For our project, the office building has had a Solar Thermal Array that runs one of their packaged ACUs last year We are now installing the BTU submeters to measure the actual energy generated by the Solar Thermal Array used by the ACU. Should the performance period start from installation of the solar thermal array or from the installation of the submeters? LEED Online does not ask for photos, or automatic readings/logs, or calibration reports for the meter. Although, the reference guide asks for documentation of the installed on-site renewable energy systems. Please advise on performance period start date.