Megadrill to Build Power Highway Below Stockholm’s Landmarks
Sweden’s growing capital needs more electricity for homes and new industries.
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A drill longer than the city’s tallest skyscraper has been constructed just outside Stockholm to build a tunnel for new power cables needed to meet soaring demand.
Elektra, a 240-meter (787 feet) long specially built boring machine weighing more than 1,000 tons, will pierce through the city’s rock of granite and gneiss. Drilling the tunnel rather than the more common method of blasting will create less vibration. It will run below two of the city’s universities, the exclusive Ostermalm neighborhood and the Skeppsholmen island that houses a museum of modern art.