Using biogas as vehicle fuel has a carbon saving of -97 kgCO²eqv
Following an analysis of different uses for biogas, Bristol-based research firm Eunomia has found using biogas to power vehicles had the lowest carbon footprint. Using biogas on-site in a combined heat and power (CHP) plant was next, then pumping gas into the grid was the next most efficient, according to a report from Lets Recycle. Consultant Ann Ballinger observed that despite use as a vehicle fuel being the most carbon efficient way of using biogas, and therefore having the most positive impact on climate change, there was no government support.
Ms Ballinger’s research found that when the carbon impacts of treating one tonne of material using AD are analysed, the following carbon savings could be made:
- Using biogas as vehicle fuel has a carbon saving of -97 kgCO²eqv
- Using biogas on-site has a carbon saving of -86 kgCO²eqv
- Pumping biogas straight to the grid has a carbon saving of -85 kgCO²eqv
- Using biogas to generate electricity has a carbon saving of -62kgCO²equivalent
Ballinger added: “The transport sector accounted for 21% of the UK’s energy needs in 2008 and transport is a neglected sector in terms of impacts.”
She explained that gas-fuelled vehicles emitted less CO² and used less fuel than traditional fuels such as petrol and diesel. Other advantages of gas fuel include less noxious emissions and quieter vehicles.
Eunomia expects to publish its full research into biogas in a report looking at the best way to treat organic waste across Europe, which is set to be published later this month.
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