Company Teams with SunEdison and SkyPower to Deliver Nine Megawatts of Solar Power for First Light Solar Farm

Satcon Technology Corporation (NASDAQ CM: SATC), a leading provider of utility scale power solutions for the renewable energy market, announced today that their PowerGate Plus 500 kW solar PV inverters were selected for and are now fully operational at First Light, Canada’s largest solar farm developed through a joint venture between SunEdison and SkyPower. The 9.1 megawatt First Light installation is located on approximately 90 acres of land in Stone Mills, Ontario, and is projected to generate more than 10 million kilowatt hours (kWhs), enough electricity to power almost 1,000 homes in its first year of operation.

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“The First Light Solar Park is the largest system deployed under Ontario’s RESOP and is a significant step in the growth of utility scale solar power generation in North America,” said Carlos Domenech, SunEdison Chief Operating Officer. “Producing reliable large scale solar power in the challenging Ontario climate presented design challenges to our project team. Satcon brought the expertise and the proven inverter technologies to help us achieve the performance and quality required to deliver stable and reliable solar power.”

Under the terms of the agreement, Satcon supplied 18 of its PowerGate Plus 500 kW inverters, the industry’s most proven large scale solar PV power conversion technology solution, with over 170 megawatts delivered worldwide since 2005.

The selection of the PowerGate 500 kW for First Light is yet another example that, as today’s solar PV farms grow in size and complexity, Satcon’s suite of utility solutions continue to set the standard for projects that require highly reliable and efficient power production. Satcon’s other utility grade solutions include the fully integrated 1 megawatt medium voltage platform, Prism™, and the recent addition to their product line, Solstice™, the industry’s first complete power harvesting and management solution for utility class solar power plants. Prism and Solstice, along with the PowerGate 1 megawatt and 500 kW solutions, give Satcon the most complete set of utility ready products in the industry.

“First Light further demonstrates the growing adoption of large scale solar installations in North America and the increased demand for advanced feature, utility grade solutions,” said Steve Rhoades, President and Chief Executive Officer of Satcon. “We have worked closely with both SunEdison and SkyPower to develop a total system solution that delivers the highest levels of performance and reliability designed for the challenging Canadian environment. With First Light, we continue to set the standard for large scale solar power production in North America.”

The grand opening ceremony for First Light was held on October 14, 2009 in Stone Mills, Ontario.

About Satcon

Satcon Technology Corporation is the leading provider of utility scale distributed power solutions for the renewable energy market, enabling the industry’s most advanced reliable and proven clean energy alternatives. For over 24 years, Satcon has designed and delivered the next generation of efficient energy systems for solar photovoltaic, stationary fuel cells, and energy storage systems. To learn more about Satcon, please visit www.Satcon.com.

About SunEdison

SunEdison is North America’s largest solar energy services provider. The company finances, installs and operates distributed power plants using proven photovoltaic technologies, delivering fully managed solar energy services to its commercial, government and utility hosts. In 2008, SunEdison delivered more kilowatt hours (kWh) of energy than any other solar services provider in North America. For more information about SunEdison, please visit www.sunedison.com

About SkyPower

SkyPower is the leading independent renewable energy developer in Canada, and possesses proven expertise in developing, building and managing both large-scale and micro-generation wind and solar power projects. SkyPower has developed a national footprint, with a substantial number of projects at various stages of development across Canada, select U.S. States, India and Panama representing thousands of megawatts (MW) of potential nameplate capacity. SkyPower continues to help many different jurisdictions meet their increasing demand for cleaner, non-emitting renewable energy solutions. For more information, visit www.skypower.com.