CATAGEN is officially ranked as one of the 50 fastest growing technology companies on the island of Ireland in 2023 by the Deloitte Technology Fast 50 Awards.

This is not the first time that CATAGEN have ranked on the Deloitte Fast 50 list – in 2019 and 2020 we were the 2nd and 4th fastest growing business on the island of Ireland. 

CATAGEN continues to be committed to driving innovation and have more than doubled the size of our team within the last year alone, and this growth is set to continue throughout the rest of 2023.

Also, CATAGEN and fellow Northern Ireland-based net zero industry leaders, Terex and Wrightbus, received £6.27 million funding by the Department for Energy Security & Net Zero through Phase 2 of the Red Diesel Replacement programme, as part of the £1bn Net Zero Innovation Portfolio (NZIP). We have various other innovative Net Zero projects that our teams are working on to drive a sustainable future.

About Deloitte Technology Fast 50 Awards

The Deloitte Technology Fast 50 Awards are renowned as one of Ireland’s leading technology award programs, celebrating the remarkable growth of tech companies across the island.

Now in its 24th year, the Fast 50 program continues to value innovation, entrepreneurship, and excellence, giving a platform to native businesses to be recognised for their R&D efforts and commitment to driving progress in their sectors.

Find out where CATAGEN ranks this year in the Deloitte Technology Fast 50 awards on the 30th of November.


CATAGEN’s mission is to clean and decarbonise the air. We are a pioneering emissions testing facility based in Belfast providing unrivalled metrics to optimise catalyst development and reduce harmful tailpipe emissions.

Our expertise in the mobility sector and global emissions standards has led us to develop our ClimaHtech technologies, which includes Green Hydrogen (not an electrolyser) and Bio-hydrogen Generators, E-fuel, Hydrogen Compression and Carbon Capture to continue to clean and decarbonise the air. CATAGEN’s cutting-edge net zero technologies are shaping the environment of our future by working towards cleaner air for our cities. 

At CATAGEN, we’re not just on the fast track to growth; we’re on the fast track to a cleaner and greener world. Our mission to clean and decarbonise the air remains the driving force behind everything we do. With innovation at our core and sustainability as our goal, we’re shaping the environmental landscape of tomorrow on the island of Ireland and globally.


We are hiring!

We are hiring engineers and technical support to join our team. Together, we can clean and decarbonise the air. Lets work together. Check out our available roles here or send your CV to

No Results Found

The page you requested could not be found. Try refining your search, or use the navigation above to locate the post.