The solar generation heatmap layer has been updated to finally take into account power plants which don't have generators mapped. Plant output is (roughly) estimated from area if there is none tagged.

The heatmap weightings have been re-calibrated somewhat (it's not an exact science) to better represent the scale of solar generation which is now present (see: China).

https://openinframap.org/#2.84/37.9/44.66/L,P,S