Redefining the Locomotive Powertrain for the Next Era of Rail
NexGen is an engineering, systems integration, and intellectual property company pioneering the development of LNG-fueled turbine-electric power conversion systems purpose-engineered for modern and legacy railroad locomotive platforms.
At the core of NexGen’s technology is a proprietary Brayton-cycle gas turbine engine directly coupled to a high-speed Permanent Magnet Generator (PMG) — a tightly packaged, high power-density prime mover assembly that delivers clean, conditioned electrical power directly to the locomotive’s existing traction motor infrastructure.
The system interfaces with onboard cryogenic LNG storage and a precision digital fuel management system, optimized for turbine combustion efficiency across the full dynamic load spectrum of rail operations.
NexGen Gas Turbine and Generator
NexGen Rail Solution Schematic
A True Drop-In Revolution
NexGen’s architecture is engineered from the ground up as a direct, platform-agnostic replacement for the conventional diesel engine and wound-rotor alternator assembly — dimensionally matched to existing locomotive envelope constraints and fully compatible with current traction and auxiliary electrical systems.
No structural modifications. No new infrastructure. No retraining.
Just bolt-in, commission, and operate.
At the core of NexGen’s technology is a proprietary Brayton-cycle gas turbine engine directly coupled to a high-speed Permanent Magnet Generator (PMG) — a tightly packaged, high power-density prime mover assembly that delivers clean, conditioned electrical power directly to the locomotive’s existing traction motor infrastructure.
The system interfaces with onboard cryogenic LNG storage and a precision digital fuel management system, optimized for turbine combustion efficiency across the full dynamic load spectrum of rail operations.
The Performance Advantage
Metric Diesel-Electric (Incumbent) NexGen Turbine-PMG Fuel Efficiency Baseline ~40% improvement Drivetrain Mass Baseline ~60% reduction Emissions Profile High NOₓ / PM / CO₂ Significantly reduced Power Density Moderate Class-leading Moving Parts High (reciprocating) Minimal (rotary only)
| Metric | Diesel-Electric (Incumbent) | NexGen Turbine-PMG |
| Fuel Efficiency | Baseline | ~40% improvement |
| Drivetrain Mass | Baseline | ~60% reduction |
| Emissions Profile | High NOₓ / PM / CO₂ | Significantly reduced |
| Power Density | Moderate | Class-leading |
| Moving Parts | High (reciprocating) | Minimal (rotary only) |
- The ~40% fuel savings stem from the superior thermal efficiency of the turbine-PMG power cycle relative to reciprocating diesel combustion.
- The ~60% reduction in drivetrain mass is achieved by eliminating the diesel block, crankshaft assembly, and conventional alternator — replacing them with a compact, high-speed rotary assembly with a fraction of the component count.
Proprietary IP at Every Layer
NexGen’s intellectual property portfolio spans the full system stack:
- Turbine-PMG mechanical coupling and co-axial geometry
- Cryogenic LNG fuel delivery and thermal management architecture
- Digital combustion and load-following control firmware
- Battery Storage inside the locomotive (4.4 MWh to 7.7MWh)
- 600kW Variable Frequency Drive generating capacity per wheel
This layered IP position creates durable competitive moats across engineering, licensing, and long-term service and maintenance revenue streams.
NexGen — Engineering the future of rail, one locomotive at a time.
Advantages
