PETALUMA, Calif.--(BUSINESS WIRE)--Enphase Energy, Inc. (NASDAQ: ENPH), and My Generation Energy, Inc., a southeastern Massachusetts-based solar installer and developer, announced today the completion and commissioning of the Sippican Community Solar Garden® in Marion, Mass. The 900-kilowatt-DC commercial project is the largest North American installation to date featuring the advanced Enphase® C250 Microinverter System. My Generation began construction on the site in January 2015. The installa