Combined-cycle power plant
The 446MW Landivisiau power plant is a combined-cycle power plant under development in Brittany, France.
Total Direct Énergie (TDE) subsidiary Compagnie Electrique de Bretagne (CEB) is developing the plant. Siemens was awarded a €450m ($493m) contract for turnkey construction and supply of turbines, generators, and control system for the plant in September 2019.
Siemens will also operate and maintain the plant for 20 years under the contract. The company is responsible for providing remote diagnostic services that form part of its Omnivise Digital Service portfolio.
Siemens Financial Services (SFS) held a 40% equity stake in the project during the seven-year development phase. The company sold its stake to TDE upon signing the turnkey contract.
The plant is expected to begin operations in the second half of 2021. Power generated by the plant will be sold to Électricité de France (EDF) under a power purchase agreement at a tariff equivalent to 95% of the hourly price on EPEX, an exchange for the power spot markets in Europe.
Landivisiau combined-cycle power plant will be located in the Finistère department of north-west Brittany. It will occupy 3.5ha on a 13ha site in the Verna area.
The site is surrounded by a well-developed economic activity zone and is accessible via the Rennes-Brest expressway.
Landivisiau power station will utilise natural gas as the primary fuel to generate power. It will include a SGT5-4000F gas turbine, a SST5-3000 steam turbine, a SGen5-2000H generator, a heat-recovery steam generator (HRSG), and a SPPA-T3000 control system.
It will be connected to the natural gas transmission network via a 20km-long new pipeline, which will be connected to a proposed 111km-long pipeline between Pleyben (Finistère) and Plumergat (Morbihan).
The plant will employ a remotely read load profile meter along with additional equipment to facilitate remote metering.
CEB will also set up a co-generation system to utilise the heat generated by the power plant as part of the Breton electric pact. Heat produced from the plant will provide a heating system for installations in the vicinity while replacing electric convectors or boilers.
Landivisiau will be the first plant in France to be equipped with a combined gas cycle with co-generation. It forms a part of the sustainable development policy of TDE.
The only existing power stations in Brittany are the Brennilis and Dirinon gas turbine plants, which are approaching the end of their life and are expected to be suspended by 2023. The closure of the existing plants would lead to an annual residual capacity shortfall of up to 600MW by 2023.
The increase in electricity consumption in Brittany rose by 9.9% from 2006 to 2014. Brittany was found to represent 6.3% of growth in peak demand while contributing to 4.4% of annual electricity consumption.
The region was also found to be the third most dynamic in France in terms of the increase in electricity consumption.
The Landivisiau power plant is being developed with an estimated investment of €450m ($497m) while the pipeline for the plant will be developed with an estimated investment of €100m ($122.9m).
The transmission infrastructure is estimated to cost between €30m ($32.8m) and €40m ($43.7m) while the gas grid connection is estimated to cost between €20m ($21.8m) and €30m ($32.8m).
The European Commission approved financial assistance for the project, subject to a condition that CEB will not be able sell the power generated by the plant through long-term contracts to any firm with a share of more than 40% in the French electricity generation market.
French electricity grid operator RTE is responsible for developing the grid connection for the Landivisiau power plant. GRTgaz will develop the pipeline for the transmission of natural gas to the plant.
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