SUSTAINABLE ENERGY TO OFFER INVERTER FOR SMALL WIND TURBINES

Agreement with Zephyr Corporation for Residential Scale Wind Turbine



Calgary, Alberta, Canada - February 20, 2007 - Sustainable Energy Technologies Ltd ("Sustainable Energy" or the "Company"- TSXV: "STG") will offer a new inverter to deliver power from small wind turbines to electricity grids at the same high efficiencies available to solar PV applications. Using proprietary technology, the new inverter will also have the capability to provide backup power during grid outages, and to connect hybrid systems incorporating both solar and wind energy.

The first product application will be for a residential scale wind turbine developed by Japan's Zephyr Corporation www.zephyreco.co.jp. The AIRDOLPHIN Mark-Zero is an ultra-quiet light-weight wind turbine which employs a number of innovative features unique to the industry that deliver lower operating costs and higher efficiencies than other small turbines and large megawatt scale turbines.
Sustainable Energy has agreed with Zephyr to adapt the Company's SUNERGY inverter platform for the AIRDOLPHIN turbine. The inverter incorporates recently developed proprietary software which enables it to operate in a grid interactive mode with very high efficiencies, and to switch to battery based mode for back up power during grid outages. Under its agreement with Zephyr, the Company has also acquired the right to bundle the AIRDOLPHIN with the new inverter product for distribution in Canada.

About Sustainable Energy
Based in Calgary Alberta, Sustainable Energy (www.sustainableenergy.com) 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.
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.

For further information please contact:


Michael Carten
President and CEO
Phone: 403.508.7177 #111

Michael.Carten@SustainableEnergy.com

Featured Product

WS510 Secondary Standard

WS510 Secondary Standard

In the monitoring of large photovoltaic (Utility Scale), in assessing potential sites (Solar-assessment), or in up and coming electricity cost saving initiatives projects (Commercial & Industrial), the WS510 now provides the market a secondary standard pyranometer, ultrasonic wind speed, ultrasonic wind direction, temperature, pressure and humidity all in a single unit.. This sensor meets the high demands of the world meteorological organization (WMO) through the active valving at air temperature measurement and the inertia- and maintenance-free measurement of wind speed and wind direction on the ultrasonic principle. Equipped with a Kipp & Zonen pyranometer of the secondary standards, the WS510-UMB Compact weather sensor from Lufft unites the precision of a variety of meteorological individual sensors in a single all-in-one device, for the first time.