Montreal satellite-data company that operates and develops emissions-monitoring spacecraft and related analytics services.
Operating context
GHGSat turns satellite and aircraft spectroscopy into facility-level emissions intelligence. Its satellite instrument measures short-wave infrared methane absorption at approximately 25 m ground sampling distance; wind information and atmospheric inversion convert observations into emission-rate estimates. SPECTRA provides data and API access, with published delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Weather, wind and detection conditions affect interpretation. Its POSEIDON role concerns methane and LNG-vessel emissions within a wider maritime-pollution consortium. NASA’s 2026 commercial-data award is a shared procurement framework, not a company-specific US$476 million sale. Earlier C$47 million financing combines convertible notes and debt, providing industrial context without implying an all-equity round.
Canadian footprint
GHGSat has a documented Canadian operating presence in Montreal, Quebec, Canada. Its public organization and capability evidence should be read at that location and national scope only where the cited sources explicitly support it.
Montreal, Quebec is the published city-level context for GHGSat. It does not imply a street address or exact facility location.
High-resolution greenhouse-gas remote sensing and analytics
Read technical summary
GHGSat combines satellite and aircraft methane observations with SPECTRA analytics and API delivery. Satellite sensing uses short-wave infrared spectroscopy at approximately 25 m sampling, with emission estimates dependent on wind and atmospheric inversion. Its satellite threshold claim is 100 kg/h; aircraft figures near 3.5–3.6 kg/h at stated test conditions describe a different instrument. A Stanford-led controlled-release study independently quantified a 0.20 t/h release within 13% for one GHGSat observation. That result is site- and test-specific, not a universal accuracy guarantee.
Evidence of maturity
Operational emissions-data services with independent satellite controlled-release evidence and supplier-described aircraft validation. Cloud cover, scheduling, wind and scene conditions limit acquisition and interpretation.
Commercial availability
Commercial satellite, airborne and analytics services are offered. Specify measurement layer, detection probability, wind/scene conditions, tasking and delivery window; revisit opportunity is not guaranteed usable daily coverage.
Core features
Distinct satellite and aircraft methane measurement services
SPECTRA visualization and API data delivery
Published delivery windows of 24 hours after overpass and 48 hours after aircraft flight
Wind-dependent emission-rate inference with independent controlled-release evidence
Recorded applications
Industrial emissions detection and verification
Remote infrastructure monitoring
Environmental compliance and response
Wide-area screening followed by targeted observation
NASA named GHGSat among awardees for commercial satellite data acquisition on June 18, 2026. The contract’s US$476 million ceiling is shared across 14 awardees; individual task-order revenue is not established by the announcement.
The publicly described Satellite-based remote sensing and analytics offering may be relevant to monitoring or remote-operation use cases; this is a derived mapping for reviewer assessment.
Reviewed connections indicate possible relevance based on public evidence. They do not indicate procurement direction, eligibility, endorsement or customer interest.
Questions for a first conversation
01
What observation probability, wind uncertainty, revisit schedule and delivery commitment apply to the facilities or vessel routes being monitored?
Emission estimates depend on viewing and atmospheric conditions; a nominal sensor threshold or revisit capability alone does not establish usable coverage.
Original sources 8 linked records
These records support the organization, its owned capabilities and their reviewed connections. A source count is not a count of independent confirmations.
GHGSat uses a short-wave infrared Fabry–Pérot imaging spectrometer, approximately 25 m ground sampling distance at 500 km altitude, to derive methane column densities and combine them with wind data for kg/hour emission estimates. SPECTRA delivers API-accessible data, with stated delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Its 100 kg/hour satellite threshold is distinct from airborne sensitivity and is condition-dependent.
GHGSat uses a short-wave infrared Fabry–Pérot imaging spectrometer, approximately 25 m ground sampling distance at 500 km altitude, to derive methane column densities and combine them with wind data for kg/hour emission estimates. SPECTRA delivers API-accessible data, with stated delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Its 100 kg/hour satellite threshold is distinct from airborne sensitivity and is condition-dependent.
GHGSat uses a short-wave infrared Fabry–Pérot imaging spectrometer, approximately 25 m ground sampling distance at 500 km altitude, to derive methane column densities and combine them with wind data for kg/hour emission estimates. SPECTRA delivers API-accessible data, with stated delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Its 100 kg/hour satellite threshold is distinct from airborne sensitivity and is condition-dependent.
GHGSat uses a short-wave infrared Fabry–Pérot imaging spectrometer, approximately 25 m ground sampling distance at 500 km altitude, to derive methane column densities and combine them with wind data for kg/hour emission estimates. SPECTRA delivers API-accessible data, with stated delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Its 100 kg/hour satellite threshold is distinct from airborne sensitivity and is condition-dependent.
GHGSat uses a short-wave infrared Fabry–Pérot imaging spectrometer, approximately 25 m ground sampling distance at 500 km altitude, to derive methane column densities and combine them with wind data for kg/hour emission estimates. SPECTRA delivers API-accessible data, with stated delivery windows of 24 hours after satellite overpass and 48 hours after aircraft flight. Its 100 kg/hour satellite threshold is distinct from airborne sensitivity and is condition-dependent.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing · name
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing · core features
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing · capability type
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing · core features
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing · core features
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing → Autonomous Patrol and Monitoring
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing → Autonomous Patrol and Monitoring
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing → Autonomous Patrol and Monitoring
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
Supports: High-resolution greenhouse-gas remote sensing → Autonomous Patrol and Monitoring
GHGSat distinguishes DATA.SAT facility-scale methane sensing from lower-threshold DATA.AIR. Published service windows are24hours after satellite overpass and48hours after aircraft flight via SPECTRA/API. Methane emission rates depend on wind/inversion;25m sampling is not a universal source-location or quantification accuracy guarantee.
The official capability material supports the named Satellite-based remote sensing and analytics offering and the bounded operational description prepared for reviewer consideration.
GHGSat reported C$47 million in financing comprising convertible notes led by Yaletown with FTQ and BDC participation and debt led by National Bank with EDC support. The total combines debt and convertible instruments, not ordinary equity alone.
GHGSat announced participation in the KSAT-led POSEIDON Horizon Europe consortium, a €5 million three-year programme involving ten partners. GHGSat’s role concerns methane and LNG vessel emissions, rather than every optical/radar pollution-sensing task of the consortium. The release’s 25-square-metre wording conflicts with the technical page’s approximately 25 m ground sampling distance; the technical specification is retained.
NASA names GHGSat among fourteen CSDA On-Ramp 2 IDIQ awardees. The USD 476 million original maximum belongs to the multiple-award programme, with performance through November 15, 2028; NASA does not allocate that ceiling to GHGSat or disclose its individual task-order value.
Supports: Profile · operating context
Public sources cited · Facts and assessments kept separate · Human review
The official company material describes GHGSat as a Canadian technology business with the public offering summarized in this candidate.
Supports: Profile · editorial profile version
GHGSat has sufficient mapped public evidence for private reviewer consideration of the shared editorial profile template.
Supports: Profile · canadian footprint
The official capability material supports the named Satellite-based remote sensing and analytics offering and the bounded operational description prepared for reviewer consideration.
GHGSat's public evidence establishes its current role and offering, but it does not answer every access, configuration, eligibility, maturity or buyer question needed for a first business-development conversation.
The official capability material supports the named Satellite-based remote sensing and analytics offering and the bounded operational description prepared for reviewer consideration.
NASA names GHGSat among fourteen CSDA On-Ramp 2 IDIQ awardees. The USD 476 million original maximum belongs to the multiple-award programme, with performance through November 15, 2028; NASA does not allocate that ceiling to GHGSat or disclose its individual task-order value.
Supports: Profile · current activity as of
NASA names GHGSat among fourteen CSDA On-Ramp 2 IDIQ awardees. The USD 476 million original maximum belongs to the multiple-award programme, with performance through November 15, 2028; NASA does not allocate that ceiling to GHGSat or disclose its individual task-order value.
Industrial emissions detection and verification; Remote infrastructure monitoring; Environmental compliance and response; Wide-area screening followed by targeted observation
Canadian satellite and aircraft remote-sensing system for detecting and quantifying facility-scale greenhouse-gas point sources, supported by high-resolution imaging spectrometers, analytics, and next-generation instrument demonstration work.
GHGSat June23 2026 says Gen2 DATA.AIR obtained METEC testing and MiQ compatibility assessment at3.5kg/h with90% detection probability. Its technology FAQ separately states3.6kg/h at3m/s wind. Treat figures as test-condition dependent and obtain the underlying report; aircraft thresholds do not apply to satellites.
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