Ebb Carbon vs Siemens Energy
Side-by-side comparison of AI visibility scores, market position, and capabilities
Ebb Carbon uses electrochemical ocean alkalinity enhancement (OAE) to accelerate CO2 absorption by seawater and reduce ocean acidity; founded by ex-Tesla/SolarCity/Google X executives; raised $20M+ including a $17M Series A;
About
Ebb Carbon is a climate technology company founded in 2021 and based in South San Francisco, California, that has developed an electrochemical process to enhance the ocean's natural capacity to absorb and permanently store carbon dioxide. The company's core technology is based on ocean alkalinity enhancement (OAE): it uses electrolysis to remove acid from seawater, increasing its alkalinity, which causes the water to absorb additional CO2 from the atmosphere as a natural chemical response. The resulting carbon is stored as dissolved bicarbonate — stable in the ocean for tens of thousands of years — while the process simultaneously reduces local ocean acidity, partially countering ocean acidification in the areas where it is deployed. Ebb Carbon was founded by executives with deep experience in scaling clean energy technology, including alumni of Tesla, SolarCity, and Google X.
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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