Danfoss Drives is doubling its Loves Park, Ill., facility that produces variable frequency drives, adding both production and office space. After expansion, the facility will be LEED-certified and registered with the U.S. Green Building Council. The LEED (Leadership in Energy and Environment Design) building rating system promotes sustainability in design and construction practices. Danfoss designs and manufactures variable frequency drives (VFDs) for efficient control of ac motors used in applications that include food and beverage, material handling, and other industrial applications. The company moved into their current facility in 2001, located on 18 acres. The building expansion will use the remainder of the acreage, so the company has purchased another 17 acres of land to ensure the possibility of contiguous expansion beyond 2011.