THE ONE
- Menu is being prepared.
Korea’s only submarine propulsion inverter technology, validated over 12 years.
Proven Power Conversion for National Defense
A propulsion system that must maintain reliable operation
hundreds of meters underwater under extreme pressure and vibration.
THEONE is the only company in Korea that develops high-capacity submarine inverters
with its own technology.
Built on 12 years of accumulated engineering capability since 2013,
it converts multi-megawatt power at over 98% efficiency
and supports the operational capability of the Republic of Korea Navy.
12
+ 12 years of accident-free operation98
% Energy efficiency100
% Mission execution support
Through megawatt-class inverter technology designed to maintain reliable operation under severe conditions,
we provide core solutions for national security and the future energy industry.
Built on validated technology proven in submarine applications,
we are expanding into global utility PV, ESS, and SMR markets.
Built on unique defense references and proven engineering, we are extending this capability into future energy markets.
Korea’s only power control system for the propulsion system
of 3,000-ton-class submarines
Successful localization of megawatt-class inverter technology
through independently developed Korean engineering
Achieved power conversion efficiency above conventional competitors
(typically 96–97%)
Secured high-voltage stack design and insulation technology for next-generation power-grid applications
Expansion into large-scale renewable energy and robotics markets using defense spin-off technologies
Power-control technologies for nuclear-grade environments with durability under extreme conditions such as high temperature and radiation
By obtaining defense-standard compliance (MIL-STD-461/810) and international marine class certifications (DNV, KR), we have validated suitability for application in 3,000-ton-class and larger submarines as well as special-purpose vessels.
We have passed demanding electromagnetic interference and compatibility (EMI/EMC) tests as well as marine-environment durability tests, including high temperature, humidity, vibration, and shock, securing a high level of operational reliability.
We hold multiple domestic and international patents in core technologies including high-efficiency power-conversion topologies, thermal management design for high-density packaging, and ultra-low-noise control algorithms.
CORE BUSINESS
Securing a stable revenue base through follow-on submarine production and retrofit projects
Expanding market presence through global EPC opportunities in utility-scale PV and ESS markets
GLOBAL EXPANSION
Supplying core power-control system packages for overseas submarine export projects led by major Korean defense companies
Building MRO and technical cooperation networks with local defense companies in Southeast Asia and the Middle East
STRATEGIC ALLIANCE
Entering the global supply chain through technical collaboration with advanced SMR developers in Europe and North America
Advancing joint research and field validation for next-generation heavy-duty AMR platforms with global logistics automation companies
031-434-7471