Montreal-based GHGSat said Oct. 28 it has made Deloitte Canada’s Technology Fast 50 for a fourth consecutive year, taking the 50th place on a list that ranks Canadian technology companies by revenue growth over four years.
Ottawa’s TACTIQL, a veteran-owned defence software company, ranked second in the program’s Companies-to-Watch category, which ranks younger firms on three years of growth, at 4,395 per cent. TACTIQL builds software that pulls together intelligence, surveillance and reconnaissance data, and is a founding partner in Calian’s Northstar Defence Lab in Ottawa.
Deloitte’s winners list puts GHGSat’s growth at 410 per cent, meaning its revenue is about five times what it was four years earlier.
GHGSat has been in Deloitte’s program every year since 2023, the first two times in a Clean Technology category. It placed second there in 2024 with growth of 3,436 per cent. Deloitte dropped that category in 2025, and GHGSat moved onto the main ranking, placing 24th at 1,240 per cent. Each year’s figure measures growth from a larger starting revenue, so the percentage can fall even as sales keep rising.
GHGSat credits wider partnerships and rising demand from industry and governments for its data. It added four satellites over the past year: C-16 and C-17, which deployed on SpaceX’s Transporter-17 rideshare in July and returned their first methane images soon after, and C-18 and C-19, named Eleanor and Aidan, which launched on Transporter-18 on Oct. 1.
GHGSat also says it observed more than four million facilities worldwide in 2025, and that customers have used its data to cut an estimated 23.5 million tonnes of carbon dioxide equivalent, a measure that converts methane and other gases into the amount of carbon dioxide with the same warming effect. The company likens that to the annual emissions of 5.5 million cars.
“Companies and governments increasingly need accurate, actionable emissions data to power their emissions-reduction goals,” founder and chief executive Stephane Germain said in the release. “We are proud to be delivering it at scale.”
SFL Missions of Toronto is building GHGSat-D2, a demonstration satellite of nearly 100 kilograms for the company’s second-generation satellite, which is meant to spot methane leaks half the size the current fleet can reliably see and is due in orbit in early 2028. Fast 50 winners are automatically eligible for Deloitte’s North American Technology Fast 500, which will be published Nov. 18.