Xtreme Power and Xcel Energy Partner With SolarTAC on Utility-Scale ?Solar-to-Battery? Distribution

SolarTAC is a private facility in Aurora, Colo. that serves as a solar industry test bed to validate and demonstrate a variety of solar technologies. The role of Xtreme Power’s DPR is to perform a number of energy storage and grid asset functions, including output smoothing, time shifting and forecast error mitigation for solar energy generated at the site.

The project aims to display the real-world results of integrating storage systems with solar installations, to more efficiently incorporate energy output from renewable sources onto the power grid. Results will be made public to reflect the system’s performance over the course of three years.

“Taking part in the SolarTAC project with Xcel Energy affords us an opportunity to work alongside one of the most progressive utilities in the industry,” said Carlos Coe, CEO of Xtreme Power. “We expect the results to highlight the broad range of benefits battery energy storage brings to PV manufacturers, project developers and power producers, ultimately enabling a more effective utilization of clean energy around the world.”

“We hope that this demonstration will prove to be a pivotal point for PV solar energy combined with energy storage, and in turn underscore for utilities and other electricity providers that viable energy storage systems can become a commercial reality,” said Frank Novachek, Xcel Energy director for business planning.

The DPR will be operational at the site by the end of 2010.

Xcel Energy (NYSE: XEL) is a major U.S. electricity and natural gas company, with operations in eight Western and Midwestern states. Xcel Energy provides a comprehensive portfolio of energy-related products and services to 3.4 million electricity customers and 1.9 million natural gas customers through its regulated operating companies. Company headquarters are located in Minneapolis.

Based in Kyle, Texas, Xtreme Power engineers, manufactures and operates integrated power management and energy storage systems for use in renewable energy and micro-grid applications. Xtreme’s Dynamic Power Resource™ combines the large-scale storage capabilities of the company’s proprietary PowerCell™ technology with its micro-second controls and high-efficiency power electronics, creating a comprehensive solution to the intermittency and variability challenges facing utilities and independent power producers looking to implement clean energy to the electrical grid. By providing scalable systems engineered specifically to the needs of its customers, Xtreme Power offers a safe and cost-effective approach to dramatically increase the feasibility of renewable energy.

The Solar Technology Acceleration Center (SolarTAC) is an integrated, world-class test facility where the solar industry can research, test, validate, and demonstrate solar technologies. SolarTAC’s mission is to increase the efficiency of solar energy products and rapidly deploy them to the commercial market. Located near Denver International Airport in Aurora, Colorado, the 74-acre SolarTAC site offers flat, graded topography and excellent insolation conditions with over 300 days of sunshine a year in one of the most progressive renewable energy states in the country. The SolarTAC site will include facilities for testing both photovoltaic and concentrated solar power (CSP) technologies, including access to the grid.

www.xcelenergy.com