PRNewswire · Jun 2026
Commercial launch of OctoDrive, OctoPod, and OctoBox; expands Fleetzero beyond batteries into autonomous and remotely crewed vessel operations.
Public company, workplace, funding, and market signals
Fleetzero is a Houston-based maritime technology company building modular marine batteries, hybrid/electric propulsion, and autonomy systems for commercial and defense vessels, with a strong retrofit-and-integration focus.
Primary product
Leviathan modular marine energy storage system and OctoDrive autonomy stack
Founded
2021
Headquarters
1805 Brittmoore Rd, Houston, Texas 77043, United States
Team size
30-40
Work style
Onsite
Industry
Maritime Transportation
Sub-industry
Marine energy storage, hybrid/electric propulsion, and vessel autonomy
Offices
8 jobs at Fleetzero
Business model
Stage
Series A
Total raised
$58.6M
Latest round
Series A · Jan 2026
Latest amount
$43M
Jan 2026 · Obvious Ventures
Mar 2024 · MOL PLUS
Jun 2022 · Breakthrough Energy Ventures
Mar 2022
Leadership
Steven Henderson
Co-founder & CEO
Mike Carter
Co-founder & COO
Vice President of Engineering
Vice President of Finance and Corporate Development
VP of Marketing
Head of Finance & Commercial Operations
Chief Engineer
Culture signals emphasize mariners, U.S. Navy veterans, and engineers; the company describes itself as built by mariners for mariners and says it expects high skill, discipline, and resolve.
Work style
Onsite
Compensation
No public salary bands or compensation package are disclosed on the careers page; openings are posted as on-site, full-time roles in Houston.
Pricing
Quote-based B2B hardware and engineering project pricing; request-a-quote / request-a-demo sales motion
Differentiators
Technology
Customers
Competitors
Estimated revenue
Approximately $2.1M-$4.4M (third-party 2026 estimate)
Estimated monthly visits
1.8K
Traffic estimate as of Jun 2026
PRNewswire · Jun 2026
Commercial launch of OctoDrive, OctoPod, and OctoBox; expands Fleetzero beyond batteries into autonomous and remotely crewed vessel operations.
PRNewswire · Jun 2026
Partnership to develop autonomous diesel-electric vessels for commercial, government, and defense customers using Fleetzero propulsion and autonomy systems with Thoma-Sea shipbuilding and Glosten design expertise.
PRNewswire · Jan 2026
Announced a $43M Series A led by Obvious Ventures with participation from Maersk Growth, 8090 Industries, Breakthrough Energy Ventures, Y Combinator, Benson Capital, Shorewind, and others; also opened a Houston manufacturing and R&D facility.
Glosten · Aug 2025
Announced work on retrofitting an AET-owned lightering support vessel with Fleetzero plug-in hybrid-electric propulsion, positioning it as a long-range hybrid-electric showcase.
AET · Dec 2024
AET and Fleetzero agreed to retrofit an AET lightering support vessel with plug-in hybrid-electric propulsion, highlighting a major customer/partner milestone.