• Offshore Technology reported on 30 September 2026 that SLB OneSubsea won the subsea production systems contract for the first phase of Rovuma LNG, awarded by ExxonMobil Moçambique on behalf of the Area 4 partners.
• The scope is subsea trees, manifolds, umbilicals and control systems, plus engineering, procurement, manufacturing and installation services. The contract value was not disclosed.
• The project is sized at 18.6 million tonnes per year of LNG, drawing on three fields in the Mamba complex of Area 4.
• The Offshore Technology report does not give a final investment decision. Lusa, via AMAN, reports ExxonMobil reiterated in August 2026 an intention to decide before the end of the year, which is an intention and not a decision.
• Watch for an announced FID, offtake agreements and the financing package. Those decide whether the molecules ship.

SLB OneSubsea has won the contract for subsea production systems on the first phase of Rovuma LNG in Mozambique's Rovuma Basin, Offshore Technology reported on 30 September 2026. The award is progress on equipment procurement. It is not evidence that the project's financing is closed, because the report does not mention a final investment decision. The distinction matters for anyone sizing how much Mozambican LNG may reach the market, and when. This is analysis, not trading advice.

What the contract covers

According to Offshore Technology, the contract covers subsea trees, manifolds, umbilicals and control systems, together with engineering, procurement, manufacturing and installation services. It was awarded by ExxonMobil Moçambique on behalf of the Area 4 partners. The report does not disclose a contract value or the number of trees, so the physical size of the order cannot be judged from it. SLB OneSubsea's chief executive said the award reflects the company's ability to deliver integrated subsea solutions.

Why a supply contract is not an investment decision

A contract award shows that procurement is being lined up, while a final investment decision is the point at which partners commit capital to build. Offshore Technology's report gives no FID date. Lusa, carried by AMAN, reports that ExxonMobil reiterated in August 2026 an intention to take the decision before the end of the year. That is a stated intention, and until a decision is announced the project is announced, not financed.

The scale of the project

Offshore Technology sizes Rovuma LNG at 18.6 million tonnes per year, developed from three fields in the Mamba complex within Area 4, in a basin it says contains more than 85 trillion cubic feet of natural gas. It reports development plans were submitted in July 2018 and approved by the government in May 2019. The seven years from approval to this contract show how slowly large LNG build-outs move from permit to procurement.

Who holds the stakes

Offshore Technology reports that Area 4 is held 70% by Mozambique Rovuma Venture, which combines Eni, ExxonMobil and CNPC, with ADNOC's XRG, KOGAS and ENH holding 10% each. The report does not describe offtake arrangements for any partner, so where the LNG will be sold is unconfirmed. Ownership alone does not show who will buy the cargoes, and offtake contracts are what lenders typically want to see before financing closes.

What to watch next

The next real signals are an announced FID, the financing package and offtake contracts. The Journal of Petroleum Technology reports ExxonMobil has lifted force majeure on the project as security concerns eased, clearing the way for an anticipated 2026 decision. Subsea hardware is a necessary piece, but liquefaction capacity and buyers determine when cargoes load. Treat any start-up date as unconfirmed until the operator announces a decision.