Since August 2001, through June 2009, this photovoltaic station collected, processed, displayed and archived data about the weather in Cambridge and about the performance of the photovoltaic (pv) system itself. This "stand-alone" pv system included a single module, rated at 60 watts and inclined at 60 degrees up from horizontal, batteries for energy storage, a micro-processor (in the grey box), and a radio transmitter that communicated all data to a computer which, in turn, was connected to a server over the network. You are connected to this server.
Measures of ambient temperature, wind speed and wind direction, battery voltage and pv module temperature were taken every two seconds. The current-voltage characteristic curve of the module was taken every minute. While data collection has been suspended (due to repairs of the roof) archived data is available for downloading. There are also two simulation routines available, one for simulating the performance of a "stand-alone" pv system of arbitrary load, battery capacity, photovoltaic array size and array tilt and the other for simulating a grid connected system. Both simulations can be run using the archived data for solar flux for any month you specify.
Note: Site under reconstruction.
