What OptiFuel Systems does

OptiFuel Systems LLC is a U.S.-based manufacturer of zero-emission switcher and line haul locomotives, founded in 2013 by CEO Scott Myers and headquartered in Beaufort, South Carolina. The company has built a single integrated platform called Total-Zero™ that consolidates four powertrain options — Diesel-RNG Dual Fuel Hybrid, Hydrogen, Battery-Electric, and Diesel Hybrid — around modular Quick-Power™ engine pods and Quick-Disconnect fuel modules that can be swapped on track in approximately one hour using standardized ISO corner locks. OptiFuel sells new locomotives and offers refurbishment/repowering of existing fleets, with hardware prices spanning ~$1.7M for refurbished units (1,200–2,400 hp) to ~$5.5M for a 5,600 hp line haul locomotive, plus an integrated refueling and maintenance package through its Locomotive-as-a-Service (LAAS™) subscription model at ~$1.1M upfront and a fixed ~$3.00/DGE fuel rate over a 30-year term.

The go-to-market is a high-touch enterprise field-sales motion targeting Class I railroads (25,000+ line haul locomotives), 550 short-line Class 2/3 operators, and ports/mining/intermodal switching fleets, supplemented by federal grant assistance (GrantPro) and a pipeline-based distribution advantage where natural gas lines run alongside rail rights-of-way. The company pairs hardware with RNG fuel supply and refueling infrastructure (stationary 260,000 DGE/day stations and mobile refuelers). Commercial traction to date is early: four Tier 4 dual-fuel switchers delivered to Indiana Harbor Belt in 2019, hydrogen modules designed for Sierra Northern Railway, and CRISI grants (~$26.2M) awarded via Colorado State University Pueblo and the University of Delaware to fund FRA concurrence for Tier 5 switchers (2026) and line haul units (2027), with serial production of the 5,600 hp line haul targeted for 2028.

OptiFuel's revenue mix blends hardware sales (new builds, refurbishment, refueling equipment), recurring subscription revenue (LAAS), transaction fees (RNG fuel supply) and managed services (multi-decade maintenance). Customer concentration is narrow today, with named commercial buyers limited to two railroads and two universities, while ~$58.7M of cumulative funding plus grants — including a $30M Series A2 and a strategic capital partnership with Capital Q Ventures — is being deployed to convert early commercial interest into serial production and recurring service revenue.

Name

OptiFuel Systems

Legal name

OptiFuel Systems LLC

Website

https://optifuelsystems.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

1–10 employees

Short description

OptiFuel Systems designs and manufactures zero-emission switcher and line haul locomotives using a modular Total-Zero™ platform with swappable diesel-RNG hybrid, hydrogen, and battery-electric powertrains, serving Class I railroads, short-line operators, ports, and mining/intermodal fleets.

Ownership category

akta.pro rank

Product category

Railway Locomotives

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Motor Vehicle Transmission and Power Train Parts Manufacturing (336350)

SIC

Engines & Turbines (3510), Railroad Equipment (3743)

akta.pro primary industry

Truck & Commercial Vehicle Powertrain Manufacturing (Diesel/CNG/Hydrogen/Hybrid) (IMACABAJ)

akta.pro secondary industries

Hybrid Powertrain Integration Manufacturing (ICE-HEV/PHEV modules) (IMACAHAJ), Marine Hybrid & Electric Propulsion Systems (IMAJAHAC)

Keywords

• Zero emission locomotives
• Renewable natural gas
• Locomotive refurbishment
• Hybrid powertrain systems
• RNG refueling infrastructure

Headquarters

HQ city

Beaufort

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Infrastructure, Marketing or Sales

Revenue model

1. New Locomotive Sales: Direct sale of new Total-Zero locomotives including Diesel Hybrid, Dual Fuel Hybrid CNG/RNG, and Battery Electric options. Available Tier 5 locomotives ranging from switcher to line haul configurations.
2. Locomotive Refurbishment/Repowering: Repower existing locomotives with modular RNG/CNG power systems. Estimated cost $1.7-2.4 million for refurbished locomotives with 5-year warranty on engine pods and CNG storage.
3. Locomotive-as-a-Service (LAAS™): Integrated solution offering locomotives, tenders, refueling infrastructure, and RNG fuel for one fixed-rate fuel price plus upfront payment (~20% of retail). Includes 30-year use coverage with full maintenance.
4. RNG Refueling Infrastructure: Stationary and mobile refueling systems for CNG/RNG. Includes modular versions with 260,000 DGE/day capacity for Class I railroads. Provided at no direct cost to railroads, offset through RNG fuel contracts.
5. RNG Fuel Supply: Supply of Renewable Natural Gas fuel with negative carbon intensity, delivered through pipeline infrastructure along railroad rights-of-way
6. Long-term Maintenance Services: Comprehensive maintenance coverage including 6-month, annual, 10-year, and 20-year maintenance for engines, power modules and RNG storage systems

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels8 records

Core offering

OptiFuel Systems designs, engineers, and manufactures the Total-Zero modular zero-emission locomotive platform and supporting refueling infrastructure for the freight rail industry. Its product family spans switcher, road switcher, and line haul locomotives with interchangeable powertrain modules (Diesel-RNG Dual-Fuel Hybrid, Diesel-Hybrid, Hydrogen fuel cell, and Battery-Electric), supplemented by RNG-powered tenders, stationary and mobile CNG/RNG refueling systems, and a Locomotive-as-a-Service (LAAS) subscription program that bundles the locomotive, fuel, infrastructure, and maintenance for a fixed fuel price and 20% upfront payment.

Product overview

OptiFuel Systems offers a modular locomotive platform architecture called Total-Zero™ with interchangeable power modules supporting four powertrain options: Diesel-Hybrid, Diesel-RNG Dual Fuel Hybrid, Hydrogen, and Battery-Electric. The product line includes switcher locomotives (2500-3500 hp, 52' platform), road switcher locomotives (2500-3500 hp, 62' platform), and line haul locomotives in two sizes (4600 hp at 72' and 5000 hp at 80' platforms). All locomotives share standardized Quick-Power Engine Modules and Quick-Disconnect Fuel Modules that can be swapped in approximately 1 hour using a forklift. Supporting infrastructure includes RNG-powered tenders (7500-11,800 DGE capacity), stationary and mobile RNG refueling stations, and hydrogen tenders. The company also provides RNG fuel supply through production partnerships and an innovative Locomotive-as-a-Service (LAAS™) program offering locomotives, tenders, refueling infrastructure, and RNG fuel for a fixed fuel price plus upfront payment. Additional markets served include power generation (standby/emergency generators), semi-trucks, and marine vessels.

Differentiator

Problem solved

Functional benefit

Brands

• Total-Zero: Zero-emission locomotive technology brand offering Diesel-RNG Dual Fuel Hybrid, Hydrogen, and Battery-Electric powertrains.

Products and services

• Total-Zero Diesel-RNG Dual-Fuel Hybrid Locomotive family Zero-emission switcher (52' platform, 2,500-3,500 hp), road switcher (62' platform, 2,500-3,500 hp), and line haul (72' at 4,600 hp and 80' at 5,000 hp) locomotives using diesel-RNG dual-fuel hybrid technology with AC traction, modular Quick-Power engine pods, and demand-matched power delivery.
• Diesel-Hybrid Locomotive (Tier 5) Tier 5 compliant diesel-electric hybrid locomotive with built-in battery hybrid architecture delivering up to 65% lower operating costs in fuel, labor, and maintenance for 24/7 use.
• Dual Fuel Hybrid CNG/RNG Locomotive (Tier 5) Tier 5 compliant dual-fuel hybrid locomotive operating on compressed natural gas or renewable natural gas blended with diesel, achieving near-zero NOx and PM emissions plus net-zero greenhouse gas emissions when fueled with RNG.
• Battery Electric Locomotive (Tier 5) Tier 5 compliant zero direct-emission battery-electric locomotive designed for operations where full electrification is feasible, delivering zero tailpipe emissions during operation.
• Hydrogen-Powered Locomotive Zero-emission hydrogen fuel cell powered locomotive emitting only water vapor, with OptiFuel-designed fuel cell, hydrogen storage, and battery modules integrated into its modular platform.
• RNG-Powered Tenders Multi-capacity RNG-powered tenders (7,500 DGE; 10,000-11,800 DGE; and 10,600 DGE RNG / 2,600 kg hydrogen variants) that extend locomotive range, enabling two 5,600 hp line haul locomotives plus one tender to travel roughly 2,500 miles between fuel stops.
• Stationary RNG Refueling Station Fixed-installation RNG refueling infrastructure with modular design, typically adding RNG dispensers to existing diesel refueling islands and offering up to 260,000 DGE/day capacity for Class I railroad operations.
• Mobile RNG Refueling System Portable CNG/RNG refueling equipment deployable to rail yards and remote locations, with basic configuration refueling two locomotives every 15-30 minutes and growth configuration serving four locomotives.
• Locomotive-as-a-Service (LAAS) Subscription-style integrated service providing RNG-powered locomotives, tenders, refueling infrastructure, and RNG fuel for one fixed-rate fuel price plus roughly 20% upfront payment, with 30-year use coverage and full maintenance included.
• Mobile and Stationary Standby / Emergency Generators Zero-emission standby, emergency, and microgrid power generation systems using RNG or hydrogen as fuel, extending OptiFuel's modular engine technology beyond rail into industrial power markets.
• GrantPro Services Advisory service helping customers identify and apply for CRISI grants and other federal or state funding programs for locomotive modernization and zero-emission transitions.
• RNG Fuel Supply Solutions RNG production and supply partnerships providing long-term pricing and supply assurance, including circular-economy organic waste-to-biofuel processing delivered along railroad rights-of-way.

Quantifiable outcome

• Up to 65% lower operating costs (fuel, labor & maintenance)
• +8 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eleven partnerships are on record, tiered core and secondary.

• GTI EnergycoreStrategic or Co-development PartnerTechnical partner serving as formal DOE grant applicant for 5600 hp RNG Line Haul Locomotive program. GTI Energy brings energy sector expertise to the partnership.
• BAE SystemscoreTechnology or IntegrationSystems integrator providing hybrid power products for decarbonizing rail, marine, and microgrid markets. Collaboration on propulsion systems integration.
• Luxfer Gas CylinderssecondaryTechnology or IntegrationTechnical partner providing CNG/RNG storage cylinder technology for onboard locomotive fuel systems
• TMV Control Systems Inc.secondaryTechnology or IntegrationTechnical partner providing modular electronic controls for locomotive systems including controls and high-power traction system electronics
• ENSCOsecondaryTechnology or IntegrationTechnical partner supporting TTC testing and validation programs
• CAF GroupsecondaryTechnology or IntegrationTechnical partner for rail technology development and integration
• New York Air BrakesecondaryTechnology or IntegrationTechnical partner providing rail brake systems and technology integration
• Powerhouse (Marmon Rail Company)secondaryTechnology or IntegrationTechnical partner and Marmon Rail Company subsidiary supporting locomotive systems integration
• Colorado State University PueblocoreStrategic or Co-development PartnerCRISI grant award recipient for development and testing of environmentally friendly hybrid locomotives using RNG. Part of $26.2M total CRISI grants supporting OptiFuel technology development.
• University of DelawarecoreStrategic or Co-development Partner$14.5M CRISI grant recipient for rail engineering training and national rail data repository. Part of broader CRISI initiative supporting OptiFuel zero-emission locomotive testing and workforce development at TTC in Pueblo, CO.
• Sierra Northern Railway (SERA)secondaryStrategic or Co-development PartnerCustomer and development partner for hydrogen hybrid switcher locomotives. OptiFuel designed and built fuel cell, hydrogen storage, and battery modules for SERA's hydrogen-powered freight locomotive.

Scale indicators12 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Cummins: Major diesel and natural gas engine manufacturer with rail-certified power systems. Comparable to OptiFuel on the engine/powertrain layer that underpins the Total-Zero platform, including low-NOx natural gas engine technology.
• Alstom: Global rail OEM operating the Coradia iLint hydrogen train in commercial service. A relevant comparator on hydrogen propulsion commercialization and on serving rail operators seeking zero-emission fleets.
• Caterpillar: Parent of Progress Rail and a leading manufacturer of large-bore natural gas and diesel engines. Highly relevant as an engine supplier to rail and a competitor to OptiFuel's EPA-certified 0.00 g/bhp-hr natural gas engine.
• Siemens Mobility: OEM of the Siemens Charger locomotive and Mireo Plus H hydrogen/battery trains. Competes in the North American passenger and freight locomotive market with comparable low-emission platforms.

Direct peers

• Ballard Power Systems: Hydrogen fuel cell specialist supplying rail integrators (e.g., Sierra Northern Railway, CRRC). Directly comparable to OptiFuel on the hydrogen locomotive side, where OptiFuel integrates its own fuel cell and hydrogen storage modules.
• Progress Rail (Caterpillar): Caterpillar subsidiary manufacturing EMD locomotives and rail power systems. Competes with OptiFuel across switcher and line haul segments, and is pursuing its own zero-emission repower programs.
• Wabtec Corporation: Largest US freight rail OEM and Tier 4 locomotive incumbent (GE Transportation legacy). Direct competitor to OptiFuel's switcher and line haul locomotives, with deep Class I relationships and active zero-emission locomotive programs.

Others

• Luxfer Gas Cylinders: Manufacturer of high-pressure gas cylinders, including CNG/RNG Type 4 composite cylinders used in transportation. A direct technology supplier to OptiFuel's onboard RNG storage systems.
• Chart Industries: Cryogenic and high-pressure gas storage manufacturer, including CNG/RNG cylinder technology. Comparable to OptiFuel's onboard CNG storage and refueling systems, and an existing supplier to gas-powered transport markets.

Emerging players

• Stadler Rail: European rail OEM with hydrogen and battery-electric trains (FLIRT H2, RS ZERO). Comparable on the alternative-fuel locomotive product line and Class I/short-line rail target market.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/optifuelsystems
• LinkedInlinkedin.com/company/optifuel-systems
• Instagraminstagram.com/optifuelsystems

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OptiFuel Systems