Sustainable Energy Technologies Ltd.
TSX VENTURE : STG

Sustainable Energy Technologies Ltd.

March 04, 2009 18:53 ET

Sustainable Energy Technologies Clarifies News Release Dated February 27, 2009

CALGARY, ALBERTA--(Marketwire - March 4, 2009) - In its press release issued February 27th 2009, Sustainable Energy Technologies Ltd ("Sustainable" or the "Company") (TSX VENTURE:STG) Chief Executive Officer made the following observation. "These are difficult times, even for the high growth solar power industry, and it is often hard difficult to look past short term quarterly results. But, we have created a company which I believe has the potential to deliver annual earnings in excess of $100 million by 2012."

This language does not comply with TSX Venture Exchange guidance disclosure guidelines concerning forward oriented financial information and is hereby retracted.

About Sustainable Energy

Based in Calgary, Alberta, Canada, Sustainable Energy Technologies Ltd (www.sustainableenergy.com) designs, manufactures and distributes power inverters for grid-connected solar PV systems. Advanced power inverters are a critical enabler of all modern solar PV power systems converting the direct current ("DC") power output of the solar PV modules into the high quality alternating current ("AC") power required by the power grid. Advanced power inverters also optimize the performance of the solar PV modules and maintain the integrity and safety of the interconnection with the power grid.

Sustainable has developed and patented an extra low voltage inverter technology which enables a massively "parallel" solar PV system architecture, in high power ratings, without compromising electrical conversion efficiencies.

With conventional "high voltage" inverters, PV modules must be wired electrically in "series" to meet the inverters' high voltage input specifications. In a "series" configuration each of the PV modules in the string will operate at the level of the poorest performing module. This will typically be caused by (i) partial shading of the PV modules from normal building congestion (e.g. from chimneys, parapets, railings power lines, telecommunications towers, etc), debris and dirt (ii) variances in power output due to variances of the orientation of the PV modules (e.g. building angles curvatures etc.) and (iii) variances in module manufacturing tolerances.

Avoiding the disproportionate impact of these factors on system performance now requires site specific custom design of the system, increasing system cost and limiting the number of locations where solar power can be deployed economically.

A low voltage inverter enables a "parallel" architecture where each PV module operates at its optimum power point, independently of other modules in the system, limiting the impact of partial shading on system performance, and completely eliminating the potential for module mismatch from variances in orientation of the modules or manufacturing tolerances.

Forward Looking Information

The reader is advised that some of the information herein may constitute forward-looking statements within the meaning assigned by National Instruments 51-102 and other relevant securities legislation. In particular, we include: statements concerning the impact of our technology on solar PV system performance. Forward-looking information is not a guarantee of future performance and involves a number of risks and uncertainties. Many factors could cause the Company's actual results, performance or achievements, or future events or developments, to differ materially from those expressed or implied by the forward-looking information. Readers are cautioned not to place undue reliance on forward-looking information, which speaks only as of the date hereof. The Company does not undertake any obligation to release publicly any revisions to forward-looking information contained herein to reflect events or circumstances that occur after the date hereof or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws.

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

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