TULSA, Okla., April 19, 2023 — ClearSign Technologies Corporation (Nasdaq: CLIR) (“ClearSign” or the “Company”), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions,

announces the receipt of a purchase order to complete the detailed engineering of burners for two process heaters in a California refinery.


“We are very pleased to receive this order for a number of reasons.” said Jim Deller, Ph.D., Chief Executive Officer of ClearSign.  “Most importantly, this is a repeat order from an existing customer who came to ClearSign, and our ClearSign Core burner technology to provide an alternative option given complexities associated with implementing a traditional selective catalytic reduction (“SCR”) NOx control technology. While at this time whether this project proceeds into an equipment supply is not in our control, it is very much appreciated that our technology is being recognized for the efficiency and emission control capabilities that we provide.”


This refinery was an early customer and has ongoing experience with the operation and performance of the ClearSign burner technology. This purchase order states that the procurement and fabrication of burners may be added at a later date, or not at all.  If this order does continue to the supply of our equipment, it would displace an existing SCR system and help the refinery adhere to the stricter emissions regulations in California.


About ClearSign Technologies Corporation


ClearSign Technologies Corporation designs and develops products and technologies for the purpose of improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety 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.


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 our control, that could cause actual results to materially differ from such statements. Such risks, uncertainties and other factors include, but are not limited to, our ability to successfully complete the detailed engineering of our burners in the California market within the expected time frame, whether this purchase order for a detailed engineering of our burners will become an equipment for supply of our burners in the future, general business and economic conditions, the performance of management and our employees, our ability to obtain financing, competition, whether our technology will be accepted and adopted and other factors identified in our Annual Report on Form 10-K filed with the Securities and Exchange Commission and available at www.sec.gov and other factors that are detailed in our periodic and current reports available for review at www.sec.gov. Furthermore, we operate 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. We disclaim any intention to, and, except as may be required by law, undertake no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which we hereafter become aware.


For further information:


Investor Relations:

Matthew Selinger

Firm IR Group for ClearSign

+1 415-572-8152