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 to provide solutions and maintenance for Höegh FSRU and LNG vessels

    Apr 4, 2017, 12:30 by Wärtsilä Corporation

    The technology group Wärtsilä has been contracted to provide both equipment and maintenance for FSRU and LNG carrier vessels of Norway based operator, Höegh LNG. The orders were booked in the first quarter of 2017.

    Two new 170,000 m3 LNG carrier vessels being built for Höegh LNG at the Samsung Heavy Industries (SHI) and Hyundai Heavy Industries (HHI) shipyards in Korea will each be powered by four Wärtsilä 50DF dual-fuel engines. There is an option for a further three vessels in the SHI series.

    The two vessels will also feature the latest Wärtsilä regasification technology to operate as FSRUs. The regasification solution to be supplied to these vessels represents Wärtsilä’s latest development in this field. It is based upon the use of seawater and glycol as the intermediate heating medium, a lighter and less space demanding alternative than earlier systems with a propane based heating system. By using seawater as opposed to steam heated solutions, the CO2 emissions are notably reduced. Furthermore, it will be delivered as a complete module, thereby making installation easy. Typically the value of regasification projects is between 20 to 40 MEUR, based on the size, scope, capacity and operational profile of the equipment.

    Under a new five year technical management agreement, Wärtsilä will provide support for eight ships of the company’s existing fleet as well as for its two new vessels currently under construction. The services of the technical management agreement include Condition Based Maintenance (CBM) to optimise the availability, reliability, and performance of the Wärtsilä engines. It also includes maintenance planning and advisory services involving the combined technical expertise of both Wärtsilä and Höegh LNG specialists. The customer will also have access to Wärtsilä’s extensive global service network.

    “Our long-standing relationship with Höegh LNG is again strengthened through this supply of our state-of-the-art engines and regasification systems, as well as the technical management agreement that will ensure optimal performance of the company’s entire fleet,” says Cato Esperø, Sales Director, Wärtsilä Norway.

    “We have confidence in Wärtsilä as a provider of well designed and engineered solutions, and are pleased with the choice of a strong provider as regards to the engines and regasification systems” says Øivin Iversen Chief Technical Officer Höegh LNG. The technical management agreement is also very important. Wärtsilä’s CBM service enables excellent predictability of the engines’ condition and maintenance requirements, which is of great value to our operations,” says Gorm Hillgaar, Senior Vice President Fleet Management Höegh LNG.

    Wärtsilä 50DF engine:
    Designed to give high output with fuel flexibility, low emissions, efficiency and reliability, the engine can be run on either natural gas, light fuel oil (LFO), or heavy fuel oil (HFO). It can smoothly switch between fuels whilst operating and is designed to provide the same output regardless of the fuel. The Wärtsilä 50DF engine operates on the lean-burn principle, enabling a high compression ratio, which in turn increases engine efficiency, reduces peak temperatures, and therefore also reduces NOx emissions.

    Wärtsilä LNG Regasification
    Wärtsilä’s portfolio of LNG regasification technologies represents an industry benchmark in terms of energy efficiency, robustness, and operational flexibility. The company has delivered and commissioned numerous floating LNG regasification plants based on either closed or open loop regasification technology. Wärtsilä has also delivered modularised regasification plants for jetty installations. These facilitate a much shorter construction time compared to conventional land based LNG regasification terminal projects.

    Link to image
    Caption: The new 170,000 m3 LNG carrier vessels being built for Höegh LNG will feature the latest Wärtsilä regasification technology, Wärtsilä dual-fuel engines and a technical management agreement.

    Media contacts:

    Mr Cato Esperø
    Sales Director, Wärtsilä Marine Solutions & Services
    Wärtsilä Norway
    Tel: +47 90103145

    Ms Marit Holmlund-Sund
    Senior Manager Marketing, Communications, Marine Solutions
    Wärtsilä Corporation
    Tel: +358 10 709 1439


    Wärtsilä in brief:
    Wärtsilä is a global leader in advanced technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2016, Wärtsilä's net sales totalled EUR 4.8 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 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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