bioLNG plants – Small scale biogas liquefaction technology


Wärtsilä offers the energy efficient Mixed Refrigerant Liquefaction technology for small scale liquefaction capacities. Our fast track engineering model with this technology results in low investment costs and short manufacturing time.

Biomethane / Renewable Natural Gas to bioLNG

The biomethane liquefaction process uses mixed refrigerant technology, where one single MR compressor and one aluminum plate-fin heat exchanger are the main components in the system. A standard chiller (pre-cooling unit) is incorporated to improve energy efficiency and to ensure stable operation of the MR process.

Wärtsilä provides the basic complete process package, to which can be added civil engineering and construction services. The biogas liquefaction plant can also be supplied as an EPC delivery. Once installed, Wärtsilä further offers Operation & Maintenance agreements that are tailored to the customer’s specific needs.

As a forerunner in gas and multi-fuel engines, fuel systems, technology and services, Wärtsilä wants to participate in the global shift to gas also with LNG and bioLNG infrastructure projects. We focus especially on developing the small-scale LNG value chain together with our customers, offering technology both for natural gas and biogas liquefaction and also regasification systems.

What sets Wärtsilä apart from competitors is the scope and quality of our services. In addition to the actual technology, we have unique capabilities to assist our customers on the path from idea to successful business.

By choosing Wärtsilä to supply a complete solution, you have a reliable and trustworthy partner for the whole lifecycle of the investment.

Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers.

Our Global Network

Puregas Solutions AB

Torsåsgatan 3A
392 39 Kalmar
Tel: +46 (0) 480 77 00 00

Puregas Solutions Ltd

Enterprise Park East
Sunderland SR5 2TA
Tel: +44 (0) 191 516 6662

Puregas Solutions GmbH

Deichstrasse 1
20 459 Hamburg
Tel: +49 (0) 160 906 629 51

Puregas Solutions AS

Birkemose Allé 39
6000 Kolding
Tel: +46 (0) 7016 44 312

Wärtsilä North America Inc

117101 N. Gessner Rd,
Suite A, Houston,
TX 77064,

Tel: +1 281 233 6200

Wärtsilä Gas Solutions

Solbraavn 10
1383 Asker
Tel. +47 81 54 85 00