FSRU Meaning: How Floating LNG Terminals Work 2026

FSRU Meaning: What the Term Covers

An FSRU — Floating Storage and Regasification Unit — is a purpose-built or converted vessel that receives liquefied natural gas from LNG cargo carriers, stores it in cryogenic tanks, and converts it back to pipeline-pressure gas for delivery into a national transmission network. Understanding the FSRU meaning is essential for any project developer, procurement manager, or terminal operator evaluating gas import infrastructure in 2026.

FSRUs are permanently moored at a docking facility close to a market access point — either at a jetty or via offshore mooring — and connected to onshore pipelines through floating or subsea hose systems. Unlike a conventional terminal, the vessel itself is the terminal.

How an FSRU Works: The Three Stages

1. Ship-to-Ship LNG Transfer

The FSRU receives supercooled LNG at approximately -162°C directly from standard LNG cargo carriers via ship-to-ship transfer — a process known as ship-to-ship (STS) transfer. The LNG is then held in the FSRU’s onboard cryogenic storage tanks, which typically range from 138,000 m³ to over 173,000 m³ in modern units.

2. Onboard Regasification

Onboard heating systems — most commonly open-rack vaporisers using seawater or closed-loop glycol-water heat exchangers — warm the liquid and expand it back to a gaseous state. This regasification process runs continuously, with modern FSRUs capable of peak send-out rates from 690 MMscf/d up to 1,200 MMscf/d. Excelerate Energy, one of the sector’s leading operators, publishes fleet send-out specifications that illustrate the range across vessel generations.

3. Pipeline Injection

Regasified LNG is delivered at pipeline pressure through high-pressure gas manifolds or subsea buoy systems directly into the onshore national gas transmission network. Depending on the mooring configuration, delivery can also be routed through specially designed offshore receiving facilities before connecting to shore.

FSRU Meaning in Context: Why It Matters for Energy Security

The FSRU meaning extends beyond its technical definition — these vessels function as rapidly deployable national energy infrastructure. When European pipeline gas supply was disrupted following the 2022 Russia-Ukraine war, Germany commissioned multiple FSRUs at ports including Brunsbüttel and Wilhelmshaven within months, a process that would have taken four to six years for equivalent land-based terminals.

A new-build FSRU typically costs under $300 million, compared to several billion dollars for a land-based LNG import terminal of comparable capacity. That cost differential, combined with deployment timelines of one to three years versus four to six, makes FSRUs the default solution for governments managing energy security risk on short notice.

Operators such as Höegh LNG — the world’s largest FSRU fleet operator — charter vessels to sovereign utilities and national gas companies on long-term contracts, removing the need for governments or utilities to own and manage the asset directly.

FSRU Meaning vs FLNG: Key Distinction

An FSRU imports and regasifies LNG; an FLNG (Floating Liquefaction, Storage and Offloading) unit does the opposite — it liquefies gas produced offshore for export. The two vessel types share similar hull architecture but serve entirely different roles in the LNG supply chain. FSRUs sit at the demand end; FLNG sits at the production end.

Who Operates FSRUs in 2026?

The global FSRU fleet is dominated by a small number of specialist operators. Excelerate Energy pioneered the open-access FSRU model and currently operates ten vessels with capacities from 138,000 m³ to 173,400 m³. Höegh LNG, Golar LNG, BW LNG, and New Fortress Energy are among the other major fleet operators, each offering a mix of long-term charter, spot, and hybrid commercial structures.

Emerging market deployments — particularly across sub-Saharan Africa and South and Southeast Asia — are being led by specialist operators including Neptune FSRU, which focuses on markets without existing LNG import infrastructure. New projects continue to advance in 2026, including the Gulf of Gdańsk terminal in Poland and Singapore’s first dedicated FSRU at Jurong Port.

FSRU Meaning: Commercial Structures Explained

FSRUs are typically deployed under one of three commercial models. In a time charter, a utility or government entity charters the vessel for a fixed period — commonly 10 to 20 years — and pays a daily hire rate, taking on volume risk themselves. In a tolling arrangement, the FSRU operator charges per unit of gas processed. In an integrated LNG supply deal, the FSRU operator or an LNG trader bundles the vessel, the LNG cargo, and the regasification service into a single offtake contract.

Understanding these structures is critical for procurement managers and project developers evaluating FSRU bids — the FSRU meaning in a commercial context encompasses not just the vessel technology but the risk allocation across the entire gas import chain.