Green Hydrogen and DAC – A Powerful Combination
Alongside the wide range of activities around hydrogen production, transport and use, Canada is increasingly focusing on how to offset unavoidable residual emissions. While CCS is already used in the production of blue hydrogen, another approach goes a step further. Direct Air Capture (DAC) draws CO₂ directly from the ambient air. The technology pairs well with hydrogen production, showing how climate technologies can be combined synergistically. The hydrogen produced and the CO₂ captured can together serve as feedstocks for renewable products – such as the production of synthetic fuels.
DAC is gaining significant momentum in Canada. The federal government is working on a dedicated protocol for Direct Air Carbon Dioxide Capture and Storage (DACCS) and has earmarked 135 million CAD for the procurement of permanent carbon removal services. The combination of a clear policy framework and geological suitability for CO₂ storage makes Canada a central testing ground for whether DAC can become a key pillar of climate policy at industrial scale – a potential that Canadian company Deep Sky Climate is determined to turn into reality.
DAC and Hydrogen Production in One Plant
In January 2024, Deep Sky announced the conclusion of a contract with German start-up Greenlyte Carbon Technologies (GCT). The aim of the collaboration is to install a facility using GCT technology in the so-called 'Alpha Lab' – a test site for various CO₂ capture systems – in the province of Québec.
The Greenlyte Carbon Technologies process works in three main steps:
- Absorption: CO₂ from the ambient air is absorbed into a liquid sorbent solution.
- Precipitation: The absorbed CO₂ is precipitated as bicarbonate and concentrated.
- Desorption via electrolysis: In an electrochemical process, the bicarbonate is decomposed, simultaneously producing concentrated CO₂ streams and hydrogen.
According to the companies, the planned facility will be able to capture up to 100 tonnes of CO₂ per year from the atmosphere. Deep Sky's long-term vision goes far beyond this: the Alpha Lab is intended to eventually be scaled – together with additional systems – to a capacity of up to one gigatonne of CO₂ per year, a volume comparable to the total greenhouse gas emissions of Germany.
For the operation of the facility, Deep Sky intends to use the vast hydropower capacities and wind potential of the Québec region. The site was also selected based on geological criteria: it has suitable subsurface formations for long-term CO₂ storage.
Conclusion
Canada has the natural resources, the industrial base and the political will to become one of the world's most significant production and export hubs for hydrogen. The strategy is in place, the first major projects are under construction, and the first international supply chains are taking shape.
But the road ahead remains demanding. The critical question will be whether Canada can make the transition from pilot project to industrial scale in time. The example of Deep Sky Climate and Greenlyte points to where the journey could lead: away from isolated individual technologies, towards integrated approaches – conceived across both technologies and borders. If that succeeds, Canada has the potential to become not just an exporter of hydrogen – but of climate technology.