HVDC Cross-Channel, Electrical interconnector under English Channel between France and United Kingdom
The HVDC Cross-Channel is an underwater power cable running beneath the English Channel, linking Calais in France to Sellindge in England. Eight submarine cables carry electricity at high voltage, with converter stations at each end transforming the current between direct and alternating forms.
The first power system began operating in 1961 using older technology, until it was replaced in 1984 by a more modern facility. The newer version worked with much higher capacity and supplied electricity across both countries.
The power link shows how two countries work together to share electricity across their borders. At the converter stations, visitors can observe how modern energy technology keeps both networks balanced.
The power line operates underwater, so visitors mainly see the stations on land at each coast. It helps to visit both endpoints to get a complete picture of how the system works.
A fire in 2021 at the Sellindge station interrupted power supply and showed how critical this link is for both countries. The system required complete overhaul afterward to operate safely again.
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