The Digester
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Iberdrola awards 3.5bn euro contracts for 640 km UK subsea power link

Eastern Green Link 4 will install about 640 km of mainly subsea HVDC cable and two 525 kV converter stations to carry 2,000 MW between Scotland and England, with contracts awarded to Siemens Energy and Prysmian for about 3.5 billion euros.

Mar 30th 2026 · United Kingdom

Insights

  • Iberdrola through SP Energy Networks has contracted Siemens Energy and Prysmian for the Eastern Green Link 4 project at about 3.5 billion euros.
  • The project includes roughly 640 kilometres of cable, mostly submarine, with about 530 km undersea and 116 km underground.
  • Two HVDC converter stations will operate at 525,000 volts to transmit power efficiently between Fife in Scotland and Norfolk in England.
  • Eastern Green Link 4 will have 2,000 MW capacity, enough to supply more than 1.5 million homes, with main construction starting in 2028 and operation expected in 2033.
  • Iberdrola plans to invest 14 billion euros in UK transmission networks to 2031 and 20 billion euros in the country by 2028 to strengthen energy security.

Sources