Founded in 1923, Granite City Electric Supply Company is one of the largest electrical supply companies in New England that serves electrical contractors, commercial and industrial customers, institutions and the general public from more than 20 locations and several distribution centers. It supports various charitable organizations and sponsors Joshua s Run, the South Shore YMCA and the South Shore Conservatory of Music. The company s switchgear division designs and sells high-, medium- and low-voltage switchgear products. Granite City Electric Supply Company provides emergency response, project management and commercial lighting services. Its fire and security division offers fire and security alarm installation and engineering services. The company operates several lighting showrooms that stock and supply decorative lighting products and accessories. Granite City Electric Supply Company has a partnership with Boston Red Sox and maintains a location in Hartford, Conn.