December 12, 2003 [SolarAccess.com] Beacon Power announced the company’s Smart Power M5 system has been approved for listing by Underwriters Laboratories (UL) in both the U.S. and Canada. Achieving UL approval is the final step in making a product fully available for commercial sale. The Smart Power M5 is designed for use in grid-connected solar power applications, and addresses the needs of customers who have concerns about the stability and reliability of the electrical grid. The Smart Power M5 immediately converts to an independent battery back-up mode when the grid fails, continuing to provide power to critical loads. With this recent UL listing notice, the company will now begin to ship units with the UL label.