Calgary, Alberta -- Questerre Energy Corporation ("Questerre" or the "Company")
(TSX, OSE: QEC) reported successful results from a recent test of its HCCO® oil
shale technology. The test was carried out at the PX Energy facility in southern
Brazil. 

For the first time, the technology was tested in a full commercial-sized vessel,
rather than the smaller lab-scale reactors used previously. The test is an
important step aimed at improving the efficiency, reducing the cost, and
improving the economics of the PX Energy project - and ultimately
commercializing greenfield oil shale projects.

This test was designed to prove the engineering and technical validity of the
Company's patented HCCO process at commercial scale - and it succeeded. The next
step is a longer test with a different purpose - to define the commercial
operating parameters needed to run the process continuously. Based on the
results to date, the Company plans to implement the technology commercially at
the PX Energy facility to reduce the facility's internal fuel oil consumption
and strengthen the economics of the PX Energy project. In parallel, the Company
is already incorporating these results into the design of its planned
small-scale commercial demonstration plant for HCCO technology.

Commenting on the results, Michael Binnion, President and Chief Executive
Officer of Questerre, noted, "This is an important step forward. For the first
time, we have shown that our technology works in a full commercial-sized vessel
- not just in the laboratory. We anticipate this will further bring down our
costs and improve the economics of the PX project. It moves us closer to a
commercial demonstration of HCCO. It also brings us closer to commercializing
the significant resources under Questerre's licenses."

Questerre is an energy technology and innovation company focused on responsibly
developing oil and gas resources. The Company holds a significant natural gas
discovery in the Quebec Utica shale, widely recognized as one of the most
important undeveloped natural gas resources in Eastern Canada. The Company
believes society can successfully transition its energy portfolio. With new
clean technologies and innovation to responsibly produce and use energy, society
can sustain both human progress and the natural environment. 

Questerre is a believer that the future success of the energy industry depends
on a balance of economics, environment, and society. We are committed to being
transparent and are respectful that the public must be part of making the
important choices for our energy future.

For further information, please contact:

Questerre Energy Corporation
Jason D'Silva, Chief Financial Officer
(403) 777-1185 | (403) 777-1578 (FAX) |Email: info@questerre.com

Advisory Regarding Forward-Looking Statements This news release contains certain
statements which constitute forward-looking statements or information
("forward-looking statements") within the meaning of applicable securities laws
in Canada. Any statements about Questerre's expectations, beliefs, plans, goals,
targets, predictions, forecasts, objectives, assumptions, information and
statements about possible future events, conditions and results of operations or
performance are not historical facts and may be forward-looking. Forward-looking
information is often, but not always, made through the use of words or phrases
such as "anticipates", "aims", "strives", "seeks", "believes", "can", "could",
"may", "predicts", "potential", "should", "will", "estimates", "plans",
"mileposts", "projects", "continuing", "ongoing", "expects", "intends" and
similar words or phrases suggesting future outcomes. Forward-looking information
in this news release includes but is not limited to the ability of the test to
reduce costs and improve the economics of the PX Energy project and contribute
to a commercial demonstration of the HCCO technology.

Although Questerre believes that the expectations reflected in these
forward-looking statements are reasonable, undue reliance should not be placed
on them because Questerre can give no assurance that they will prove to be
correct. Since forward-looking statements address future events and conditions,
by their very nature they involve inherent risks and uncertainties. Current
conditions, economic and otherwise, render assumptions, although reasonable when
made, subject to greater uncertainty. Undue reliance should not be placed on
forward-looking information as actual results may differ materially from those
expressed or implied by forward-looking information. 

Events or circumstances may cause actual results to differ materially from those
predicted as a result of numerous known and unknown risks, uncertainties, and
other factors, many of which are beyond the control of the Company, including,
without limitation: the following risk factors: additional funding requirements;
exploration, development, and production risks; volatility in the oil and gas
industry; prices, markets, and marketing of crude oil and natural gas; liquidity
and the Company's substantial capital requirements; prices, markets, and
marketing of crude oil and natural gas; political uncertainty; non-government
organizations; changing investor sentiment; global financial market volatility;
adverse economic conditions; alternatives to and changing demand for petroleum
products; environmental risks; regulatory risks; inability of management to
execute its business plan; competition from other issuers; expiration of
licenses and leases; Indigenous claims; possible failure to realize anticipated
benefits of acquisitions; and reputational risks. 

Additional information regarding some of these risks, expectations or
assumptions and other risk factors may be found in the Company's Annual
Information Form for the year ended December 31, 2025, and other documents
available on the Company's profile at www.sedarplus.ca. Readers are cautioned
not to place undue reliance on these forward looking statements. The
forward-looking statements contained in this news release are made as of the
date hereof and Questerre undertakes no obligations to update publicly or revise
any forward-looking statements, whether as a result of new information, future
events or otherwise, unless so required by applicable securities laws.
ations to update publicly or revise\
any forward-looking statements\, whether as a result of new information\, future\
events or otherwise\, unless so required by applicable securities laws.\