As industries demand more efficient and resilient energy solutions, the Range-Extended Energy Storage System (REESS) is emerging as a revolutionary approach. By combining advanced battery storage with an auxiliary power generation unit, it delivers longer operation, greater flexibility, and lower costs compared to traditional energy systems.
At INJET New Energy, we design range-extended hybrid energy solutions that maximize uptime, reduce fuel dependence, and ensure reliable power for off-grid, mobile, and industrial applications.
A Range-Extended Energy Storage System (REESS) is an advanced form of Hybrid Energy Storage System (HESS) that includes a battery pack and an onboard generator or engine—known as a “range extender.”
When the battery’s energy is depleted, the range extender automatically activates to recharge it, ensuring continuous operation without external charging. This design enables long-duration, self-sustaining power even in remote or unstable environments.
Core Components:
High-capacity lithium or LFP battery module
Smart inverter and power conversion unit
Range extender (diesel, natural gas, or hydrogen generator)
Energy Management System (EMS) for intelligent control
This hybrid configuration combines the zero-emission performance of batteries with the endurance of engine-generated power, creating a seamless balance between sustainability and reliability.
Primary Power:
The system initially runs on stored battery energy to supply power quietly and efficiently.
Automatic Extension:
When battery levels fall below a threshold, the range extender starts automatically, recharging the battery while maintaining output to loads.
Energy Optimization:
The EMS manages when to charge or discharge the battery, ensuring maximum energy efficiency and minimal fuel consumption.
Continuous Operation:
Once battery capacity is restored, the range extender shuts down, and the system returns to silent, zero-emission battery mode.
This dynamic cycle delivers long-duration, uninterrupted power while keeping fuel costs and emissions low.
Unlike battery-only systems that require external recharging, range-extended systems can operate continuously for days or weeks, depending on fuel availability.
By using the engine only when needed, the REESS achieves 30–60% fuel reduction compared to diesel-only systems, lowering both operating and maintenance costs.
Batteries handle most of the load, allowing the generator to run at peak efficiency — significantly cutting CO₂ and NOₓ emissions.
In remote or unstable grid locations, the range extender ensures energy security even during battery depletion or adverse weather.
Battery operation provides quiet, emission-free power, ideal for urban sites, events, and low-noise zones, while the generator operates intermittently.
INJET’s Range-Extended Energy Storage Systems are ideal for:
Construction site power (temporary or mobile)
Telecom towers and remote communication facilities
Mobile charging stations for EV fleets
Emergency backup and disaster relief operations
Mining and off-grid industrial projects
Maritime and transport energy support
Each system can be customized to balance battery capacity, engine power, and energy autonomy based on client needs.
| Feature | Specification |
|---|---|
| Battery Type | Lithium Iron Phosphate (LFP) |
| Battery Capacity | 50 kWh – 2 MWh |
| Range Extender | Diesel / Gas / Hydrogen engine |
| Power Output Range | 30 kVA – 1000 kVA |
| Control System | Smart EMS with load forecasting |
| Design | Modular, containerized, plug-and-play |
| Deployment | Fast installation, mobile-ready |
INJET’s system architecture allows quick scalability and easy integration with renewable energy sources like solar PV and wind turbines, creating a hybrid clean power ecosystem.
A 2025 INJET client case in the mining sector showed:
Fuel savings: 48% compared to diesel-only power
CO₂ emissions reduction: 46%
ROI achieved: within 18 months
Continuous runtime: over 1,000 hours with no grid connection
This demonstrates that REESS is not only a cost-saving power solution but also a sustainable energy strategy for forward-thinking industries.
As one of China’s most innovative energy storage solution providers, INJET New Energy delivers integrated hybrid and range-extended systems trusted worldwide.
15+ years of energy technology experience
Proven hybrid and range-extended deployments in multiple sectors
In-house R&D for customized hybrid architectures
Intelligent control and monitoring systems for maximum ROI
The Range-Extended Energy Storage System represents the next evolution in energy technology — combining clean battery storage with intelligent range extension for unmatched performance and endurance.
With INJET New Energy, you gain a smarter, longer-lasting, and more efficient power solution that meets the energy demands of modern industry while minimizing operational costs and environmental impact.
Contact INJET New Energy
Tel: +86-18980902801
Email: info@injet.com