Sustainable Energy Technologies Ltd.

Sustainable Energy Technologies Ltd.

May 15, 2006 11:44 ET

Sustainable Energy Announces Production Start Up in Europe

CALGARY, ALBERTA--(CCNMatthews - May 15, 2006) - Sustainable Energy Technologies Ltd (TSX VENTURE:STG) ("Sustainable Energy") announced today that its partner, Gabriel Benmayor SA, has begun manufacturing SUNERGY inverters at their production facility near Barcelona, Spain.

The first product to be made in Spain is a 5kW grid-interactive inverter for the Spanish grid-connected solar power market.

The SUNERGY "5" is well suited to the Spanish environment, as it operates at full power over extended periods of time and in ambient temperatures in excess of 500 C. Its patented approach to power conversion also enables the inverter to maintain very high electrical conversion efficiencies at full power, notwithstanding variable voltage inputs from the solar modules.

With the introduction of premium pricing for solar power effective April 1, 2005, Spain has become the fastest growing solar power markets in the world.

The production facility has the capacity to assemble and test up to 100 units per month. Production capacity can be expanded with minimal incremental capital cost.

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.

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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