Sustainable Energy Technologies Ltd.

Sustainable Energy Technologies Ltd.

July 12, 2007 23:09 ET

Sustainable Energy: Corporate Update

CALGARY, ALBERTA--(Marketwire - July 12, 2007) - At the request of Market Regulation Services Sustainable Energy Technologies Ltd. ("Sustainable Energy" or the "Company")(TSX VENTURE:STG) confirms that it is not aware of any specific development which would account for today's market activity.

On May 15 of this year, Sustainable Energy completed a $6.5 million equity financing with a number of leading Canadian institutional investors. The financing, which was significantly oversubscribed, provided Sustainable Energy with the working capital needed to execute on its plan to build out product inventory and develop markets for its solar power inverters in Spain and Greece.

The Company is executing on its plan. It has stepped up production of the SUNERGY inverter and is meeting its manufacturing cost targets. Market receptivity to the Company's patented approach to power conversion has been very positive. The Company is also pursuing opportunities which it believes will enhance its position in the market, but there is no assurance at this juncture that such opportunities will be consummated.

About Sustainable Energy

Based in Calgary Alberta, Sustainable Energy ( develops manufactures and markets advanced power inverters for the renewable energy industry. Power inverters are strategic to the integration of new renewable energy technologies - solar and wind power, fuel cells, and energy storage systems - into the high quality power demands of the modern electrical grid.

The SUNERGY inverter for grid tie solar power systems is the only inverter in its class which offers solar project owners the increased safety of lower operating voltages and the ability to achieve higher more reliable power output by arranging solar modules in parallel. It is also the only inverter in its class which operates at full power throughout the day in temperatures as high as 50 degrees Celsius.

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.

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

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