Soletair Power’s HVAC Integrated CO₂ Capturing Unit is a modular carbon capture system that operates plug-and-play. Each unit can capture up to 20 tons of CO₂ per year, equivalent to 3 hectares of Nordic forest aged 30 years, and can be integrated into the building’s HVAC (heating, ventilation, and air conditioning) system. More units can be added to increase the capture capacity. Installation of the system also lowers HVAC energy costs by controlling the building’s ventilation runtime based on CO₂ levels. The unique selling points of the system are its building retrofitability, easy installation, modular design, weatherproof capture, and low water/ heat/ electricity/ material/ carbon footprint.

For a standard ventilation unit handling 3.3 m³/s, each Soletair Power Building-HVAC-Integrated CO₂ Capture Unit can capture ~47 kilograms of carbon dioxide per 8-hour day or 20 tonnes per year. On average, there are about 20 modules per building.

So, each commercial building equipped with Soletair Power’s technology can capture up to 400 tonnes of carbon dioxide per year from the ambient air.

We have installed a system in Wärtsilä Sustainable Technology Hub, Vaasa, Finland, where they have a standard ventilation unit handling 3.3 m³ of air per second. Soletair Power’s CO₂ capture system has a dimension of 3m x 3m x 3m (LWH). So, it is small in land usage since it can operate in buildings.

We are using the Temperature vacuum swing adsorption process in our direct air capture technology. We have our own proprietary Amine-functionalized solid sorbent. From the HVAC system, incoming air is pushed through these sorbent filters, and carbon dioxide is trapped (or adsorbed) by them. When the filter is saturated with these compounds the machine is closed and regenerated via vacuum and heating at 90°C to collect CO₂. Moisture is condensed leaving pure CO₂ for compression. The captured CO₂ is stored in a separate storage container.

When one wants to install this system, their building needs to have an HVAC system. We will inspect where we can install it, whether it should be inside the HVAC room, on the roof, or outside the building. The system will function at its peak when the air coming from outdoors has temperatures around 0° to +25°C. If there is a source of waste heat, for example, from a server room, we can utilize that to obtain the required temperature (below 100°C) for our system. High moisture is typically not a problem. We also need to know the rate of airflow, i.e. how much air the building exchanging per hour. Roughly 1,700,000 cubic meters of air is needed to be ventilated to capture 1 ton of CO₂ by utilizing Soletair Power’s Direct Air Capture system (as of 2023). 

The system itself is fully automated. It can be connected to several IoT sensors and also to the building’s automation system. Signals to external systems can be pushed from our control cabinet and remote operation is possible. We can also monitor and control it remotely through the Internet.

Soletair Power’s direct air capture system is uniquely optimized for integration with urban infrastructures. Compared to most direct air capture technologies, Soletair Power’s system operates at almost zero noise level, making it ideal for installation in buildings.

Currently, existing customers are utilizing the CO₂ themselves for their own R&D purposes. We can help customers have utilization cases with captured CO₂ through our different CO₂ utilization and storage partners. For example, in Dubai, we made the world’s first compact Power-to-X demonstration unit for our customers where we partnered with Q-Power and Wärtsilä.

We can provide CO₂ utilization assistance with our partners; depending on the location of the facility.

Clean and environment-friendly process
Our proprietary sorbent is highly efficient and does not have any hazardous components.

Patented and proven technology
Soletair Power has patents applied and granted in many countries in APAC, US and EMEA region.

Competitive and cost-efficient technology
The technology retrofits with existing HVAC systems inside buildings, making the process cost-efficient.

Compatible with a variety of energy sources
Soletair Power Carbon Capture technology uses mainly electricity. Energy can be obtained from renewable or clean energy like solar and wind, thermal, district heating, heat pumps etc.

Almost no maintenance
There is almost no corrosion or damage; it is almost maintenance-free. The life span of the sorbent is above ten years.

Easy to scale up and applicable to various industries
Commercial buildings, shopping malls, mills, power plants, breweries refineries, farms etc.