U.S Small Business Administration's Eastern Pennsylvania 2022 Entrepreneurial Success of the Year. Lifeless interior? Green your décor with the grow light used by designers, growers and people like you! Soltech Solutions is an American company founded to develop and provide energy efficient lifestyle products. Operating out of Bethlehem, PA, our team is ever growing and continuously improving our product lines. We hope you love our products as much as we loved making them.