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 Stockholm Exergi

 

Video courtesy of Stockholm Exergi 

In March 2025, Stockholm Exergi made a final investment decision (FID) to build the world’s first large-scale bioenergy with carbon capture and storage (BECCS) project using Capsol’s carbon capture technology.

The milestone represents a major validation of Capsol’s technology and marks the transition of the project into the construction phase. The FID is one of four major post-combustion carbon capture investment decisions globally in 2025.

Stockholm Exergi will also be the first industrial-scale development of its kind to adopt a non-amine solution. Capsol is at the forefront of next-generation carbon capture solutions, offering lower cost, improved safety and greater operational flexibility, including the ability to deliver heat or energy. In 2024, the R&D Manager for Stockholm Exergi's "Beccs" project, Erik Dahlén, stated in a video interview that heat recuperation was one of the major factors in selecting Capsol’s technology.

The facility will be built at Stockholm Exergi’s Värtan biomass-fired combined heat and power plant in Stockholm. Once operational, the project is expected to permanently remove around 800,000 tonnes of CO₂ per year, creating substantial negative emissions and setting a precedent for similar projects globally. Operations are scheduled to begin in 2028.

The project is supported by strong commercial and policy backing, including funding from the EU Innovation Fund, long-term carbon removal offtake agreements with Microsoft and Frontier, and government support from the Swedish Energy Agency.

For Capsol Technologies, the FID represents an important commercial and technical validation of the company's full-scale CapsolEoP® (end-of-pipe) carbon capture technology. As the first large-scale project to reach investment decision using Capsol’s solution, the project helps de-risk technology choices for future customers and demonstrates the role of carbon capture in enabling scalable negative emissions from biomass and energy-from-waste facilities.

 

U.S. gas turbine project

Image shows the carbon capture solution for gas turbines from Capsol Technologies

In December 2025, Capsol Technologies advanced its gas turbine carbon capture solution for gas-fired power generation through the development of a project with a leading U.S. utility. The agreement grants exclusivity to develop a brownfield gas turbine carbon capture project, marking an important step toward the first commercial deployment of the company's gas turbine carbon capture technology, CapsolGT®, in the North American utility market. 

The project will evaluate the application of CapsolGT® to a simple-cycle gas turbine, targeting more than 95% CO₂ capture directly from the turbine exhaust while reusing waste heat to generate an additional 10-15% of electricity. The technology is designed to deliver low-carbon, dispatchable power without the need for additional steam generation or combined-cycle upgrades. 

Capsol is supporting project development together with Siemens Energy, Black & Veatch and investors, with the aim of advancing the project toward final investment decision (FID). The agreement also includes an evaluation of potential broader deployment of CapsolGT® across additional projects in the utility’s portfolio, highlighting the significant opportunity for carbon capture on gas turbines in the United States power market. 

 

Breakthrough year in cement

 

Image shows the full-scale carbon capture solution for the cement industry from Capsol Technologies

2025 marked a breakthrough year for the company in the cement sector, where Capsol completed its first CapsolGo® demonstration campaign with leading European cement producers. Following the initial cement campaign, two additional test campaigns were completed, bringing the total to three. Collectively, these activities represent an important milestone in validating Capsol’s carbon capture technology in one of the world’s most challenging industrial sectors to decarbonize. This also marked the world’s first successful demonstration of HPC-based carbon capture in cement production.

Today, cement represents the largest sector in the company's mature project pipeline, reflecting strong industry demand for scalable carbon capture solutions. Capsol conducted a CapsolGo® campaign with Holcim at its Dotternhausen cement plant in Germany. The test was conducted under real operating conditions as a de-risking exercise, offering insight into Capsol’s full-scale CapsolEoP® carbon capture technology. The campaign generated operational data and findings to support Holcim’s evaluation of carbon capture as part of its pathway toward low-carbon cement production. Following the learnings from the campaign, Holcim invested in Capsol Technologies in January 2026, further strengthening the partnership. 

Capsol also carried out demonstration campaigns with SCHWENK, first at the Akmenės cement plant in Lithuania, followed by a campaign at the Brocēni cement plant in Latvia, which supported SCHWENK’s assessment of carbon capture solutions across its cement operations.

Before the end of 2025, Capsol also announced a six-month CapsolGo® demonstration campaign with Dyckerhoff, scheduled to commence in Q1 2026, further expanding the company’s engagement with leading cement producers.

Together, the campaigns highlight the role of CapsolGo® as a fast and cost-efficient way for industrial emitters to test carbon capture technologies at site, accelerating progress toward large-scale deployment in the cement industry.