Commercial & Residential Solar Solutions

NREL Testing Confirms 16.3% Efficiency for XsunX CIGSolar™

Aliso Viejo, CA – July 11, 2011 – XsunX, Inc. (XSNX), the developer of CIGSolar™, a hybrid, thin-film photovoltaic (TFPV) solar cell manufacturing process, today announced that the National Renewable Energy Laboratory (NREL) certified the peak efficiency conversion of 16.36% achieved by XsunX, Inc. for Copper-Indium-Gallium-(di)selenide (CIGS) photovoltaic devices.

Overall efficiency of tested samples ranged from 15.3% to 16.36% producing an average efficiency of 15.91%. The sample provided to NREL was part of a 125mm substrate which after deposition was sub-divided into quadrants to produce NREL device test structures and analytical equipment test structures. The purpose was to provide a statistically significant body of data in support of XsunX’s continuous process improvement efforts.

Robert Wendt, CTO at XsunX, commented, “NREL’s official measurement of 16.36% supports our manufacturing approach and the viability of single cell processing. We believe the efficiency levels that we achieved will provide an economically viable process that we can offer the market.” Mr. Wendt continued, “We are pleased with the results, but they are what we had planned for and expected. We believe that our approach lends itself to direct translation to production.”

The Company’s technology utilizes co-evaporation for rapid deposition of final-sized cells to better control the complex management of the CIGS layer deposition process. The Company’s method, unlike other CIGS manufacturing technology, begins and ends using individual substrates sized to match silicon cells. In addition to providing for a smaller and more precise deposition environment, this also helps to avoid performance losses experienced when cells are either cut from rolls of CIGS material or mismatched electrically in monolithic assemblies.

“We focused our efforts on the belief that high performance CIGS solar cells could offer an alternative to the use of more costly silicon technology – a $13 billion dollar market opportunity in 2010,” said Tom Djokovich, CEO, XsunX, Inc. “The official measurements conducted by NREL help to show that small area co-evaporation offers the necessary conversion efficiencies to compete with silicon. We are very excited about these results, the work we have accomplished, and the opportunities for our CIGSolar™ technology.”

About XsunX

XsunX, Inc. is developing and has begun to market a new manufacturing process to produce low cost, high efficiency thin-film Copper Indium Gallium (di) Selenide (CIGS) thin film solar cells. The patent pending system and processing technology, which XsunX calls CIGSolar™, focuses on the mass production of individual thin-film CIGS solar cells that match silicon solar cell dimensions and can be offered as a non-toxic, high-efficiency and lowest-cost alternative to the use of silicon solar cells. The company is offering licenses for the use of the CIGSolar™ process technology, and plans to generate revenue through licensing fees and manufacturing royalties for the use of the CIGSolar™ technology.

For more information please call XsunX at 888-797-4527, or visit the company’s website at

Safe Harbor Statement

Matters discussed in this press release contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known and unknown risks, uncertainties and other unknown factors that could cause the Company’s actual operating results to be materially different from any historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements that explicitly describe these risks and uncertainties, readers are urged to consider statements that contain terms such as “may,” “will,” “should,” “believes,” “expect,” “intend,” “anticipate,” “plan,” “estimate” to be uncertain and forward-looking. The forward-looking statements contained herein are also subject to risks and uncertainties that are described in our most recent annual report on Form 10-K under the heading “Risk Factors” and our subsequent filings with the Securities and Exchange Commission. We do not undertake any obligation to update publicly any forward-looking statements whether as a result of the receipt of new information, future events, or otherwise

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