GHGSat, the Montreal company that runs a commercial fleet of methane-sensing satellites, said on November 5 that Mitsubishi Electric’s venture fund, MUFG Bank and London-based Climate Investment bought its convertible notes in October. No amount was disclosed. Climate Investment, which was set up by large oil and gas producers, has backed GHGSat since 2018. The two Japanese names are new, and they matter more than the money.
Why a Japanese bank and a satellite builder
Mitsubishi Electric built GOSAT-GW, the Japanese government greenhouse gas satellite launched in June 2025. GOSAT-GW maps gases over wide areas. GHGSat does the opposite job. Its satellites look at small patches of ground at high resolution and can pin a methane plume to a single facility. Put a wide-area sensor and a pinpoint sensor together and you get a workflow analysts already use in open-source investigation: spot an anomaly from far away, then zoom in and attribute it.
The partners have been building a monitoring service together since late 2024, with Tokyo’s Satellite Data Services. In June 2026 JOGMEC, Japan’s energy and metals security agency, hired Mitsubishi Electric to test the system on real sites, with GHGSat supplying data and analysis. Those tests run through March 2027. Mitsubishi Electric is also studying trials at natural gas and LNG production sites, and the service is due to be shown at Japan’s pavilion at COP31 in Antalya, which opens November 9.
What this means for verification work
Japan imports almost all of its gas, much of it as LNG. Buyers there are under growing pressure to show the methane intensity of the cargoes they buy, and supplier self-reporting is weak evidence. An independent satellite record of which plant leaks and when gives a buyer, a regulator or a researcher something to check claims against. That is the same logic behind ship tracking or night-light data. The source does not depend on the cooperation of the party being watched.
MUFG’s role points at money. A bank that finances LNG projects has a direct interest in measured emissions data that can be written into loan terms. Once lenders price on observed leaks, the satellite record stops being an NGO tool and becomes part of the deal file.
There are limits. High-resolution methane satellites need clear skies and only see a site when they pass over it. A single detection is a snapshot, so repeat passes are what turn a plume into a pattern. Attribution near clusters of facilities still needs ground data or plant records to settle.
Osint.org covered a similar push to bring emissions sensing into the verification toolkit with MUSICO. The GHGSat deal adds a government-linked Japanese buyer and a major lender to the users of this data. Watch the JOGMEC results next spring. If they show plant-level detections that hold up against operator records, satellite methane data will be harder for anyone in the LNG chain to dismiss.