We provide answers to your questions.

Q: Are biomethane vehicles reliable or will there be teething problems (like with the hybrid electric buses or dual-fuel vehicles)?

A: Gas vehicles are all purpose-built and are in operation for many years across the World. Because gas as a fuel is so much cleaner than diesel, the vehicles have proven themselves to be more reliable. Besides, they require less maintenance than diesel vehicles. For example, New York City has just ordered 800 gas buses! https://www.bloomberg.com/press-releases/2020-09-02/clean-energy-will-provide-renewable-natural-gas-for-new-york-city-mta-buses-to-lower-carbon-footprint-of-nation-s-largest

Q: Aren’t biomethane vehicles more expensive to buy and to operate?

A: Biomethane vehicles often cost 15% more to buy. However, the gas vehicle manufacturers provide full-length leasing packages, unlike electric vehicle providers. Given the substantial savings, the leasing allows you to be actually saving money from Day1.

Q: How can I be using biomethane if the gas arrives on-site through the gas main?

A: We contract to buy the same amount of green gas injected into the grid as you use on-site. We all know that the £5 you withdraw from the bank won’t be the same £5 you deposited there. In our case, the Department for Transport as part of the RTFO scheme verifies the credentials and the quantity of the renewable biomethane fuel.

Q: What’s wrong with using Euro VI diesel, if this is accepted in Low Emission Zones?

A: Euro VI has made a great step forward for diesel in terms of emissions. Rather than focusing on the carbon footprint and global warming, this standard focuses on particulates and NOx.

Furthermore, we now know that the Euro VI test does not accurately duplicate the stresses and strains of heavy traffic in the real world. A 2014 study showed NOx levels were seven times the certified limit and that only 1 out of 15 Euro VI vehicles actually met the standard in a real-world situation.


In the case of a gas engine, because the gas fuel itself is so much cleaner than diesel, particulates and NOx are much easier to control in heavy load situations.

Q: How can we be selling the RTFC certificates when we need them to demonstrate our BSOG LCEB status?

A: Oil companies such as Shell, BP or Exxon Mobil are the only ones that can use the RTFC certificates. However, the stringent process set up by the DfT to generate the RTFC acts as the proof required to demonstrate the green origin of the gas for LCEB purposes.

Q: Isn’t it better to buy hydrogen-fuelled or electric vehicles?

A: In time, hydrogen and electric vehicles may well be the solution. But for now, they are more expensive to buy and have a worse carbon footprint than biomethane. The Low Carbon Vehicle Partnership (a public-private partnership with DfT funding) recently completed a review of the carbon emissions of the different renewable transport fuels. The report concluded that Biomethane, HVO, Biodiesel and Bioethanol were the lowest. Download the report here.

Contact us to find out how you can change to biomethane fuels