Fleetzero
Fleetzero builds modular containerized battery and electric/hybrid propulsion systems, plus marine autonomy software, for commercial ship owners and U.S. defense customers seeking to decarbonize and remotely operate ocean-going vessels.
- Company typePrivate
- Founded2021
- HeadquartersAuburn, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Fleetzero does
Fleetzero is a Houston, Texas-based marine technology company founded in 2021 that designs and integrates modular containerized battery systems and electric/hybrid propulsion solutions for commercial vessels, with the stated goal of decarbonizing ocean freight. Its core product, the Leviathan Modular Energy Storage System, delivers 3.8 MWh of energy in roughly 25% of a standard container footprint and is positioned as scalable from small support vessels up to the largest ships, supporting both newbuild and retrofit projects. Complementary offerings include a Marine Battery Container for long-range missions (e.g., Pacific Ocean transits), a mobile 55 MWh Battery Barge for charging multiple vessels, and a Marine Autonomy Stack consisting of OctoDrive (autonomy software), OctoPod (tele-operated command center), and OctoBox (a portable retrofit kit for adding autonomy to existing ships).
The company generates revenue primarily through hardware sales of propulsion and battery systems, supplemented by software licensing and integration services tied to its autonomy stack. Pricing is quote-based and project-specific, delivered through direct enterprise sales with multi-year contracts and end-to-end integration from concept through commissioning. Fleetzero serves two primary customer segments: commercial maritime operators (ship owners, operators, and shipping companies targeting fuel cost reduction and emissions compliance, with AET/MISC Group as a named anchor) and U.S. defense and government entities (Navy, Coast Guard, MARAD, DoD) requiring autonomous, Jones Act-compliant, domestically built vessels. Strategic investors include Maersk Growth, Breakthrough Energy Ventures, Obvious Ventures, Y Combinator, and Founders Fund, and the company has raised approximately $60 million in total capital to fund a Houston manufacturing facility ramping from 300 MWh/year to a planned 3 GWh/year over five years.
Fleetzero firmographics
Firmographics- Name
- Fleetzero
- Legal name
- Fleetzero
- Website
- https://shipfleetzero.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Fleetzero builds modular containerized battery and electric/hybrid propulsion systems, plus marine autonomy software, for commercial ship owners and U.S. defense customers seeking to decarbonize and remotely operate ocean-going vessels.
- Ownership category
- akta.pro rank
Fleetzero industry classification
Industry- Product category
- Marine Electrification & Propulsion Systems
- NAICS
- Ship Building and Repairing (336611), Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing (334511)
- SIC
- Engines & Turbines (3510)
- akta.pro primary industry
- Marine Hybrid & Electric Propulsion Systems (IMAJAHAC)
- akta.pro secondary industries
- Energy Storage Systems for Marine (Batteries, supercapacitors) (IMAJAHAJ), Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN), Shipboard Propulsion, Power Generation & Energy Storage (IMABAKAF), Propulsion, Power & Energy Systems Design (Diesel, Hybrid, Electric, Alternative Fuels) (IMAJAGAE), Marine Power Generation & Energy Storage (Generators, Batteries, UPS) (IMAJAJAB)
Keywords
Where Fleetzero is headquartered
LocationHeadquarters
- HQ city
- Auburn
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Fleetzero business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Technology or R&D, Supply Chain, Infrastructure, Marketing or Sales
Revenue model
- Marine Battery and Propulsion Systems: Fleetzero sells hybrid and electric propulsion systems for commercial vessels, including the Leviathan battery energy storage system. The company provides both newbuild integration and retrofit solutions, offering end-to-end services from concept to commissioning. Revenue is generated through hardware sales and associated integration/professional services.
- Autonomy Technology Systems: Fleetzero offers marine autonomy stack products including OctoDrive (software), OctoPod (command center), and OctoBox (retrofit system) that enable remote vessel operations. Revenue derived from software licensing and hardware systems for autonomous vessel capability.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom modular battery and propulsion solutions |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Fleetzero product offering
Product offeringCore offering
Fleetzero designs, manufactures, and integrates modular containerized battery energy storage systems (the Leviathan platform) and electric/hybrid propulsion systems for commercial cargo vessels, with optional marine autonomy capabilities. The company sells hardware systems, including the Marine Battery Container and Battery Barge, alongside its OctoDrive/OctoPod/OctoBox autonomy stack, providing end-to-end integration services from concept to commissioning for ship owners, operators, and defense customers.
Product overview
Fleetzero offers a unified platform combining the Leviathan Modular Energy Storage System with the Marine Autonomy Stack. The Leviathan system (including the Marine Battery Container and Battery Barge) provides scalable battery and propulsion solutions for vessel electrification, while the Marine Autonomy Stack (OctoDrive, OctoPod, OctoBox) extends capabilities to autonomous and remotely crewed vessel operations.
Differentiator
Problem solved
Functional benefit
Brands
- Leviathan: Modular energy storage system for marine batteries, providing scalable power solutions for commercial vessels with double the power at half the price of other marine solutions.
- OctoDrive
- OctoPod
- OctoBox
Products and services
- Leviathan Modular Energy Storage System A modular containerized marine battery energy storage system scalable from modules to megawatts for hybrid or all-electric propulsion, offering double the power at half the price compared to other marine solutions, sold to commercial ship owners and defense customers.
- Marine Battery Container Proprietary containerized battery system delivering 3.8 MWh of energy in 25% of a standard container footprint, enabling long-range missions including Pacific Ocean crossings on a single charge for commercial cargo vessels.
- Battery Barge Mobile charging barge with 55 MWh of expandable energy storage capacity designed to charge multiple vessels and fit fleet operations.
- Marine Autonomy Stack Integrated autonomy offering for commercial and defense vessels combining OctoDrive (autonomy software for vessel navigation), OctoPod (tele-operated command center for remote monitoring and control), and OctoBox (portable retrofit system enabling existing ships to be upgraded for autonomous or remote operation).
Quantifiable outcome
- Up to 82% reduction in greenhouse gas emissions for hybrid-electric vessel retrofits
- +3 more outcomes
Companies that use Fleetzero
Customer profileNamed customers2 records
Segments2 records
Ideal customer profiles2 records
Fleetzero technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability1 record
Feature5 records
Fleetzero partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and major.
- Thoma-Sea Marine ConstructorscoreCollaboration to develop and deploy integrated autonomous vessel solutions. Thoma-Sea, a Louisiana shipbuilder, provides domestic shipbuilding capacity and construction expertise for autonomous diesel-electric vessels designed for contested waters, persistent operations, and supply delivery. Partnership combines Fleetzero's Leviathan battery system and autonomy stack with Thoma-Sea's shipbuilding capabilities.
- GlostencoreCollaboration with naval architecture firm Glosten to design autonomous vessels with low radar cross-section for stealth operations. Glosten provides vessel design expertise for the autonomous diesel-electric platform targeting commercial, government, and defense customers. Partnership addresses autonomous cargo operations, ISR and patrol missions, and electrified harbour craft.
- AETcoreAgreement to develop the world's longest-range plug-in hybrid-electric vessel by retrofitting one of AET's Lightering Support Vessels with Fleetzero's modular marine battery system. The retrofitted vessel will operate primarily on battery power, reducing greenhouse gas emissions by approximately 82%. Partnership includes pilot project to evaluate feasibility with potential for broader deployment across AET's and MISC's fleets.
- American Bureau of Shipping (ABS)majorMemorandum of understanding to jointly explore technical requirements for containerized battery systems for maritime applications. Partnership focuses on design standards, testing methods, and quality control procedures to address deployment barriers including energy density constraints and safety challenges. Goal is cost competitiveness with diesel for zero-emission shipping.
Scale indicators9 records
Recent moves7 records
Expansion highlights6 records
Fleetzero competitors and assessment
Company assessmentDirect peers
- Corvus Energy: Norway-based leading supplier of battery energy storage systems for maritime applications including hybrid and fully electric propulsion. Most direct competitor to Fleetzero's Leviathan system in the marine battery space, serving similar commercial vessel segments (ferries, offshore, cargo).
- Kongsberg Maritime: Provider of autonomous vessel control systems, marine automation, and integrated propulsion solutions. Directly comparable to Fleetzero's Marine Autonomy Stack (OctoDrive/OctoPod/OctoBox), with overlapping commercial and defense customer bases in remote and autonomous vessel operations.
- Leclanché: Swiss manufacturer of lithium-ion battery systems specifically designed for maritime and rail applications. Offers modular marine battery solutions comparable to Fleetzero's Leviathan, targeting similar commercial vessel electrification use cases with shipping operators and integrators.
- EST-Floattech: Dutch supplier of battery energy storage systems for maritime vessels including ferries, workboats, and offshore vessels. Direct competitor in marine battery space with similar modular product approach and comparable target customer segments in European commercial shipping.
Broad incumbents
- Wärtsilä: Global marine systems incumbent offering hybrid propulsion, energy storage, and vessel automation as part of a broad portfolio. Competes with Fleetzero across multiple product lines including hybrid electric systems and autonomous vessel technology, with established relationships across major shipping operators.
- ABB Marine & Ports: Established provider of electric propulsion systems, energy storage, and automation solutions for ships. Competes broadly with Fleetzero across marine electrification and vessel autonomy, with deeper engineering resources and broader installed base across global shipping.
- Rolls-Royce Power Systems (mtu): Major marine propulsion systems provider (mtu brand) offering hybrid and fully electric propulsion solutions for commercial vessels and naval applications. Competes with Fleetzero in marine electrification and has parallel autonomous vessel development programs.
Emerging players
- Spear Power Systems: Marine and defense battery solutions provider with focus on high-power density lithium-ion systems. Comparable to Fleetzero in targeting both commercial maritime and defense applications, though with smaller installed base and less integrated propulsion offering.
- Prometheus Fuels (and other maritime decarbonization startups): While primarily an e-fuel company, represents the broader wave of maritime decarbonization ventures competing for similar investor capital (Breakthrough Energy Ventures portfolio) and customer attention. Reflects the competitive landscape for maritime decarbonization capital and partnerships.
Others
- Bureau Veritas (Marine & Offshore): Maritime classification society providing certification and standards services for marine battery and alternative fuel systems. Comparable to Fleetzero's ABS partnership engagement, and represents the regulatory ecosystem Fleetzero must navigate for class approval of its containerized battery systems.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
Fleetzero social profiles
Digital presenceFleetzero financial estimates
Financial estimateRevenue estimate
Valuation estimate
Fleetzero leadership team
Management profileNumber of profiles
Profiles2 records
Fleetzero funding detail
Funding detailFunding overview
Funding rounds2 records
Investors14 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Fleetzero M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Fleetzero
What does Fleetzero do?
Fleetzero designs, manufactures, and integrates modular containerized battery energy storage systems (the Leviathan platform) and electric/hybrid propulsion systems for commercial cargo vessels, with optional marine autonomy capabilities. The company sells hardware systems, including the Marine Battery Container and Battery Barge, alongside its OctoDrive/OctoPod/OctoBox autonomy stack, providing end-to-end integration services from concept to commissioning for ship owners, operators, and defense customers.
Is Fleetzero a public or private company?
Fleetzero is a private company. It is classified as venture growth investor backed and is currently operating.
When was Fleetzero founded?
Fleetzero was founded in 2021. It employs 11 to 50 people.
Where is Fleetzero based?
Fleetzero is headquartered in Auburn, United States, in the North America region.
How does Fleetzero make money?
Two revenue lines are on record. Marine Battery and Propulsion Systems are the primary driver. The others are autonomy Technology Systems.
Who are Fleetzero's main competitors?
Direct peers on record are Corvus Energy, Kongsberg Maritime, Leclanché and EST-Floattech. Broad incumbents are Wärtsilä, ABB Marine & Ports and Rolls-Royce Power Systems (mtu). Emerging players are Spear Power Systems and Prometheus Fuels (and other maritime decarbonization startups). Bureau Veritas (Marine & Offshore) is listed as an others.
Does Fleetzero have an API?
No public API is recorded for Fleetzero.
What industry is Fleetzero in?
Fleetzero's product category is Marine Electrification & Propulsion Systems. Its primary akta.pro industry code is IMAJAHAC, Marine Hybrid & Electric Propulsion Systems, with a secondary code of IMAJAHAJ, Energy Storage Systems for Marine (Batteries, supercapacitors). Its NAICS code is 336611 and its SIC code is 3510.