Bio-CNG powered city buses in Tallinn, Estonia fueled by Bright’s technology and Bioforce

15 December 2022
City buses in Tallinn, Estonia run on bio-CNG fueled by Bright's biogas upgrading technology and commissioned by energy company Bioforce OU. The bio-CNG production site in Aravete has been operational since March this year and recently has been expanded. A new bio-CNG production facility will be built in Ebavere and is expected to be completed in the third quarter of 2023. Through virtual pipeline technology, the bio-CNG is transported to filling stations where buses can refuel.

Driving Sustainability with Bio-CNG

Capacity at the Aravete facility was expanded this year from 800 Nm3/hr ingoing biogas to 1,000 by adding membranes. Capacity expansion to 1,200 Nm3/hr ingoing biogas is scheduled in the near future. Project Ebavere will be capable of taking in 800 Nm3/hr biogas and is expandable to 1,200 Nm3/hr. Martins Dombrovskis, Area Sales Manager at Bright: “Bio-CNG is one of the great usages of biomethane that can be relocated to anywhere. With our local team in Latvia, and the team in the Netherlands, we are proud to be the technology provider to Bioforce for the realization of domestic production and usage of biomethane”.

Bio-CNG for the transport sector

Bioforce supplies the bio-CNG for Tallinna Linnatransport AS, a company owned by the city of Tallinn, and is dedicated to the utilisation of clean fuels in Estonia.

“The transport sector has a key role in reducing greenhouse gas emissions. One way to make Estonian transport sector more sustainable is to use renewable natural gas. We are strongly committed to driving this cleaner future for this sector in Estonia and are happy to take up this challenge with Bright to achieve this goal”, says Henry Uljas from Bioforce.

“Bio-CNG is one of the great usages of biomethane that can be relocated to anywhere.”
Henry Uljas from Bioforce

Virtual pipeline

In these projects, first biogas is produced from anaerobic digestion of cow manure. This needs to be purified and compressed before reaching the state of bio-CNG. Bright supplies the biogas upgrading system with membrane technology to upgrade biogas to biomethane. After compression to bio-CNG, the fuel can be stored and transported. Through a virtual pipeline, the bio-CNG is transported to the Peterburi Street CNG filling station in Tallinn. Virtual pipeline is a technology used at production sites where no pipeline, grid infrastructure or filling station is available.