Capstone Turbine Receives Order for Hybrid UPS for Green Data Center Owned by Nation's Largest Natural Gas Distribution Utility

CHATSWORTH, Calif., May 30, 2013 (GLOBE NEWSWIRE) -- Capstone Turbine Corporation (www.capstoneturbine.com) (Nasdaq:CPST), the world's leading clean technology manufacturer of microturbine energy systems, received an order for three patented C65 Hybrid Uninterruptible Power Source (Hybrid UPS) units for installation at a data center owned and operated by Southern California Gas Company (SoCalGas), the nation's largest natural-gas distribution utility.

Capstone's Hybrid UPS is the world's first UPS system that integrates low-emission microturbines directly with a dual-conversion UPS to provide low-emission and highly reliable power for mission-critical loads.

Capstone's Southern California distributor Regatta Solutions, Inc. secured the order that features several Hybrid UPS microturbines deployed for critical load application. The Hybrid UPS is an alternative to traditional UPS solutions that can easily integrate with an absorption chiller to create a combined cooling, heating, and power (CCHP) system that provides IT-grade power (eight 9's reliability), facility heat, and chilled water for space cooling.

At the SoCalGas data center in Monterey Park, California, the Capstone Hybrid UPS microturbine units will integrate with an advanced double-effect Thermax exhaust-fired absorption chiller. Clean-and-green power generated onsite will support critical loads. The microturbines' clean waste-heat energy will drive the absorption chiller to meet the data center's cooling needs in the summer and support heating needs in the winter.

SoCalGas provides safe and reliable energy to 20.9 million consumers in more than 500 Southern California communities. The company's service territory encompasses approximately 20,000 square miles.

"When used in a UPS application, the Capstone Hybrid UPS units emit ultra-low greenhouse-gas emissions and do not produce hazardous materials common with traditional battery-based UPS systems, which makes them the optimal clean-and-green power system for SoCalGas," said Darren Jamison, Capstone's President and Chief Executive Officer.

"Since its market introduction in 2008, Capstone's Hybrid UPS has proven to be a key component of green, energy-efficient data centers," said Jim Crouse, Capstone's Executive Vice President, Sales and Marketing. "In addition to its reliability and economic benefits, Capstone's Hybrid UPS can be used in a CCHP application, making it extremely efficient."

About Capstone Turbine Corporation

Capstone Turbine Corporation (www.capstoneturbine.com) (Nasdaq:CPST) is the world's leading producer of low-emission microturbine systems, and was the first to market commercially viable microturbine energy products. Capstone Turbine has shipped over 6,500 Capstone Microturbine systems to customers worldwide. These award-winning systems have logged millions of documented runtime operating hours. Capstone Turbine is a member of the U.S. Environmental Protection Agency's Combined Heat and Power Partnership, which is committed to improving the efficiency of the nation's energy infrastructure and reducing emissions of pollutants and greenhouse gases. A UL-Certified ISO 9001:2008 and ISO 14001:2004 certified company, Capstone is headquartered in the Los Angeles area with sales and/or service centers in the New York Metro Area, Mexico City, Nottingham, Shanghai and Singapore.

The Capstone Turbine Corporation logo is available at https://www.globenewswire.com/newsroom/prs/?pkgid=6212

This press release contains "forward-looking statements," as that term is used in the federal securities laws, about the use of our products in UPS applications. Forward-looking statements may be identified by words such as "expects," "objective," "intend," "targeted," "plan" and similar phrases. These forward-looking statements are subject to numerous assumptions, risks and uncertainties described in Capstone's filings with the Securities and Exchange Commission that may cause Capstone's actual results to be materially different from any future results expressed or implied in such statements. Capstone cautions readers not to place undue reliance on these forward-looking statements, which speak only as of the date of this release. Capstone undertakes no obligation, and specifically disclaims any obligation, to release any revisions to any forward-looking statements to reflect events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.

"Capstone" and "Capstone MicroTurbine" are registered trademarks of Capstone Turbine Corporation. All other trademarks mentioned are the property of their respective owners.

CONTACT: Capstone Turbine Corporation
         Investor and investment media inquiries:
         818-407-3628
         ir@capstoneturbine.com

Released May 30, 2013