Boston-based FM Approval has developed two approval standards covering all forms of solar modules on roof-mounted systems. It will test modules at its lab in West Glocester, R.I. TUV Rheinland PTL will use its lab in Tempe, AZ.
Boston-based FM Approval has developed two approval standards covering all forms of solar modules on roof-mounted systems. It will test modules at its lab in West Glocester, R.I. TUV Rheinland PTL will use its lab in Tempe, AZ.