Nano scale Liquid BioMethane solutions at Samso

Field to ferry concept liquefaction solutions presented at Samsø Workshop in June as inspiration for coastal communities

Samsø Energy Academy usually houses workshops on how to involve local communities in transitions towards a future free of fossil fuels. A workshop with a rather nerdy focus on biogas liquefaction technology and economy is not everyday standard for the Academy, but it was a great success.

- It is possible to liquefy biogas in small quantities, says Knud Tybirk, Samsø Kommune, after the workshop at Samsø in June 2017. Investors find this a huge uncertainty when talking about the Field to Ferry concept at Samsø, but we can now see several solutions for this challenge, he continues.

Samsø Municipality had through GO-LNG and Biogas 2020 projects and in cooperation with Danish Biogas Network and Innovation Network for Biomass organized the workshop at Samsø Energy Academy. 31 attended the workshop from 8 countries and a panel was gathered to give feed back and evaluate the proposed solutions.

The challenges are both technically and economically, as liquefaction of methane hitherto primarily has been used for large scale liquefaction of shalegas or other fossil methane sources for export in vessels. However, a new market is developing for biogas as fuel for ferries, and the Samsø case with a LNG fuelled ferry and specific plans for a biogas plant to fuel the ferry was the background for the workshop.

The challenge given to the presenters on beforehand was: Who can provide Samsø with the best solution for upgrading and liquefaction of around 3-500 Nm3 biogas /hour?
Kosan Crisplant presented the bunkering solution for the Prinsesse Isabella ferry and then in turn CryoPur from France, Pentair/StirLNG for the Netherlands, NærEnergi from Norway/Denmark and Wärtsilä (Finland) presented their solutions for the panel.

The panel consisted of representatives from the Samsø Shipping, Samsø Harbours, Samsø Technical Department, and experts from Planenergi and Kosan Crisplant.

There were different combinations of technologies and different options in terms of flexibility and the outcoming products. Some of the technologies can deliver liquid CO2 as well as a side product, others can deliver process heat for the biogas plant.

The conclusions of the day are not straightforward, but it was very inspiring to have gathered this expertise at Samsø. The combination of technologies together with the developing international market for green fuel certificates will be quite determining in the following process of choosing the gas-pathway and the precise business model for Samsø.

However, a main constraint for the Field to Ferry concept in Denmark is that the feed-in tariff for biomethane for transport is lower as compared to biomethane for grid-injection.

- We had crucial input for our coming business model and decision making process, so we are very inspired and satisfied, said Søren Stensgaard from Samsø Municipality after the workshop.

Here you can find the presentations from the workshop.