TULSA, OK / ACCESS Newswire / August 7, 2025 / ClearSign Technologies Corporation (NASDAQ: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that support decarbonization, improve operational and energy efficiency, enable the use of hydrogen as a fuel and enhance safety while dramatically reducing emissions, today announced that the Company has received a purchase order for the engineering and computational modeling of an enhancement to the ClearSign process burner technology for anticipated implementation into a process heater in a California refinery.

"We are encouraged by the continued engagement and pipeline of work from this early adopter customer and we are pleased to support their commitment to improving air quality and efficient operations," said Jim Deller, Ph.D., Chief Executive Officer of ClearSign. "This enhancement to our combustion technology is another example of the rapid technology development enabled by our engineering and computational modeling capabilities, and we believe that it demonstrates our focus on product diversification and expansion, clean combustion and enhancing operational efficiency."

The supply and installation of this new technology is contingent on the successful completion of this initial engineering and computer modeling. The anticipated date for the installation and start up of the new technology has not yet been set, but it is expected to be completed early 2026, and to be done in coordination with other ongoing projects with this customer.

About ClearSign Technologies Corporation
ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, the use of hydrogen as a fuel and overall cost-effectiveness. Our patented technologies, embedded in established OEM products as ClearSign Core™ and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. For more information, please visit www.clearsign.com.

For further information:
Investor Relations:
Matthew Selinger
Firm IR Group for ClearSign
+1 415-572-8152
mselinger@firmirgroup.com

Cautionary note on forward-looking statements
All statements in this press release that are not based on historical fact are "forward-looking statements." You can find many (but not all) of these statements by looking for words such as "approximates," "believes," "hopes," "expects," "anticipates," "estimates," "projects," "intends," "plans," "would," "should," "could," "may," "will" or other similar expressions. While management has based any forward-looking statements included in this press release on its current expectations on the Company's strategy, plans, intentions, performance, or future occurrences or results, the information on which such expectations were based may change. These forward-looking statements rely on a number of assumptions concerning future events and are subject to a number of risks, uncertainties and other factors, many of which are outside of the Company's control, that could cause actual results to materially differ from such statements. Such risks, uncertainties and other factors include, but are not limited to, the Company's ability to successfully complete engineering orders for its customers; whether the California refinery customer that submitted a purchaser order for the engineering and computer modeling of an enhanced process burner technology will issue corresponding equipment and installation orders for such technology following the successful completion of such engineering order; the Company's ability to generate equipment and installation orders following initial engineering orders from customers; the Company's ability to successfully deliver, install, and meet the performance obligations of the Company's burners in the California and Texas market, and any other markets the Company may sell products in; the Company's ability to further expand the sale of ultra-low NOx process and boiler burners; the Company's ability to successfully perform engineering and equipment supply orders; general business and economic conditions; the performance of management and the Company's employees; the Company's ability to obtain financing, competition; whether the Company's technology will be accepted and adopted and other factors identified in the Company's Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission and available at www.sec.gov and other factors that are detailed in the Company's periodic and current reports available for review at www.sec.gov . Furthermore, the Company operates in a competitive environment where new and unanticipated risks may arise. Accordingly, investors should not place any reliance on forward-looking statements as a prediction of actual results. The Company disclaims any intention to, and, except as may be required by law, undertakes no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which the Company hereafter become aware.

SOURCE: ClearSign Technologies