Wärtsilä LNG regasification solutions

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Wärtsilä offers a range of regasification technologies

To use liquified natural gas (LNG) for purposes like fuel, power generation, heating and cooking, the LNG must be converted back to its gaseous state. This process is known as regasification, and typically takes place where LNG carriers discharge their cargo.

Wärtsilä Gas Solutions offers a range of regasification technologies for floating storage regasification units (FSRUs), barges, jetties, and onshore terminals. Our portfolio represents an industry benchmark in terms of energy efficiency, robustness, and operational flexibility.

Our track record includes delivery and commissioning of numerous floating LNG regasification plants based on either closed loop regasification technology, using steam with water/glycol as the intermediate heating medium, or open loop regasification technology using sea water with propane as the intermediate heating medium. In FSRU projects, Wärtsilä also offers engineering for the complete conversion – including integration of regasification modules like BOG compressors and power module, along with all the other systems for cargo handling, upgrading and utilities.

Our modularised regasification plants for jetty installations facilitate a much shorter construction time compared to conventional land-based terminals.

    Technical data

    • Wärtsilä’s regasification units are available either as multi-skid deliveries, or as complete turnkey and single-lift topside modules
    • Train size: 50 mmscfd up to 280 mmscfd. Higher capacities with multiple trains
    • Delivery pressure:  Designs from 5 to 125 bar possible
    • Temperature NG outlet: Typically, 5 C below seawater temperature
    • Example module size: 3x250 mmscfd, 25x18x12m, 700 tons


    • FSRU’s (LNG Carriers)
    • Barges
    • Jetties
    • Onshore terminals


    Key benefits

    • Supplied by a market leader with extensive reference list
    • Fast delivery (12-16 months)
    • Compact and reliable plant
    • Modularized delivery (easy installation)
    • Flexible plant configuration
    • Easy operation and maintenance
    • Quick ramp up/down

    Press releases

    Wärtsilä Regas modules supplied for China’s first new built FSRU

    May 12, 2020, 10:00 by Wärtsilä Corporation
    The technology group Wärtsilä has successfully managed and completed delivery of three large-scale regasification modules for China’s first new built LNG Floating Storage Regasification Unit (FSRU). The vessel, the ‘Transgas Power’, was built at the Hudong-Zhonghua shipyard in Shanghai for Greek operator Dynagas. Delivery of the modules was completed on March 28 and the FSRU was launched two days later.
    Wärtsilä designed the modules and sourced the required equipment, including valves and instruments, from suppliers around the world. The contract to fabricate the units was awarded to the Cosco shipyard in Qidong, China in September 2018. The work has been managed and coordinated from Wärtsilä’s office in Asker, Norway. The completed products were delivered on time and with high quality.
    “Building Regas modules is something of a jigsaw puzzle. However, thanks to detailed planning, excellent teamwork, open communication, and great cooperation we delivered the project to the client’s full satisfaction and on schedule. We always aim to be the best possible partner to our customers, which apart from offering technical solutions at the highest level, involves listening closely to the client, and striving always to fulfil his expectations,” says Project Manager Geir Kirkemo, Gas Solutions, Wärtsilä Marine.
    “A big thank you to the Wärtsilä project team for their great efforts and good work that has been performed. You have gone the extra mile for us, and the cooperation has been smooth, allowing us to make a successful delivery of the ship to the owner,” says Ms WenQing Zang, Manager Supply Department at Hudong-Zhonghua.
    The three regasification modules weigh 450, 80, and 240 tonnes. In addition, Wärtsilä also supplied related regasification equipment comprising pumps, heat exchangers, valves, and instrumentation for installation in the engine room. A second FSRU being built at the same yard for Dynagas, also featuring Wärtsilä regasification modules, is scheduled for delivery in mid-July 2020.
    The original contract with Wärtsilä was signed in September 2017. The regasification system supplied is based on the use of seawater and steam as energy sources, and water/glycol as the energy carrier in a combined loop. The plant consists of three trains, each with a capacity of 250 million standard cubic feet per day (mmscfd) or approximately 500 m3/h, and a common suction drum. 
    Wärtsilä LNG Regasification technologies are noted for their efficiency, robustness, and operational flexibility. They are available using either closed-loop technology, utilising steam as the energy provider, open-loop with seawater as the energy provider, or combined loop using both. The intermediate heating medium can be water/glycol or propane. Wärtsilä also offers modularised regasification plants for jetty installations.
    Image caption: The Wärtsilä modules, here being moved onto a barge, were delivered from the Cosco yard to arrive in Shanghai in time for the scheduled launch of the vessel. Copyright: Logistic Plus.
    Media contacts:
    Mr Sylvain Fabreguettes
    Product Line Manager
    Gas Solutions
    Wärtsilä Marine
    Tel: +47 90412622
    Ms Marit Holmlund-Sund
    General Manager, Positioning, Marine Business Marketing
    Wärtsilä Corporation
    Tel: +358 10 709 1439
    Wärtsilä in brief:
    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. In 2019, Wärtsilä’s net sales totalled EUR 5.2 billion with approximately 19,000 employees. The company has operations in over 200 locations in more than 80 countries around the world. Wärtsilä is listed on Nasdaq Helsinki.


    15 Nov 2022 · Article
    6 min read
    Bring in the Energy
    Examination of the development of water glycol heated regasification systems for use on FSRUs and offshore jetties.
    Grasping the potential
    8 Nov 2020 · Article
    5 min read
    Grasping the potential
    Kjell Ove Ulstein and Per Helge Madsen, Wärtsilä Gas Solutions, AS, Norway, review the latest trends occurring in the LNG...

    Contact our 24/7 customer support at +47 815 48 500. For spare parts, please e-mail us with the equipment serial number or the name of the installation at moss-spares@wartsila.com (Inert Gas Systems) spares.wgs@wartsila.com (all other products) 
    For technical support & service, please email us with the equipment serial number or the name of the installation at services.wgs@wartsila.com.
    Equipment serial number is taken from the equipment nameplate and includes all letters and numbers as given on the equipment nameplate.

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