Arabelle Solutions

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Arabelle Solutions, formerly GE Alstom Nuclear Systems, or GEAST, for ‘GE Alstom’, most of which was spun off from GE Steam Power, is a French multinational specialising in nuclear activities related to steam turbines (Arabelle) for the turbine islands. It is present in nearly 16 countries including China, Finland, India, Romania and the United Kingdom, and headquartered in Nanterre, France. At Belfort, it is developing the Arabelle nuclear turbine, the most powerful in the world. Historically based in France, notably at its Belfort site, it has been a subsidiary of EDF since 31 May 2024. Originally a joint subsidiary named GE Alstom Nuclear Systems (GEAST) between General Electric and Alstom, it became an 80%-owned subsidiary of General Electric, then of GE Vernova, in October 2018. The French state held a 20% stake in GEAST. Headed by Frédéric Wiscart, GE Alstom Nuclear Systems also brought together GE Steam Power's nuclear activities, resulting from the acquisition of Alstom Power in 2015, through its two subsidiaries GE Steam Power Systems (formerly Alstom Power Systems) and GE Steam Power Service (formerly Alstom Power Services). The controversial sale to General Electric was accompanied by safeguards given the strategic nature of the turbines for France, which retained intellectual property rights and a golden share in GE Alstom Nuclear Systems (GEAST). When it was acquired by EDF, it was supplemented by GE Steam Power's global activities outside the Americas, also resulting from the acquisition of Alstom Power by the former US conglomerate General Electric in 2015.