Summary
The increase lasted about ninety minutes, unlike the rapid spikes usually expected.
Such prolonged currents can strain infrastructure and increase the risk of outages.
Key Points
3 points1
Geomagnetic storms can induce long‑duration currents in transmission lines.
2
Gradual current buildup may be harder for grid operators to detect.
3
Extended stress on the grid can lead to equipment wear or temporary blackouts.
New Words to Learn
4 wordsGeomagnetic storm
A disturbance in Earth’s magnetic field caused by solar activity.
Induced currents
Electric currents generated in conductors by changing magnetic fields.
Power grid
The network of power plants, transmission lines, and distribution systems that deliver electricity.
Transmission lines
High‑voltage wires that move electricity over long distances.
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