SubCtech’s Ocean Power products serve offshore oil and gas, environmental monitoring, subsea applications, AUVs, and ROVs
SubCtech, a leading provider of underwater technologies founded in 2010 by applied physicist and now CEO Stefan Marx, has grown into a maritime powerhouse based in Kiel, Germany
The company is a member of the Gabler/Possehl Group in Northern Germany and specialises in next-generation R&D, custom project consulting, thorough prototype testing, and high-quality manufacturing according to international standards. Customers benefit from reliable, field-tested technology that reduces CAPEX and OPEX while significantly lowering CO2 emissions.
ADVANCED SOLUTIONS FOR SUBSEA APPLICATIONS
SubCtech’s Ocean Power products serve offshore oil and gas, environmental monitoring, subsea applications, and autonomous vehicles (AUVs) as well as remotely operated vehicles (ROVs). Its flagship PowerPacks line features advanced Li-Ion battery systems with modular and flexible configurations designed for various ocean depths and a lifespan of up to 25 years.
A key factor in SubCtech’s success is its adherence to strict safety standards. PowerPacks undergo rigorous testing to meet UN T38.3, MIL-STD, DNV, and API17F compliance. Designed for high-capacity, uninterruptible power supply (UPS) solutions, they operate reliably in extreme conditions, as Marx explains: “Our batteries are tested for heat resistance, shock tolerance, vibration, and EMC to ensure they meet the highest industry standards.”
These batteries feature automatic protection against overvoltage, undervoltage, overheating, overcharging, and short circuits. Advanced AI algorithms minimise false alarms and detect critical states. Unlike traditional alkali primary batteries, Li-Ion PowerPacks handle peak currents efficiently, operate at sub-zero temperatures, and support extended storage or use, making them ideal for demanding subsea and offshore applications.
THE ESS’ PROVEN SUCCESS IN OIL AND GAS
SubCtech recently developed a groundbreaking 2MWh (extendable up to 6MWh) Subsea Energy Storage System (ESS), marking a milestone in sustainable energy storage. With a Technology Readiness Level of 6 (TRL 6, API17Q), the ESS is now operational in the oil and gas sector, where it has demonstrated its effectiveness in supporting offshore power needs. Following its successful deployment, a key customer placed an additional order, underscoring the system’s reliability and growing demand in the subsea industry.
GLOBAL GROWTH AND SUSTAINABILITY INITIATIVES
As global demand for ocean power products rises, SubCtech has expanded its workforce to 85+ employees and plans to increase production facilities in 2025. “Our UN T38.3-certified Li-Ion batteries are transported worldwide via airline cargo, thanks to our professional sales network ensuring seamless service for our customers,” notes Marx.
FUTURE VISION: LEADERSHIP IN SUBSEA AND OCEAN POWER SOLUTIONS
SubCtech aims to strengthen its leadership in Ocean Power Solutions and Ocean Monitoring Systems. Actively seeking strategic partnerships, the company is dedicated to innovation in subsea energy storage and monitoring while maintaining a strong commitment to environmental responsibility.
As a trusted partner in marine technology, SubCtech’s Li-Ion PowerPacks and pioneering Subsea ESS meet the offshore industry’s most stringent demands. Its solutions significantly reduce CAPEX and OPEX, extend operational intervals, and lower CO2 emissions – a clear win for industry, the blue economy and the environment. The ESS’s operational success in oil and gas and subsequent reorder reinforce SubCtech’s reputation as a leader in sustainable subsea power and monitoring technologies.
For more information visit: www.subctech.com
