OpenPVMapper capacity as a share of the register, by département
Low-voltage registered capacity is the denominator, the closest
France offers to a rooftop total. Brighter means OpenPVMapper accounts for more of it.
Per commune
Registered low-voltage kW (x) against OpenPVMapper kWp (y), log-log.
The diagonal is exact agreement.
Agreement statistics
Origin-forced slope, median ratio and rank correlation across communes.
The fourteen hand-mapped communes
Every visible panel drawn on sub-metre IGN imagery, with solar
thermal tagged separately. Recall is what transfers; precision here is optimistic,
because these communes are OpenPVMapper's own correction layer.
What the unmatched detections are sitting on
Not all of them are errors, and one class is systematic.
The module constant, measured
Register capacity divided by hand-mapped module area, read back
to each commune's own mapping year.
Capacity below the 400 m² detection floor
72 kWp = 400 m² of module at 0.18 kWp/m². Germany's figure is
measured against rooftop capacity; France has no rooftop field, so it is bracketed.
OpenPVMapper recall by installation size
Against the hand-mapped truth, in m² of module area.
One Sentinel-2 pixel is 100 m².
How each number here was produced, and what it cannot tell you