TenneT
...that TenneT, the Dutch transmission system operator, is a joint owner of the ±450 kV, 580 km (360 mi) NorNed, the longest high-voltage undersea power line in the world?
...that <b id="mwDmE"><a href="./TenneT" id="mwDmI" rel="mw:WikiLink" title="TenneT">TenneT</a></b>, the <a href="./Netherlands" id="mwDmM" rel="mw:WikiLink" title="Netherlands">Dutch</a> <a href="./Transmission_system_operator" id="mwDmQ" rel="mw:WikiLink" title="Transmission system operator">transmission system operator</a>, is a joint owner of the ±450<span id="mwDmU" typeof="mw:Entity"> </span>kV, <span about="#mwt26" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"580"},"2":{"wt":"km"},"3":{"wt":"mi"},"abbr":{"wt":"on"},"sing":{"wt":"on"}},"i":0}}]}' id="mwDmY" typeof="mw:Transclusion">580</span><span about="#mwt26" typeof="mw:Entity"> </span><span about="#mwt26">km (360</span><span about="#mwt26" typeof="mw:Entity"> </span><span about="#mwt26">mi)</span> <a href="./NorNed" id="mwDmc" rel="mw:WikiLink" title="NorNed">NorNed</a>, the longest high-<a href="./Voltage" id="mwDmg" rel="mw:WikiLink" title="Voltage">voltage</a> <a href="./Submarine_power_cable" id="mwDmk" rel="mw:WikiLink" title="Submarine power cable">undersea power line</a> in the world?