‘World’s First’: Methane Removal System Debuts at Sea

Why It Matters

The system tackles methane, a potent greenhouse gas that accounts for a disproportionate share of shipping’s climate impact, while offering operators a pathway to lower compliance costs and generate tradable carbon credits.

Key Takeaways

• Bennu's 50 kg photochemical unit installed on 57,000‑dwt bulk carrier.
• First at‑sea trial removes fugitive methane during normal operations.
• 12‑month pilot aims to validate emissions reductions and cost savings.
• System mimics natural photochemistry, destroying methane before atmospheric release.
• Carbon‑credit certification sought, could offset shipping companies' regulatory taxes.

Pulse Analysis

Global shipping contributes roughly 3 percent of total greenhouse‑gas emissions, but methane, though a smaller fraction, has a warming potential over 80 times that of CO₂ over a 20‑year horizon. International Maritime Organization (IMO) regulations are tightening, and operators face rising carbon‑pricing and fuel‑efficiency mandates. In this climate, a technology that can actively remove methane from a vessel’s exhaust offers a dual advantage: direct climate benefit and a hedge against future compliance costs. Bennu Climate’s partnership with Lomarlabs positions the sector to address this emerging regulatory pressure head‑on.

The pilot unit is roughly one cubic metre in size and weighs 50 kg, making it compatible with existing deck layouts on a 57,000‑dwt supramax bulk carrier. It employs ultraviolet‑driven photochemistry to break methane molecules into harmless by‑products, essentially replicating a natural atmospheric process in a compact industrial package. Unlike carbon‑capture systems that store CO₂, Bennu’s approach destroys the greenhouse gas outright, eliminating the need for long‑term sequestration infrastructure. Early dockside trials in 2024 demonstrated consistent destruction rates, and the current at‑sea test will evaluate performance under real‑world load, weather and fuel‑mix conditions.

If the 12‑month trial confirms the projected removal efficiency, ship owners could claim Gold Standard carbon credits, turning emissions mitigation into a revenue stream. The financial incentive aligns with the IMO’s 2025 carbon‑intensity reduction targets and could lower the effective cost of compliance for fleets that adopt the technology. Moreover, a proven methane‑removal solution would give the maritime sector a scalable tool to address a pollutant that has been difficult to monitor and regulate. Industry analysts expect broader adoption within the next five years, potentially reshaping the economics of low‑carbon shipping.