Troll A 1&2
O&G ElectrificationOperationalNO88 MW60 kV70 km2005
Also known as:Troll A Precompression Electrical Drive System (EDS), Troll Electrical Drive System (EDS), Troll A EDS
Status:Operational
Capacity:88 MW
Type:og electrification
Website:www.hitachienergy.com
Troll A 1&2 is a Norway-to-Norway subsea power interconnector delivering shore-based electricity to the offshore Troll A installation. Implemented as an HVDC Light “power‑from‑shore” link, the project connects an onshore rectifier station at Kollsnes to an offshore inverter module at Troll A via roughly 70 km of subsea cable. Commissioned...
Supply Chain (1)
Project Timeline (3)
1 Oct 2005Commercial Operations Full Power
Troll A 1&2 entered commercial operation on 1 October 2005, when the 88 MW HVDC Light power-from-shore system began delivering electricity from the onshore rectifier station at Kollsnes to the offshore Troll A platform via approximately 70 km of subsea cable at plus or minus 60 kV. This was the world first HVDC Light installation to an offshore platform, replacing gas turbine-driven compressors with electrically driven units. Testing had been completed in February 2005, with the two compressor units brought into operation in early October. The system was delivered by ABB (now Hitachi Energy).
2005Onss Commissioned
The Troll A 1&2 HVDC Light power-from-shore link between the onshore converter station at Kollsnes and the Troll A platform in Norway was successfully completed and commissioned in 2005, providing 88 MW of transmission capacity at ±60 kV via four 70 km submarine cables to supply offshore compressor power.
2002Converter Supplier Selected
In 2002, Statoil (now Equinor) awarded Hitachi Energy (then ABB) a contract to deliver the world’s first power‑from‑shore HVDC Light transmission system to the Troll A platform, referred to as Troll A 1&2. The award covered the onshore rectifier at Kollsnes and the offshore inverter equipment on Troll A, enabling ±60 kV HVDC Light power transmission over roughly 70 km of submarine cable from the Norwegian grid to the offshore gas platform.