Switzerland’s power grid is part of a large pool of ebbing and flowing electricity spanning 25 countries, known as the Continental European (EC) power grid. © Mauro77photo | Dreamstime.com Enough electricity must be fed into it to keep it at a stable frequency. The EC’s magic number is 50 Hz. Maintaining this requires a carefully coordinated trans-national balancing act. When electricity consumption rises, power stations across the network must work harder. Normally the system works well....
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