how long can a solar flare knock out power
Geomagnetic storm According to a study by Metatech corporation, a storm with a strength comparable to that of 1921 would destroy more than 300 transformers and leave over 130 million people without power in the United States, costing several trillion dollars.[27] The Daily Mail even claims that a massive solar flare could knock out electric power for months, but[28] these predictions are contradicted by a NERC report that concludes that a geomagnetic storm would cause temporary grid instability but no widespread destruction of high-voltage transformers. The report points out that the widely quoted Quebec grid collapse was not caused by overheating transformers but by the near-simultaneous tripping of seven relays.[29]
Cochin International Airport With over 2 million sq ft in area, the airport's Terminal 3 is India's fourth largest terminal. On 18 August 2015, Cochin International Airport became the world's first fully solar powered airport with the inauguration of a dedicated solar plant.[8][9]