Sustainable Energy Announces Agreement On SUNERGY "CPV" Inverter Solution

Sustainable Energy Technologies Ltd. (TSX VENTURE:STG), ("the Company" or "STG")
announced today that it has entered into an agreement with FOTOVOLTAICA 10 CM SA
("Grupo Diez") to collaborate on an inverter system solution for a 33 kW solar
concentrator tracker developed for Grupo Diez. Grupo Diez is a large solar
project developer based in Toledo, Spain.


Concentrated PV ("CPV") is a third generation solar technology which has the
potential to challenge thin film for the lowest installed cost per watt in large
utility scale applications. Using optical lenses or mirrors to increase the
solar intensity CPV systems significantly reduce the amount of expensive silicon
needed to produce solar electricity.


"There is increasing recognition among CPV project developers that the power
output characteristics of CPV systems create unique demands on solar inverters,"
commented Michael Carten President & CEO. "Our platform enables us to meet these
demands. We have a similar agreement to optimize a 5kW system application with a
very large Spanish developer, and several other market leaders have expressed
interest in trying our system solution in the past few weeks."


"This is a significant opportunity for Sustainable. We believe that CPV
technologies have reached a tipping point and we estimate that we could easily
see 80-90 megawatts of CPV systems installed in 2008, and close to 400 megawatts
in 2009. According to a recent article in Sun & Wind Energy (Feb 2007), industry
estimates are considerably higher." added Carten.


"We are very excited about the Sustainable inverter platform," said Cesar
Rodriguez, Technical Director for Group Diez. "It is a very interesting
approach, which we believe will add real value to our systems."


The SUNERGY CPV inverter incorporates patented and proprietary technology which
enables it to address the needs of CPV modules especially in less than perfect
operating conditions:


- Continuous grid connectivity: The SUNERGY(TM) CPV inverters can track very
high speed changes in power outputs from the CPV modules while maintaining
continuous grid connectivity, even at zero power. It ensures virtually
uninterruptible power from CPV modules in changing lighting conditions.


- Enhanced power output & reliability: The SUNERGY(TM) CPV inverter enables a
parallel array of the CPV modules which allows for wider module to module output
variability without compromising total system performance. This insures against
mismatch losses resulting from variances in manufacturing and installation
tolerances.


- No thermal rollback: The SUNERGY(TM) CPV inverter operates at full power all
day in temperatures above 500C. The CPV system does not suffer from thermal
rollback of the inverter as outside temperatures rise. CPV systems are optimized
in hot dry climates.


About Sustainable Energy Technologies Ltd.: Based in Calgary, Alberta, Canada,
Sustainable Energy designs, manufactures and distributes power inverters for
distributed alternative energy applications. Power inverters convert and control
the raw power output of renewable power generators (such as solar and small wind
power systems) and energy storage systems (such as batteries and stationary fuel
cells) to grid-quality power. The Company is focused on delivering product
solutions to the solar power market in Europe.


For more information on the Company and its SUNERGY(TM) inverter please visit:
www.sustainableenergy.com.


Certain statements contained in this press release may be considered as
forward-looking. Such forward-looking statements are subject to risks and
uncertainties that could cause actual results to differ materially from
estimated or implied results.

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