Raw 16WW Solar PV Intraday Generation Data
The Sunny Beam receives generation levels from the inverters in the loft by radio. The Sunny Beam is plugged into the Raspberry Pi USB to power it and poll for stats every minute.
Periods of zero generation (after an initial 0 sample) are not recorded to save space and energy.
See copies of the per-minute and per-day gathering scripts below. These use sunnybeamtool
to talk to the SMA SunnyBeam plugged into the RPi server's USB:
The Raw 16WW Solar PV Intraday Generation Data (daily) goes back further, to 2009-09. It initially relied on manually downloading the data, so has gaps. Sometimes the tool reports data as corrupt and it is effectively lost. The SunnyBeam clock drifts and so the finer-grained data in the same files would need to be corrected for drift.
The PV went up in phases: the west facing part (1/4 of the final size) went up first (2008-02). Then twice that facing east (2009-02), then a final chunk doubling the size of the west-facing array (2010-04).