Newcleo vs Siemens Energy
Side-by-side comparison of AI visibility scores, market position, and capabilities
Newcleo develops Gen IV lead-cooled fast reactors fueled by nuclear waste; $755M+ total private funding; $125M raised in 2025; 900+ employees; €80M+ 2024 revenue; joint venture Newvys in Slovakia to deploy four 200 MWe reactors.
About
Newcleo is a London and Paris-based nuclear technology company developing next-generation Lead-cooled Fast Reactors (LFR) designed to run on recycled nuclear waste as fuel. Founded in 2021 by Stefano Buono (former CERN physicist), Newcleo targets the dual problem of nuclear waste accumulation and clean energy scarcity by using minor actinides and plutonium separated from spent fuel as its primary fuel source. This approach simultaneously reduces the radiotoxicity and volume of nuclear waste stockpiles while generating zero-carbon electricity and industrial heat.
Frankfurt-listed (ETR: ENR) energy technology company at €34.5B FY2024 revenue with 13-15% growth 2025; Siemens Gamesa offshore wind and gas turbines competing with GE Vernova and Vestas for energy transition infrastructure.
About
Siemens Energy AG is a Munich, Germany-based energy technology company — listed on the Frankfurt Stock Exchange (ETR: ENR), partially owned by Siemens AG (25%+ stake) following the September 2020 spin-off — providing power generation (gas turbines, steam turbines, generators), grid infrastructure (transmission technology, HVDC systems, transformers), and energy transition solutions (green hydrogen, offshore wind through its 73%-owned Siemens Gamesa Renewable Energy subsidiary) to utilities, industrial customers, and governments globally. Siemens Energy generated €34.5 billion in revenue in fiscal year 2024, with Q2 FY2025 revenue of €10.0 billion (+20.7% comparable) and Q3 FY2025 revenue of €9.7 billion (+13.5% comparable), projecting 13-15% revenue growth for full-year FY2025 at a 4-6% profit margin.
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