Grid operators brace for solar power dip during 12 August eclipse
Developing story first seen 2 hours ago
A total solar eclipse is set to take place on Wednesday, 12 August 2026, with totality visible across Iceland, Greenland, northern Russia, and parts of Spain and Portugal, while a partial eclipse will be seen across northern parts of the United States, from Alaska to North Carolina. The event is drawing significant attention from astronomy enthusiasts worldwide, many of whom travel long distances to witness such rare celestial phenomena, and has also raised practical concerns among European energy experts about its potential impact on power grids.
The chief worry centres on solar power generation: as the Moon blocks sunlight along the eclipse's path, solar energy output will briefly and sharply drop, then rebound once totality passes. Grid operators across Europe are being warned to prepare for these rapid fluctuations in electricity supply, as balancing renewable output during such a sudden dip and recovery poses an operational challenge for maintaining stable power networks.
- Total solar eclipse crosses Iceland, Greenland, northern Russia, Spain and Portugal on 12 August 2026
- Partial eclipse visible from Alaska to North Carolina in the US
- European grid operators warned over sudden solar power output fluctuations
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Grid operators across Europe are getting ready for a total solar eclipse on Wednesday 12 August 2026. Totality, when the Moon fully blocks the Sun, will be visible over Iceland, Greenland, northern Russia and parts of Spain and Portugal, while people in northern parts of the United States will see a partial eclipse. Beyond its appeal to sky-watchers, the event has practical consequences because it briefly cuts off sunlight over a wide area.
Solar panels rely on continuous daylight to generate electricity, so as the Moon's shadow sweeps across the eclipse path, solar power output will drop sharply and then bounce back once the Moon moves on. This matters because modern power grids increasingly depend on solar energy, and operators must constantly match supply with demand to keep the network stable. A sudden dip followed by a rapid recovery is harder to manage than a gradual change, which is why grid operators are the ones flagging concern ahead of the event.
Coverage
- NPR — Solar eclipse to occur next week. Here is what to know
- BBC Science — What it’s like to chase solar eclipses around the world
- Daily Mail — Full solar eclipse on Wednesday evening could pile pressure on power grids across Europe, experts warn