Headquartered in Greenfield, Massachusetts, GeoSun Design is a Nationally Certified provider of professional design, consulting and project management services firm (IGSHPA # 18863-0209, IREC/ISPQ). Our outstanding team has the credentials and experience to help you reach your energy goals. GeoSun Design follows a sensible approach to the implementation of renewable energy systems. Every application is unique and needs to be evaluated independently without using 'rule of thumb' guides. With a critical analysis of each project and the proper design of a system we can develop an environmentally friendly solution to your energy needs while satisfying economic realities.