Ultra Low Emission Bus Certificates

This page displays the Ultra-Low Emission Bus 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.

Further information on ULEB Certificates

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

CaetanoBus

Models

eCity Gold, H2.City Gold

Status

ULEB status achieved for eCity Gold. Potential certification of City H2 in the future.

eCity Gold

Technology: Battery Electric
Passenger capacity: 65
Fuel: Average UK Grid for 2020
WTW greenhouse gas emissions: 386.3 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 65%
Battery capacity: 350kWh
Zero emissions range: 376km
WTW CO2e per passenger km: 5.9 g CO2e / pass km

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H2.City Gold

Technology: Hydrogen Fuel Cell

Contact
Email Website
Yutong
Models

E10/E12, TCE 12 Coach

Status

ULEB status achieved for both models. Expecting certification of 420 kWh version in Q2/Q3 2020

E10/E12

Technology: Battery Electric
Passenger capacity: 75
Fuel: Average UK Grid for 2019
WTW greenhouse gas emissions: 566.3 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 52%
Battery capacity: 295kWh
Zero emissions range: 196km
WTW CO2e per passenger km: 7.6 g CO2e / pass km

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TCE 12 Coach

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

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Contact
Email Website
WAVE Industries / BKM
Models

300 series, 400 series

Status

ULEB status achieved for 400 series with supercapacitors

300/400 series

Technology: Super Capacitor Electric with Pantograph Charging
Passenger capacity: 87
Fuel: Average UK Grid for 2019
WTW greenhouse gas emissions: 521.1 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 61%
Super capacitor capacity: 29kWh
Zero emissions range: 29km
WTW CO2e per passenger km: 6.0 g CO2e / pass km

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Contact

Website

Alexander Dennis
Models

Enviro 400H, Enviro 200EV, Enviro 400EV

Status

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

Enviro 400H

Technology: Diesel-Hybrid
Passenger capacity: 87
Fuel: Average UK Grid Electricity
WTW greenhouse gas emissions: 824.7 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 37%
Zero Emissions Range: <1km
WTW CO2e per passenger km: 9.5 g CO2e / pass km

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Enviro 200EV

Technology: Battery Electric
Passenger capacity: 65
Fuel: Average UK Grid Electricity
WTW greenhouse gas emissions: 438.4 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 61%
Zero Emissions Range: <300km
WTW CO2e per passenger km: 6.7 g CO2e / pass km

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Enviro 400EV

Technology: Battery Electric
Passenger capacity: 83
Fuel: Average UK Grid Electricity
WTW greenhouse gas emissions: 704.7 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 45%
Zero Emissions Range: 286km
WTW CO2e per passenger km: 8.5 g CO2e / pass km

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Contact

Website

Irizar - e-mobility

Technology: Battery Electric

Status

Awaiting certification.

Contact

Website

Optare

Models

Metrodecker EV

Status

ULEB status achieved for Optare Metrodecker EV

Metrodecker EV

Technology: Battery Electric
Passenger capacity: 98
Fuel: Average UK Grid for 2019
WTW greenhouse gas emissions: 452.2 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 68%
Battery Capacity: 250kWh
Zero Emissions Range: 223km
WTW CO2e per passenger km: 4.6 g CO2e / pass km

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Contact

Website

Scania

Technology: Battery Electric, Hybrid

Status

Awaiting certification.

Contact

Website

Volvo

Models

7900EV

Status

ULEB status achieved for Volvo 7900 EV. Awaiting certification of B5LH in 2020.

7900EV

Technology: Battery Electric
Passenger capacity: 87
Fuel: Average UK Grid for 2019
WTW greenhouse gas emissions: 398.4 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 70%
Battery Capacity: 157kWh
Zero Emissions Range: 146km
WTW CO2e per passenger km: 4.6 g CO2e / pass km

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Contact

Website

Wrightbus

Models

StreetDeck HEV, StreetAir

Status

Awaiting Certification.

StreetDeck HEV

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

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StreetAir

Technology: Battery Electric
Passenger capacity: 69
Fuel: UK Grid Electricity (2018)
WTW greenhouse gas emissions: 596.62 g CO2e/km
WTW saving compared to Euro VI diesel equivalent: 47%
Zero Emissions Heating Solution included
Zero Emissions Range: Heating on: 141.9 km / Heating off: 218.9 km
WTW CO2e per passenger km: 8.6 / 5.6 g CO2e / pass km

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Contact

Website

Infrastructure & Fuel Providers

The provision of infrastructure is crucial to the operation of a number of Low and Ultra-Low Emission Buses. Often infrastructure can be the greatest challenge when deploying new technologies, can have the longest lead time and involve a wide range of stakeholders beyond the manufacturer and operator. The integration of additional equipment and the knowledge and training required to understand the safe operation requires attention to ensure an effective operation. 

The following Zemo Partnership members provide infrastrucuture solutions that support the operation of Low and Ultra-Low Emisison Buses:

Electric Infrastructure

Different manufacturers offer different charging solutions for battery electric and plug-in hybrid buses. Each solution will have its advantages depending on the type of operation, topographies and even local culture. The following Zemo Partnership members provide a variety of solutions with case studies across the UK:

Depot and On-route / Opportunity Charging (OppCharge)
  • Furrer+Frey
  • ABB (Electrical Infrastructuer Provider)
  • Irizar (Bus Manufacturer)
  • Wrightbus (Bus Manufacturer)
Depot based charging solutions
  • FlexiSolar (On-site storage and charging solutions)
  • Off-Grid Energy (On-site storage and charging solutions)
  • ADL/BYD (Bus Manufacturer)
  • Yutong (Bus Manufacturer - supplied by Pelican Bus and Coach)
  • Optare (Bus Manufacturer)

Biomethane

Biomethane can be supplied to a depot through two methods; via the mains gas grid or in compressed form delivered by truck or tanker. In order to minimise costs, a permananent grid connection is favoured in the long term.

Ther are two refuelling infrastructure models to suppport the operation of biomethane buses. These are often dependent on the location of the depot in regards to a local gas main and the size of the fleet of buses being refuelled.

Procure and Operator or Wet Leasing?

Operators have a choice when choosing biomethane as a fuel as to how they wish to pay for the infrastrucuture and supply of fuel. The operator can buy the refuelling equipment outright and pay for a grid connection, along with the metered gas and green gas certificates.

Biomethane Operators
  • CNG Services
  • RoadGas
  • Gas Bus Alliance
  • Gasrec
Hydrogen Operators
  • ITM Power
Biodiesel Operators
  • Argent Energy
  • Greenergy
  • Portland Fuel
Join Us

If you want to get involved in the work of one or more of Zemo Partnership's Working Groups, why not join us, or contact the Secretariat for more information.

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