Question: What type of Energy do SunEdison Inc, a company that built an array of photovoltaic panels on a Davidson County farm in North Carolina, specialise in?

Sunlight Solar Energy is a national solar power company, headquartered in Bend, Oregon, that specializing in the design, finance, installation, and management of commercial and residential solar electric, solar hot water, solar pool, and radiant floor systems.  Sunlight Solar was founded in 1988 by Paul Israel, a graduate of Temple University and co-founder of the Central Oregon Green and Solar Tour.  The company opened its first location in Redmond, Oregon in 1997 and began installing solar for RV's, solar hot water, and off-grid solar electric systems.  In 2003 the company moved operations to Bend, Oregon where the office's 3.6 Kilowatt photovoltaic system is monitored by Frank Vignola of the University of Oregon Solar Radiation Monitoring Lab which helped the Energy Trust of Oregon and Christopher Dymond of the Oregon Department of Energy calculate performance expectations for solar power production in Central Oregon.  In 2004 a state solar incentive program encouraged the company's expansion of operations to Milford, Connecticut.  In 2006 they became a premier dealer for SunPower photovoltaic panels.  In 2008 Sunlight Solar was awarded Sunpower's "Intelegant" award for excellence.  In 2008 Sunlight Solar won the Central Oregon Builder's Association award for "Sub-Contractor of the Year".  In 2009 the company expanded to Waltham, Massachusetts.  In 2010 the company opened an office in Portland, Oregon.  In 2010 Sunlight Solar partnered with Habitat for Humanity to install 25 photovoltaic systems on new production high performance homes. <SEP>  In addition to developing, building, owning, and operating solar power plants and wind energy plants, it also manufactures high purity polysilicon, monocrystalline silicon ingots, silicon wafers, solar modules, solar energy systems, and solar module racking systems. Originally a silicon-wafer manufacturer established in 1959 as the Monsanto Electronic Materials Company, a former business unit of Monsanto Company, Monsanto sold the company in 1989.  Prior to May 30, 2013, the company was known as MEMC Electronic Materials; the name change to SunEdison reflects the company's focus on solar energy. SunEdison, Inc. is a global renewable energy company headquartered in the U.S.  SunEdison's corporate headquarters are in Maryland Heights, Missouri, and the company's operational and solar headquarters are in Belmont, California with offices throughout the world. <SEP>  SunEdison built the array of photovoltaic panels, and Duke Energy buys all the output from the solar farm.  The solar farm is located on North Carolina Highway 47, off New Jersey Church Road. The Davidson County Solar Farm is a 17.2 megawatt solar power station located in the heart of North Carolina, near the community of Linwood. <SEP> The Roll Out Solar Array, known as ROSA, is a solar array designed by NASA.  This new type of solar array provides much more energy than the old solar arrays.  Traditional solar panels used to power satellites can be bulky with heavy panels folded together using mechanical hinges.  When launching into space, mass and volume are everything, and ROSA is 20 percent lighter and four times smaller in volume than rigid panel arrays.  It is a flexible and rollable solar array like a measuring tape wound on its spool.  The new solar array design rolls up to form a compact cylinder for launch with significantly less mass and volume, potentially offering substantial cost savings as well as an increase in power for satellites.  Being smaller and lighter than the traditional solar panels, ROSA has a center wing made of a flexible material which support the strings of photovoltaic cells that churn out electrical energy.  Both the sides of the wing have a narrow arm that extends through the length of the wing to provide support to the array, called a high strain composite boom.  The booms look like split tubes made of a stiff composite material, flattened and rolled up lengthwise.The array does not need any motor to unfurl.This is achieved using the energy stored in the booms that is released as each boom transitions from a coil shape to a straight support arm.  Those solar wings are then deployed due to strain energy in rolled booms that are present at the two ends of the structure.