Birchtech Corp.
Birchtech Corp. is a U.S.-based specialty activated carbon and environmental technology company focused on mercury emissions capture for coal-fired power plants and emerging water purification applications. Its core business centers on the patented SEA® process, which is used to reduce mercury emissions at lower cost and with less operational disruption than conventional sorbent injection methods. The company is also building a second growth platform in water treatment, including technologies aimed at PFAS and PFOS contamination. In 2024 and 2025, Birchtech expanded its commercialization efforts through new laboratories, design centers, and additional sales and commercialization personnel.
Fiscal year 2025 · change from previous year
Development 2020–2025
Business
Share of revenuePatented SEA®-based products, systems, and services that reduce mercury emissions from coal-fired power plants.
Developing sorbent-based solutions for potable and industrial water treatment, including PFAS-related applications.
Licensing of patents and related technology rights tied to mercury capture and other environmental applications.
Design center testing, contaminant analysis, carbon performance evaluations, and thermal reactivation support.
Products
Reported · share of revenue- Product Revenue80.7 %
- License Revenue17.9 %
- Equipment Revenue0.8 %
- Demonstrations Consulting Revenue0.5 %
Source: 10-K FY2025, revenue the company reports per product line (SEC XBRL). Shares are of the lines shown and add up to 100 %.
Customers
Birchtech sells primarily to coal-fired utilities and power plant operators that need mercury emissions solutions to comply with environmental regulations such as MATS. These customers buy the company’s systems and sorbents because they want to reduce mercury emissions without materially hurting plant output or byproduct marketability. The company is also targeting municipal and industrial water utilities, especially those facing compliance pressure around PFAS and broader water quality issues. In addition, Birchtech monetizes its patent portfolio through licensing arrangements with utilities and other counterparties. Its customer base is therefore split between regulated industrial operators seeking compliance solutions and water-sector buyers looking for lower-cost treatment technologies.
Buy mercury capture systems, sorbents, and related technical support to meet emissions rules while preserving plant performance.
Buy or evaluate sorbent-based treatment solutions, testing, and design-center services for PFAS and other contaminants.
Enter licensing agreements for use of SEA®-related patents in designated power plants or other applications.
Use lab services, contaminant analysis, and carbon performance evaluations to validate treatment performance before larger deployments.
Strategy
Birchtech is trying to defend and monetize its legacy mercury-emissions platform while building a second growth engine in water treatment. Management is investing in design centers and laboratories to generate technical data, define permitting and capex requirements, and shorten the path to commercial thermal reactivation plants. The company is also expanding commercialization capacity through sales leadership and innovation roles focused on potable water and strategic operations. In parallel, it is using patent licensing and litigation-related monetization to support near-term cash generation. The strategy is to convert technical credibility into recurring commercial adoption across both regulated air and water markets.
This is the main growth initiative and is intended to diversify the company beyond coal-related emissions control.
The existing SEA® platform remains the company’s current revenue base and supports near-term cash generation.
Owning or operating reactivation capacity could improve economics and reduce dependence on third parties.
The company has disclosed substantial doubt language and is pursuing additional cash sources to fund operations.
Geography
Birchtech’s legacy mercury emissions business is centered in North America, which management identifies as the largest market for its emissions technologies. The company’s commercial exposure is therefore tied mainly to U.S. regulatory enforcement, especially the EPA’s MATS framework for coal-fired power plants. It also operates in a cross-border capital markets context, having moved its listing to the Toronto Stock Exchange in late 2024. The new water-treatment initiative is being built from U.S.-based laboratories and design centers, with commercialization expected to expand from that domestic base. No country-level revenue split was disclosed in the provided excerpts.
Risks
Birchtech’s business is exposed to customer concentration and regulatory dependence because its legacy market is tied to coal-fired power plant compliance spending. If environmental rules, enforcement intensity, or coal generation volumes weaken, demand for mercury capture solutions could soften. The company also faces execution risk in water treatment, where it is still in the commercialization and testing phase and must prove performance, permitting, and economics before meaningful scale-up. Liquidity is a material risk, as management disclosed substantial doubt and is relying on litigation proceeds, licensing revenue, and financing to support operations. More generally, the company faces technology adoption risk, patent and litigation uncertainty, and the risk that new water-market demand develops more slowly than expected.
Management disclosed substantial doubt and is relying on litigation proceeds, licensing revenue, and financing to fund operations.
Exposure: Corporate-level funding and operating continuity
The legacy business depends on U.S. coal-plant emissions regulation and utility compliance spending.
The new water platform is still being developed and must prove technical and economic viability before scaling.
Expected cash inflows depend on legal outcomes and licensing adoption, which are not guaranteed.
Exposure: IP licensing and verdict-related proceeds
Accounting
Judgemental itemsLicense fees, product sales, and service revenues likely follow different recognition patterns and can shift quarterly results.
Impact: Affects reported revenue timing and comparability between periods
Changes in the estimated fair value of the non-recourse profit share liability flow through earnings.
Impact: Can materially affect operating and net income without cash impact
Water-treatment development costs began when lab equipment was placed into service, increasing operating expense.
Impact: Raises reported losses during commercialization buildout
Expected judgment proceeds are a major liquidity source but depend on legal realization and timing.
Impact: Can affect cash flow expectations and balance sheet strength
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Last updated: 11/08/2026