A small arcade break from the PVDIS team, playable in the browser.
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Hot roof, fewer watts
The label says 440 W. The July roof says about 389 W. Not broken, just hot: at −0.29 %/°C, cells at 65 °C lose around 11.6 %.
Bifacial gain: datasheet vs field
The datasheet says +25 %. Measured in the field: +8.9 %. A real gain, just not 25 %.
Solar kWh per person
Capacity shows what is installed. Generation shows what it delivers. World average 2024: 263 kWh per person, up from 27 in 2014.