California
21 August 2017
↓68%
≈8.8 GW → 2.85 GW
typical level → maximum eclipse
What an eclipse does to solar power
When the Moon blocks sunlight, solar panels across the affected grid produce less power. In these four eclipses, output fell by 63% to 95%.
Yellow = reference solar output
Black = reduction during the eclipse
↓% = drop in solar output
Hover/tap a circle for eclipse-day output
India
21 June 2020
↓63%
≈19 GW → 7.1 GW
normal clear sky → maximum eclipse
Texas
8 April 2024
↓95%
13.8 GW → 0.7 GW
eclipse start → maximum eclipse
Portugal
12 August 2026
↓89%
0.39 GW → 0.042 GW
normal level → maximum eclipse