Sustainable Energy Ships Additional 65 Units to leading US Distributor and is Poised to Ship Additional 112 Units Before Year End

TORONTO, ONTARIO--(Marketwire - Dec. 13, 2011) - Sustainable Energy Technology Ltd. (TSX VENTURE:STG) ("Sustainable Energy") is pleased to announce that it has shipped another 65 units to Stuart C Irby a leading distributor of electronics products in the United States, bringing the total shipped to Stuart C Irby to date to 445 units. Another 112 units are poised to go in the month of December.

The inverters are to be used with the tenKsolar RAIS® Wave system of which they are a critical component. With a cost target of $0.08 per kilowatt hour in sunny climates, the RAIS® Wave system continues to gain traction in the United States and Europe with double digit forecasted growth in both regions for 2012.

About Sustainable Energy:

Sustainable Energy (www.SustainableEnergy.com) is a Canadian solar inverter company which supplies Canada, the U.S. and Europe. 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.

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; statements concerning the performance of the and statements concerning the performance of the RAIS® Wave system and demand for products. 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.