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ABB has developed and tested a 525 kilovolt (kV) extruded high-voltage direct current (HVDC) cable system to make renewable energy installations more efficient and cost-effective.

This cable system will more than double the power capacity to about 2,600MW from 1,000MW. It will also expand the cable's reach to distances of 1,500 kilometres, up from less than 1,000 kilometres, while keeping transmission losses under 5 per cent. The new cable offers a 64 per cent increase over 320 kV, currently the highest voltage deployed for this type of technology. The 525kV cable system can be deployed in subsea and underground applications, making it suitable for efficient power delivery through densely populated or environmentally sensitive areas or coastal and open-sea applications.

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