bus operators to receive government funding under the ULEB scheme. To achieve accreditation and be awarded a certificate, manufacturers must achieve a 30% well-to-wheel greenhouse gas saving compared to a conventional Euro VI diesel over the UK Bus Cycle. Find out more about accreditation here.

Once a manufacturer has proven that a model achieves the ULEB standard, Zemo Partnership and DfT review the certificate and publish it below along with highlights of the vehicle's performance.

Certificates are not required in order to apply for the ULEB scheme, but a manufacturer must achieve accreditation for DfT to release funds to winning bidders. A manufacturer should be able to provide an estimate as to the expected performance of a vehicle of over the UK Bus Cycle. See the Low Emission Bus Certificates for details of performance of previous technologies.

CaetanoBus

Status: ULEB and ZEB status achieved for Caetano eCity Gold

eCity Gold

Status: ULEB and ZEB status achieved

Technology: Battery Electric
Passenger capacity: 65
Fuel: Average UK Grid for 2021
WTW greenhouse gas emissions: 356.2 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 67%
Battery capacity: 385kWh
Zero emissions range: Up to 376km / 235 miles
WTW CO2e per passenger km: 5.5 g CO2e / pass km

Download ZEB Certificate and vehicle summary sheet below

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H2 City Gold

Status: Awaiting Certification

Technology: Hydrogen Fuel Cell

    Website

Yutong

Status: ULEB and ZEB status achieved for Yutong E10/12 models

E10/E12

Status: ULEB and ZEB status achieved

Technology: Battery Electric
Passenger capacity: 70
Fuel: Average UK Grid Electricity for 2021
WTW greenhouse gas emissions: 265.3 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 77%
Battery capacity: 422 kWh
Zero emissions range: Up to 443 km / 276 miles
WTW CO2e per passenger km: 3.8 g CO2e / pass km

Download ZEB certificate and vehicle summary sheet below

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Download summary sheet

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TCE 12 Coach

Status: ULEB and ZEB status achieved

Technology: Battery Electric
Passenger capacity: 50
Fuel: Average UK Grid for 2020
WTW greenhouse gas emissions: 361.7 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 63%
Battery capacity: 281kWh
Zero emissions range: 312km
WTW CO2e per passenger km: 7.2 g CO2e / pass km

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WAVE Industries / BKM

Status: ULEB status achieved for 400 series with supercapacitors

300/400 series

Status: ULEB status achieved for 400 series with supercapacitors

Technology: Super Capacitor Electric with Pantograph Charging
Passenger capacity: 87
Fuel: Average UK Grid for 2019
WTW greenhouse gas emissions: 490.2 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 63%
Super capacitor capacity: 29kWh
Zero emissions range: 29km
WTW CO2e per passenger km: 5.6 g CO2e / pass km

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Website

Alexander Dennis

Status: ULEB status achieved for ADL E400H, E200EV, E400EV. Awaiting certification of E400H2 and E400 ER.

Enviro 400H

Status: ULEB status achieved

Technology: Diesel-Hybrid
Passenger capacity: 87
Fuel: UK Pump Diesel
WTW greenhouse gas emissions: 906.4 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 31%
Zero emissions range: <1km
WTW CO2e per passenger km: 10.5 g CO2e / pass km

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Website

Enviro 400EV

Status: ULEB status achieved

Technology: Battery Electric
Passenger capacity: 65
Fuel: Average UK Grid Electricity 2020
WTW greenhouse gas emissions: 657.7 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 49%
Zero emissions range: <290km
WTW CO2e per passenger km: 7.9 g CO2e / pass km

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Website

Switch Mobility

Status: ULEB status achieved for Optare Metrodecker EV

Metrodecker EV

Status: ZEB status achieved

Technology: Battery Electric
Passenger capacity: 98
Fuel: Average UK Grid for 2021
WTW greenhouse gas emissions: 423.6 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 70%
Battery capacity: 300 kWh
Zero emissions range: Up to 219 km / 136 miles
WTW CO2e per passenger km: 4.3 g CO2e / pass km

Download ZEB certificate and vehicle summary sheet below

Download certificate

Website

Scania

Technology: Battery Electric, Hybrid
Status: Awaiting certification.

Website


Volvo

Status: ULEB and ZEB status achieved for Volvo 7900e

7900EV

Status: ULEB and ZEB status achieved

Technology: Battery Electric
Passenger capacity: 86
Fuel: Average UK Grid for 2021
WTW greenhouse gas emissions: 367.3 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 72%
Battery capacity: 198 kWh
Zero emissions range: Up to 184km / 115 miles
WTW CO2e per passenger km: 4.3 g CO2e / pass km

Download ZEB Certificate and vehicle summary sheet below

Download certificate
Download summary sheet

    Website

Wrightbus

StreetDeck HEV

Status: Awaiting Certification.

Technology: Diesel-Hybrid
Passenger capacity: 99
Fuel: Average UK Pump Diesel
WTW greenhouse gas emissions: 920 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 36%
Zero emissions range: 0km
WTW CO2e per passenger km: 9.3 g CO2e / pass km

Download certificate

Website

Further information on ULEB Certificates

To discuss potential bus models that may qualify for ULEB accreditation, please complete the contact form below. 

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