First 50 Hz HL for Keadby

3 September 2018



The first deployment of Siemens’ new HL gas turbine in a 50 Hz application will be at SSE’s 840 MW Keadby 2 unit in Lincolnshire, UK. Siemens will provide a full turnkey plant, capable of 63% combined cycle efficiency.


The first deployment of Siemens’ new HL gas turbine in a 50 Hz application will be at SSE’s 840 MW Keadby 2 unit in Lincolnshire, UK. Siemens will provide a full turnkey plant, capable of 63% combined cycle efficiency.

Siemens’ scope includes a 15-year long-term service contract, the first such contract for an HL-class gas turbine in Europe. Construction is due to begin this summer on what will be the second SSE CCGT unit at Keadby.

The decision to build Keadby 2 went ahead without SSE securing a capacity contract in the 2018 Capacity Auction, Said to be “testament to the company’s commitment to the project and trust in the technology Siemens can deliver.” Commercial operation of Keadby 2 is scheduled for 2022 as coal power plant closures come into effect.

In June 2017, Siemens announced it would validate its new HL class for the 60 Hz market at Duke Energy’s Lincoln County site in North Carolina.

Martin Pibworth, SSE’s Wholesale Director, said: “New CCGT complements SSE’s ambitions to develop more offshore and onshore wind as CCGTs remain well-placed to provide flexible, grid-scale back up to complement the large volumes of renewables the UK needs to meet its low carbon targets.” 



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