For more information, contact:

Jessi Lord Marketing Communications Manager AE Solar Energy +1.541.323.4185 jessica.lord@aei.com

Jason Morris Schwartz MSL +1.415. 512.0770 aesolarenergy@schwartzmsl.com

Bergen Group of Companies to Sell and Support Advanced Energy’s Line of Large Commercial and Utility-Scale Inverters; First Megawatt of Projects Already Commissioned

FORT COLLINS, Colo., May 7, 2012—Advanced Energy Industries, Inc. (Nasdaq:AEIS), today announced a sales and service partnership with Bergen Group that will help both companies better service the high-growth Indian photovoltaic (PV) market. The first project under this partnership is a 1 megawatt (MW) ground-mount array, which has already been commissioned in Kalanaur, in the state of Haryana, India.

“We are excited to be working with AE Solar Energy and look forward to bringing the company’s high quality and reliable utility-scale inverters as well as service and support offerings to the rapidly expanding Indian solar PV market,” said Rajinder Kumar, managing director and chairman, Bergen Group. “We see great opportunity in the Indian PV market and are pleased to be partnered with Advanced Energy, a leader in utility-scale inverter manufacturing. We are fully prepared to take up the responsibility to provide a strong after sales support for installation, commissioning, warranty, and annual maintenance contracts.”

The Indian PV market has significant potential due to its growing demand for energy, driven by its rapidly expanding economy, and supported by the Jawaharlal Nehru National Solar Mission and its goal of 20GW of installed solar power by 2020. This growing demand for renewable, clean sources of energy strongly aligns with AE Solar Energy’s expertise in lowering the levelized cost of energy (LCOE) for project owners and off-takers. Together with Bergen, AE Solar Energy will deliver inverter and energy service solutions that provide utilities with confidence that their PV projects will deliver on long-term production goals.

“We’re excited to expand our business into India and partner with Bergen Group. AE Solar Energy underwent an in-depth selection process to determine the right partner for our move into this important market for solar energy, and we strongly believe we have chosen wisely,” said Gordon Tredger, president, AE Solar Energy. “Bergen Group combines domain expertise with an India-wide service network that will allow us to provide the high-standard of AE service and support our customers expect.”

The 1 MW ground-mount array in Kalanaur, utilizes two AE 500kW utility-scale inverters. The AE inverter architecture provides utility-scale grid-tied PV systems with high efficiency, lower balance of system (BoS) costs and grid-integration controls.

The Bergen Group, supported by AE Solar Energy, exhibited at the India Solar Summit, April 19-21, 2012 at the Mahatma Mandir Convention Centre in Gandhinagar, Gujarat. During the summit, a representative of Advanced Energy took part in a panel to discuss existing solar technologies, opportunities and challenges that help to position PV as a front runner technology in the Indian region.

AE’s solar energy business delivers highly reliable inverters, complimentary BoS products, and robust Operations and Maintenance (O&M) services that allow its customers to secure more solar projects and increase their earnings. AE Solar Energy enables utility-scale, commercial, and residential solar project stakeholders to offer system owners a lower LCOE and confidence that their PV system will deliver on long-term production goals. With more than 30 years of leadership in delivering innovative energy solutions, combined with a legendary reputation for customer service, AE is a trusted partner to solar project developers, financiers and beneficiaries around the globe.

About Advanced Energy

Advanced Energy (Nasdaq: AEIS) is a global leader in reliable power conversion solutions used in thin-film plasma manufacturing and solar energy generation. Founded in 1981, Advanced Energy is headquartered in Fort Collins, Colorado, with dedicated support and service locations around the world. For more information, go to www.advanced-energy.com/solarenergy.

About Bergen Group

In 1979, while watching the simultaneous sunset and sunrise in the town of Bergen in Norway, the idea of providing bundled services required in electronic manufacturing in India germinated in the mind of a young visionary. This vision was given professional reality when Bergen Associates Pvt. Ltd. was formed in 1983 by a group of like-minded technocrats. Initially set up as a conduit for the supply of European machinery to the Indian electronic industry, the company introduced into the Indian market international quality and excellence in the field of manufacturing, assembly and testing of Printed Circuit Boards.

A growing need in the industry led to a rapid expansion of the initial vision and the transformation of the flagship company into the progressive and competent Bergen Group of Companies. Over 25 years experience in hardware electronics gave Bergen Group the competitive edge to establish the company within the Indian solar industry. By providing support in supplying, installing, commissioning and proving technology in cells and modules of 500MW annual capacity for each, Bergen is a leading name in the solar service industry and is acknowledged internationally by their partners in Europe and the US and by their customers in India.