ClearSign Technologies Corporation announced that it has finished a full‑scale test of its ClearSign Core 2 burner, a flexible‑fuel device that can operate on 100 % hydrogen. The test, conducted under a Small Business Innovation Research (SBIR) Phase II grant from the U.S. Department of Energy’s National Energy Technology Laboratory, showed NOx emissions below 5 parts per million while the burner ran on pure hydrogen and on a range of hydrocarbon blends.
The Core 2’s performance is significant because it eliminates the need for costly selective catalytic reduction (SCR) systems that many refineries and chemical plants would otherwise install to meet tightening NOx regulations. By achieving sub‑5 ppm emissions on hydrogen, the burner offers a retrofit‑friendly path to cleaner combustion that can be deployed across existing facilities without major capital outlays.
ClearSign’s financial profile underscores the commercial relevance of the breakthrough. The company’s last twelve months of revenue totaled $2.15 million, up 44 % from the prior year, and it reported a net loss of $5.30 million, reflecting ongoing investment in product development. Cash on hand was approximately $9 million, giving the firm a comfortable runway to pursue field installations and scale production. The company’s market capitalization is about $30.6 million, and it has maintained a cash‑positive balance that supports continued R&D and commercialization efforts.
Management highlighted the strategic importance of the Core 2 test. CEO Jim Deller noted that the ultra‑low NOx results and ease of use are unmatched in the market, positioning ClearSign to capture demand from refineries and chemical plants seeking hydrogen‑compatible burners without retrofitting SCR units. The company plans to move from testing to pilot installations in the coming months, aiming to demonstrate commercial viability and secure early customers.
The achievement also aligns with broader industry trends toward hydrogen adoption and decarbonization. By providing a cost‑effective, retrofit‑friendly solution, ClearSign is poised to tap a growing market for low‑emission combustion technologies, potentially accelerating its revenue growth and improving its long‑term profitability prospects.
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