SunEdison ROC Celebrates 1GW of Solar Energy Under Management

        SunEdison ROC Celebrates 1GW of Solar Energy Under Management

SunEdison Renewable Operation Centers Provide Operations, Monitoring,
Reporting and Asset Management Services for over 1GW of Solar Assets Worldwide

PR Newswire

BELMONT, Calif., March 28, 2013

BELMONT, Calif., March 28, 2013 /PRNewswire/ --SunEdison, a leading worldwide
solar energy services provider and a subsidiary of MEMC Electronic Materials,
Inc. (NYSE:WFR), today announced a global milestone in the company's solar
operations as it now has more than 1 gigawatt (GW) of global solar PV
(photovoltaic) assets under the management of its Renewable Operations Centers
(ROCs). The facilities managed by the ROCs include a mix of plants that are
owned by SunEdison and its investment partners, as well as third parties who
have come to SunEdison to utilize its advanced services platform.

(Photo: http://photos.prnewswire.com/prnh/20130328/NY84932 )

SunEdison operates three ROCs providing 24/7 services year round, configured
with redundancy to prevent disruption of service. The flagship ROC is at the
company's headquarters in Belmont, California, with additional facilities
located in Chennai, India and Madrid, Spain.

"Achieving this milestone is a significant moment in our company history,"
said Mark McLanahan, vice president and general manager for global services
for SunEdison. "When it comes to asset management, SunEdison is in a unique
position to serve our customers. We are not just a vendor, we are also an
owner/operator of PV solar power plants so we have a first-hand understanding
of our customers' requirements, which allows us to bring innovative solutions
to market."

Investment Grade Monitoring System

The SunEdison ROCs employ sophisticated monitoring and reporting tools to
detect any anomalies in system performance. Technicians can analyse alerts to
diagnose the cause and determine the best course of action. In many cases
issues can be resolved remotely, reducing the need to dispatch technicians.
SunEdison monitors the full range of components and systems within a solar
installation; including weather stations, pyranometers, ambient temperature
sensors, panel temperature sensors, inverters, string combiners, recombiners,
soiling analysis stations and AC subsystems. The ROCs' sophisticated analysis
capabilities allow SunEdison to transform raw data into rich reports that
provide a system-level view of plant performance which helps predict the
potential of a power plant, uncover operational issues, and optimize system
performance.

For SunEdison customers, an online monitoring portal provides live access to
an extensive array of system data, including:

  oDetailed tracking of energy production
  oMeasurement of environmental and economic savings
  oFleet, fund, and site views
  oInvoice creation and printing

Proactive Asset Management

Based on plant information collected and analyzed by the ROCs, SunEdison
provides comprehensive services to ensure reliable, high yield operations for
the life of the assets. This starts with field service dispatch through a
sophisticated work order management tool to administer preventative and
corrective maintenance activities. Services also include critical functions
such as supplier relationship management, spare parts inventory management,
warranty claims administration, and wide-ranging financial services on behalf
of project companies.

Additional Services

To reduce the time-consuming burden of billing and incentive reporting the ROC
offers energy production reports to support Performance Based Incentive (PBI)
and Renewable Energy Credit (REC) programs. Additionally the ROC can host
tenant energy billing to support Power Purchase Agreements (PPAs).

To learn more about the SunEdison ROC please visit
http://www.sunedison.com/services.

About SunEdison

SunEdison is a global leader in delivering solar power. The company develops,
finances, installs and operates distributed power plants using proven
photovoltaic technologies, delivering fully managed, predictably priced solar
energy services for its commercial, government and utility customers. As of
December 31, 2012, SunEdison had interconnected over 989 Megawatts of solar
electricity throughout the world. For more information about SunEdison please
visit www.sunedison.com.

About MEMC

MEMC is a global leader in semiconductor and solar technology. MEMC has been
a pioneer in the design and development of silicon wafer technologies for over
50 years. With R&D and manufacturing facilities in the U.S., Europe, and
Asia, MEMC enables the next generation of high performance semiconductor
devices and solar cells. Through its SunEdison subsidiary, MEMC is also a
developer of solar power projects and a worldwide leader in solar energy
services. MEMC's common stock is listed on the New York Stock Exchange under
the symbol "WFR." For more information about MEMC, please visit www.memc.com.

SOURCE SunEdison LLC

Website: http://www.sunedison.com
Contact: Dawn Brister, SunEdison, 407-414-0526, dbrister@memc.com, or Mark
Sutherland, Elasticity for SunEdison, 314-913-0674, mark@goelastic.com
 
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