Satellites now detect five million tonnes of leaked methane a year. That is becoming a market

In one year, satellites detected more than five million tonnes of methane venting straight out of oil and gas operations worldwide. That number did not come from a ground survey. It came from orbital spectrometers reading plumes from space, then ran through AI models that decided what was a leak and who owned it.

Counting emissions from orbit

Methane traps far more heat than carbon dioxide in its first decades in the atmosphere, but for years national inventories treated leaks as rounding errors. That gap is closing from space. The instruments fall into two tiers. A global mapper like TROPOMI covers the whole planet and catches only the biggest sources, things emitting more than five tonnes an hour. High-resolution point-source satellites like GHGSat and Tanager-1 find smaller leaks, but over narrower areas.

The detection pipeline has four steps. AI identifies an anomaly in raw spectra. Dispersion models turn a column measurement into an emission rate. Geolocation pins the plume to specific hardware. Then a notification routes the finding to an operator or a regulator. The satellite delivers the image. The value sits in everything after it.

The layer that started billing

For a long time, satellite methane observations served climate science. The turning point is that a second layer formed on top. It sells leak detection, asset screening, emissions attribution, and portfolio risk analysis. GHGSat charges for facility-level scans. Carbon Mapper runs an open data portal. Kayrros packages the same data for regulators and banks.

GHGSat is the clearest case of deployment economics. It has launched a commercial high-resolution constellation, and in 2025 its satellites detected 702 million tonnes of CO2-equivalent methane across 127 countries, with more than 88,000 observations. Its instruments resolve leaks down to a few hundred kilograms an hour, often to individual pieces of equipment. It raised about $44 million in a Series C1, and more than $126 million in total.

The reveal of the economics

The reason demand hardened is that the numbers show up on an operator's ledger. A single vent leaking at a rate satellites can find can cost more than a thousand dollars a day in lost gas. When the median detection finds a large leak, the repair pays for itself within weeks. The customer is buying an estimate of lost cost, not an environmental report.

That is why the market split in two. Facility-level monitoring sells on avoided gas loss and avoid penalties. Inventory and intelligence products sell on accountability and strategy. Different buyers, different margins, different renewal cycles.

Regulation is loading the other side of the ledger. The European Union's methane regulation entered force in 2024, imposing measurement, reporting, and verification duties on operators and, over time, imports. In the United States, the California Air Resources Board runs a satellite methane project with Carbon Mapper. The UN Environment Programme's Methane Alert and Response System now draws on more than 35 satellite instruments to warn governments of large events. None of these programs buys data directly. Each creates the compliance obligation that makes an operator subscribe to whoever can answer the ping.

What receded

MethaneSAT, the flagship non-profit mission from the Environmental Defense Fund, lost power and contact about a year after launch. Recovery is not expected. The arc is still useful. It demonstrated basin-scale quantification no global mapper could match, a niche between facility imagers and wide-area mappers, and left archive data regulators still cite. A non-profit-funded demonstrator delivered science-level output without a price tag.

The other adjustment is that many satellite providers still deliver raw spectra and not the decision layer. A plume is not a charge. The operator that buys a dashboard without attribution or an alert carries a billable file.

Who arrived

Consolidation ended the first phase. Energy Aspects completed the acquisition of Kayrros in May 2026, folding its satellite and AI analytics into a data business at a time when verified intelligence about energy flows is in demand. Carbon Mapper leverages Planet's Tanager satellites to publish data publicly and run a emitter-emitter program. The roster also includes Bluefield Technologies, Orbital Sidekick, Spire, and others competing on hardware.

Market sizing reflects the mood. One analyst house projects the analytics market to grow from about $1 billion to roughly $4.5 billion by 2034, a compound annual growth rate near 15 per cent. The figure is an estimate, not fact. The direction matters more than the precision.

The comparison that matters

Where the money flows

The investment case is no one building more satellites. It is inside the workflow between an observation and an action. A provider with a constellation still retrieves the algorithms, the attribution, the dashboard, and the human review that turns a plume into a repair order. The firms that own that chain capture the recurring subscription. The firms that sell imagery alone compete on price against free public data.

Who pays the subscription

The buyers sort into three groups, each with a different reason to pay. The largest is the oil and gas operator that wants to avoid penalties and lost product. A pipeline network can carry hundreds of compressor stations and valves, and a single unmonitored failure compounds across a portfolio. For these firms, satellite scans replace a slower, more expensive ground rotation with a recurring pass over the same footprint.

The second is the financial one. Lenders and insurers are starting to price methane intensity into credit and premiums, because a leak is reputation risk and future regulatory charge. An investor screening a private asset or a bank underwriting an energy book wants independent measure, not self-report. That is where the "ground-truth intelligence" phrase in the deal starts to make sense as a product promise.

The third is regulators and states. The UN's system, launched on more than 35 satellite instruments, was already alerting countries as of the plan, and a minority of alerts drew a government response. Kazakhstan is folding response duties into methane rules. Nigeria runs a gas flare tracker from orbit. California pairs satellite data with Carbon Mapper's open portal. These programs rarely pay the satellite firms, but every rule creates the obligation that turns a one-off buyer into a recurring one.

Signals to watch next

The last two years found the holes in current inventories. The next two test whether the service layer becomes a routine purchase. The test is in repeat orders, leaks fixed inside a standard window, and detections flowing into enforcement rather than into a report people file away.

Sources

The analysis draws on GHGSat's own emissions data, the IEA Global Methane Tracker 2026, and SpaceNews reporting on the sector's funding rounds.