Siemens AG

On 10 July 2012, Svenska kraftnät signed a turnkey contract ("totalentreprenad") with Siemens AB for a new switchgear facility at Nybro substation in Sweden, with a contract value of approximately SEK 109 million. The work prepared the 400 kV Nybro AC substation as the Swedish grid connection point for the NordBalt HVDC interconnector, providing the bay arrangements and high-voltage switchgear required to integrate the new ABB-supplied HVDC Light converter station into Svenska kraftnät's transmission network. Siemens AB acted as main contractor, responsible for engineering, supply and installation of the complete switchgear installation as an integrated turnkey package. The Nybro switchyard upgrade was a critical enabler for NordBalt's 700 MW, ±300 kV submarine link to Klaipėda in Lithuania, allowing bidirectional power flow into the Swedish 400 kV grid once the converter station was commissioned in 2015. The contract sat alongside parallel works at Nybro: ABB's converter-station build (under a separate €147m turnkey awarded 20 December 2010, now attributed to Hitachi Energy under the corporate-lineage rule) and NCC's onshore-cable trenching from Sandvik to Nybro (SEK 49m, awarded 2013-08-16). Together these formed the Swedish-side onshore infrastructure of the NordBalt link.