Sustainable Energy Technologies Ltd.: Johnson Controls International and Solsmart Install SUNERGY Inverters on Public Housing Projects

TORONTO, ONTARIO--(Marketwire - Sept. 30, 2011) - Sustainable Energy Technologies Ltd. (TSX VENTURE:STG) ("Sustainable Energy") is pleased to announce the inclusion of their made in Ontario SUNERGY inverters for use in 4 commercial roof top installations for a large public housing corporation located through-out Toronto. Designed by Solsmart Energy Solutions, the installations are currently being managed by Johnson Controls International.

SUNERGY's low-voltage, high yield, parallel, roof-top performance were critical drivers in Solsmart choosing the SUNERGY inverter, according to Khalid Grant a Solar Designer and Engineer for Solsmart "Your Sunergy inverter is turning out to be exactly the solution we need. Other string inverters like SMA require a minimum string size of 12 or 13 which makes it impossible to do a system with 15 or 18 panels. The Sunergy inverter is allowing us to use smaller string sizes and giving us more design flexibility."

"Design flexibility is crucial for coverage on all non ideal rooftops, and where a balanced three phase connection it is a must. Our system is the only one in the market to provide this with the safety of low voltage, delivering on our value proposition for roof tops at the commercial level" added Sustainable CEO Michael Carten.

140kW of these projects are located throughout a portfolio of more than 2,000 high, medium and low-rise and apartment buildings.

About Johnson Controls:

Johnson Controls (www.johnsoncontrols.com) established in 1886 is a leader in energy efficiency solutions, bringing us the first electric room thermostat in 1883. Johnson Controls is a global diversified technology and industrial leader serving customers in more than 150 countries, with over 142,000 employees in over 1,300 locations worldwide and over $34 billion of sales in 2010. Johnson Controls create quality products, services and solutions to optimize energy and operational efficiencies of buildings; lead-acid automotive batteries and advanced batteries for hybrid and electric.

About Solsmart Energy Solutions Inc:

Solsmart Energy Solutions Inc. (www.SolSmart.com) is a Toronto-based company founded by CEO and engineer Blair Beesley and has become one of Ontario's leading solar energy companies. A full service renewable energy company, they provide customized design, sales and installation of both solar thermal and solar electric systems. Since 2004, the Solsmart team has successfully installed solar systems for residential, industrial, agricultural and commercial clients all over Ontario. With over 1 MW of installations, they have proven experience and expertise installing systems as part of new construction, retrofits and renovations on all roof types.

About Sustainable Energy:

Sustainable Energy (www.SustainableEnergy.com) is Canada's solar inverter company. The Company's patented inverter technologies are a breakthrough in power inverter design and capabilities for all forms of distributed generation and smart grid applications. The PARALEX inverter is the industry's only grid-interactive solar inverter which enables a "parallel" solar PV system architecture in higher power ratings at a cost and serviceability factor that is comparable to conventional inverters in the market. The benefits of parallel solar are: (i) 5% - 25% higher total system power output; (ii) a better fill factor enabling better coverage of available space; (iii) a simplified system design and installation; and (iv) the safety of extra low operating voltages which ensures the safety of building maintenance personnel, first responders, and tradesmen who may accidentally come into contact with system wiring. Sustainable Energy's technologies are the subject of multiple patents issued by and pending with the Canadian and US Patent Offices.

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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; and statements concerning demand for products; statements concerning Johnston Controls International and SolSmart Energy Solutions Inc, 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.

Readers are also directed to the Risk Factors section of the Company's current Annual Information Form which may be found on its website or at www.sedar.com 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.