Thermal Energy Completes Patent Filing Related to THERMALONOx(TM)



    New process removes over 98% of nitrogen oxides in laboratory tests;
    Targets $50 billion-plus NOx control market

    OTTAWA, April 3 /CNW Telbec/ - April 3, 2007 - Thermal Energy
International Inc. (TSX-V: TMG) (www.thermalenergy.com) is pleased to announce
it has completed filing the final patent applications on new technology at the
core of its THERMALONOx(TM) nitrogen oxides (NOx) reduction solution.
    A patent application was filed with the United States Patent and
Trademark Office (USPTO) and another application was filed with the Canadian
Receiving Office for the Patent Cooperation Treaty (PCT) to simultaneously
start patenting the new technology in 137 countries across Europe and South
America, and China - the world's largest coal-fired power market. This is
subsequent to the filing of the provisional patent application in April 2006.
    "Our repeatable laboratory tests prove our new process for               
THERMALONOx(TM) generates large quantities of ozone on a sustained basis and
results in the right chemical reaction required to remove more than 98% of
nitrogen oxides (NOx) from simulated flue gas streams,"  said Thermal Energy
President and CEO Tim Angus.
    Thermal Energy's current laboratory-scale success contrasts sharply with
the negligible results in 2001, when American Electric Power (AEP) trialed a
different, unproven process at its Conesville, Ohio power plant. "The lab
results Thermal Energy is achieving today demonstrate much of what we had
hoped to achieve in the AEP tests," said Thermal Energy's Chief Technology
Officer Robert Triebe.
    "This new process will allow us to move forward to demonstrate the
technology, and then bring THERMALONOx(TM) to market as a more cost-effective
solution to reducing NOx emissions than exists today," said Mr. Triebe.
"Demonstration scale tests are currently being planned to prove out the cost
effectiveness of this improved THERMALONOx(TM) process," said Mr. Triebe.
    Analysts estimate that by 2010, coal-fired power plants around the world
will have invested US$24 billion in NOx control technologies, and from 2010 to
2020 they will invest an additional US$51 billion in NOx controls. Those
investments cover about half of the total number of coal-fired power plants
anticipated around the world as coal continues to be the world's fastest
growing energy source. Billions of dollars in additional investments are
forecast to control NOx from flue gas sources on other thermal power plants,
such as gas turbines and the recent growth of biomass power stations. It also
includes large industrial power plants and boilers, (i.e. oil, gas, biomass
and sludge).
    The patent applications relate to ozone generation processes and ozone
generators, in particular, phosphorus-based ozone generation. The primary
invention covered under the patent applications pertains to a method to
generate high quantities of ozone which can be injected into a multitude of
applications where great quantities are needed at a low production cost. The
process can be operated very economically by capturing and selling the
phosphorus derivatives generated through the reaction. Other potential uses
for the phosphorus-based ozone generation in THERMALONOx(TM) include
large-scale water purification, HVAC air purification and any other industrial
process where ozone is needed to oxidize organic or inorganic matter.

    About Thermal Energy

    Thermal Energy International Inc. is an innovative technology company
providing custom energy and emission reduction, and bioenergy solutions.
Headquartered in Ottawa, Canada, TEI is a designer, design build developer,
fabricator, and supplier of proprietary and patented energy conservation,
renewable energy and environmental technology solutions. Thermal Energy is a
fully accredited professional engineering firm, and offers advanced process
and applications engineering services. The Company is a proud member of the
Chicago Climate Exchange (CCX). FLU-ACE(R), DRY-REX(TM), THERMALONOx(TM) and
THERMALOZOMAX(TM) are trademarks of Thermal Energy International. GEM(R) is a
trademark used under exclusive license from Gardner Energy Management Ltd.
    For more information about Thermal Energy International Inc. (TSX-V:
TMG), visit our website at www.thermalenergy.com.

    THE TSX VENTURE EXCHANGE HAS NOT REVIEWED AND DOES NOT ACCEPT
    RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.




For further information:

For further information: Stuart McCarthy, Thermal Energy International
Inc., Investor Relations and Communications, (613) 723-6776 x 220,
stuart.mccarthy@thermalenergy.com

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