ClearSign Technologies Corporation Receives Follow On Purchase Order For California Refinery Multi Heater Project

Project Timeline Moved Forward

Tulsa, OK /PRNewswire/ - 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, today announces that the Company has received the purchase order to proceed with the next phase of the twenty burner project announced on March 29, 2022 for a California refinery.

The purchase order is for the purchase of four burners for testing, the multi burner test and other ancillary items. The timing and scope of this order is due to the acceleration of the project timeline. The engineering and computer modelling for this project has been completed and the remaining timeline for this project has been accelerated. The Company expects an additional purchase order for the manufacture and supply of the remaining sixteen burners during the fourth quarter of this year.

"We are encouraged to have been notified that this project timeline has been shortened," said Jim Deller, Ph.D., Chief Executive Officer of ClearSign. "We are looking forward to having another significant installation of our best in class ultra low NOx technology in the ever important California market, and this time in two heaters of a notable refinery. I also thank our partner Zeeco Inc. for seamlessly working with us and our client through the full engineering, fabrication, and scheduling requirements of this top tier project."

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 enrgy (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 install our burners in the California refinery and complete the anticipated project within the updated timeline, 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, 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, undertake no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which the Company hereafter becomes aware.