Northern Power Systems Licenses its Proven Wind Turbine Technology in South America

WEG Leveraging Permanent Magnet Direct Drive Technology to Capture Expanding Market

BARRE, VT (August 14, 2013) – Expanding the global reach of its permanent magnet direct drive

(PM/DD) technology, Northern Power Systems (www.northernpower.com) announced today
that it has entered into a strategic partnership with WEG Equipamentos Eltricos S.A., one of
the world's largest manufacturers of electronic equipment. WEG and Northern Power are
cooperating to bring proven, next‐generation wind turbine technology to the South American
wind market. This partnership combines WEG's extensive production capabilities and market
knowledge with Northern Power's PM/DD technology and wind industry experience to deliver
value‐enhanced wind energy products for customers of WEG.

Through this strategic partnership, WEG is offering a utility‐scale technology platform that will
include wind turbines rated between 2.1 and 2.3MW and rotors sized from 93m to 110m to
meet customer requirements in a range of a wind classes. WEG has already secured
commitments for initial orders and will be scaling production operations throughout 2013 and
2014. "We believe that Northern Power's PM/DD technology offers a significant performance
advantage to a vast array of customers in South America," explained Mr. Joo Paulo Gualberto
da Silva, WEG's Head of Wind Energy Generation Business. "The South American wind market,
particularly Brazil, is growing at an incredible rate, and the initial market response to WEG's
turbine offerings has been very positive. Having a partner like Northern Power with proven
technology which is capable of providing solutions for both current and evolving wind market
demands, positions WEG to be a leader in this expanding space now and in the future."
Turbines leveraging PM/DD technology typically demonstrate higher availability and lower
maintenance and repair costs than traditional gear‐based turbines, offering higher energy
production over the turbine's lifetime, and providing enhanced economic returns to owners.
WWW.NORTHERNPOWER.COM

The wind turbines initially will be manufactured at WEG's manufacturing facilities in Jaragua do
Sul, state of Santa Catarina, Brazil.

"WEG has tremendous capabilities to supply all aspects of wind power plants integrated with a
strong understanding of the needs of the South American wind market, and Northern Power
has the experience and technology necessary to provide the right solutions for this market,"
said Troy C. Patton, Chief Executive Officer of Northern Power Systems. "We look forward to
powering WEG's capabilities through our technology offerings."

About Northern Power Systems

Northern Power Systems licenses and develops wind technology on a global basis, and provides
engineering and development services for a wide variety of energy applications, including
microgrids, power conversion systems, and wind and marine turbine solutions. With over 30
years of experience in developing advanced, innovative wind turbines, Northern Power also
offers direct turbine sales of its NPS 60 kW, NPS 100 kW and utility‐scale products. The
Company's proven, next generation permanent magnet direct drive (PM/DD) wind turbine
technology is based on a vastly simplified architecture that utilizes a unique combination of a
permanent magnet generator and direct‐drive design. This revolutionary approach uses fewer
moving parts, delivers higher energy capture, and provides increased reliability due to reduced
maintenance and downtime costs. More information is available at www.northernpower.com.

About WEG

Founded in 1961, WEG operates mainly in the sector of capital goods and is one of the largest
world manufacturers of electric‐electronic equipment, having five main businesses: Motors,
Energy, Transmission and Distribution, Automation and Coatings. With over 27 thousand
employees, it had a net revenue of R$ 6.2 billion in 2012.

In Brazil, the group's headquarters and main industrial plants are located in Jaragu do Sul/SC.
Other plants are spread over Rio Grande do Sul (Gravata), Santa Catarina (Blumenau,
Guaramirim, Itaja and Joaaba), So Paulo (So Paulo, So Bernardo do Campo and Monte
Alto), Amazonas (Manaus), Esprito Santo (Linhares). Overseas, WEG has manufacturing units
in Argentina, Mexico, Portugal, South Africa, China, India, Austria and USA, besides distribution
and trading centers in the USA, Venezuela, Colombia, Chile, Germany, England, Belgium,
France, Spain, Italy, Sweden, Australia, Japan, Singapore, India, Russia and United Arab
Emirates.

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