EnergyPack P300

Your Industrial-Grade Energy Heart.

EnergyPack P300
Mid-Scale Hybrid BESS for Maximum ROI and Real-World Power Loads

 
 
 

EnergyPack P300 is a mid-scale industrial mobile hybrid BESS designed to deliver the best balance between power capability, cost efficiency, and deployment flexibility.
It is engineered for construction sites, equipment rental fleets, mining operations, and microgrids where variable loads, high inrush currents, and fuel costs are the real challenges.

 

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Hybrid BESS P300

Why EnergyPack P300

The Smart Alternative to Oversized Power Systems

Many projects default to larger battery systems than they actually need.
EnergyPack P300 is built for sites that demand strong power performance and fast ROI, without the size, weight, and capital cost of large-scale systems.

For most mid-scale applications, P300 delivers everything required — and nothing wasted.

Lower total cost of ownership

More Power Value, Less Energy Waste. With 340 kVA rated power and intelligent hybrid operation, EnergyPack P300 cuts fuel use and generator runtime—delivering lower total energy cost without paying for unused battery capacity.

Faster Payback with Right-Sized Capacity

The Sweet Spot Between Power and Energy. Featuring 339 kWh capacity and up to 625 kVA peak power, P300 handles real industrial loads while avoiding the cost and complexity of oversized systems.

Compact, Transport-Ready Design

Built to Move, Built to Work. With a compact footprint and ~7,500 kg weight, EnergyPack P300 is easy to transport, fast to deploy, and ideal for projects that move as fast as you do.

Engineered for Real Industrial Loads

Handles Spikes, Not Just Steady Loads Designed for cranes, pumps, and heavy equipment, P300 supports 3–5× inrush currents and absorbs load spikes where conventional battery systems fall short.

P300 Key Specs

Technical Specifications

Rated Power 340 kVA
Battery Capacity 339 kWh (305 usable)
Peak Power 625 kVA (10s)
Grid / Off-Grid Switching <20 ms
Dimensions (L×W×H) 2438 × 2185 × 2438 mm
Weight ~7,500 kg
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Optimised Economics for Mid-Scale Projects

Maximum ROI Without Oversizing

EnergyPack P300 is positioned as the ROI-optimised workhorse of the EnergyPack P Series, designed to deliver maximum economic value without unnecessary capacity.

If your project does not require continuous high-capacity output, P300 is often the most economically rational choice for fuel-saving, peak-shaving, and hybrid power applications.

Lower Initial Investment

Right-sized capacity avoids overpaying for unused energy storage.

Reduced Logistics & Installation Costs

Compact size and lower weight simplify transport and site deployment.

Higher Utilisation for Rental Fleets

One system fits more projects, increasing fleet usage and return.

Faster ROI in Fuel-Saving Applications

Optimised for peak shaving and hybrid operation with rapid payback.

How It Works

Intelligent Hybrid Power with FoxMind™ EMS

 

Business-Goal-Driven Energy Management

At the core of the P300 is FoxMind™ Intelligent Energy Management System, designed to simplify complex power systems into clear, outcome-based operation.

 

One-Click Business Modes

UL 9540A certified BESS

Stop Wasting Fuel on Low Loads

 

Generators are inefficient at low loads. FoxMind™ runs the genset only at its peak efficiency point to charge the batteries, then shuts it down.

Eliminates "wet-stacking" and carbon buildup

Reduces O&M intervals by 50%+

Ensures quiet nights with "Silent Mode" scheduling

BESS TCO analysis

Turn Intermittent Solar into Stable Power

 
 

Connect PV arrays directly to the EnergyPack M600. FoxMind™ buffers solar fluctuations, stores excess energy, and prioritizes clean power usage before starting the generator.

Maximize renewable energy penetration.

Smooth voltage dips caused by cloud cover

BESS for dewatering pumps

Always-On Reliability

 

Functioning as a robust UPS, the M600 detects power loss and takes over in less than 20ms.

Protects servers, control rooms, and labs

Clean, Pure Sine Wave output for sensitive electronics.

A Scalable Microgrid Building Block

 

We give you the tools for unified control, protecting your investment.

Open Platform & Integration

We provide standard protocols (RESTful API, Modbus-TCP) to integrate the P300 directly into your existing rental fleet management software.  
 
 

Standard Protocols

Natively supports protocols such as Modbus-TCP, MQTT, and CAN for easy integration into industrial field networks.   
 
 

FoxCloud™ Remote Management

Provides powerful remote monitoring, data analytics, fault diagnostics, and Firmware Over-The-Air (FOTA) upgrade services to ensure your assets are always operating at peak performance.

Extensive Genset Compatibility

Regardless of your diesel generator specifications—from small single units to large paralleled groups—the P300 can be quickly integrated via preset control modes for plug-and-play collaboration.

Typical Application Scenarios

Construction Site Offices

HVAC, lighting, and IT systems running 24/7 Provide clean, silent power for urban infrastructure projects

Utility & Microgrids

Stabilize local grids and integrate renewable energy (PV/Wind)

Event & Entertainment

Deliver high-capacity power for large-scale festivals without noise or emissions.

Mining & Remote Industry

Replace or supplement diesel generators in off-grid locations.

Field Hospitals & Clinics

Reliable, quiet power for sensitive environments.

P-Series Energy Storage System – Comparison Table

EnergyPack P Series - Industrial Mobile Hybrid BESS | Foxtheon

EnergyPack—P Series

Industrial Mobile Hybrid BESS

P150
Foxtheon EnergyPack P150 Mobile BESS

Power & Energy

  • Rated Power170kVA
  • Peak Power400kVA (10s)
  • Energy169kWh

Application

  • Best ForMOBILE EVCHARCING SITEOFFICES EMERGENCYREPAIR
  • EnclosureMobile trailer / skid
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P300
foxtheon-hybrid-bess-energypack-P300

Power & Energy

  • Rated Power340kVA
  • Peak Power625kVA (10s)
  • Energy339kWh

Application

  • Best ForMID-SIZECRANES TEMPORARYPROJECTS OUTDOOREVENTS
  • EnclosureISO 8-ft container
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P500 / 500+
Foxtheon EnergyPack P500 Plus BESS

Power & Energy

  • Rated Power500 / 540kVA
  • Peak Power750 / 810kVA (10s)
  • Energy509 / 679kWh

Application

  • Best ForLarge sites MINING QUARRYING HEAVY MACHINERY GRIDSUPPORT
  • EnclosureISO 10-ft container
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P600
Foxtheon EnergyPack P600 Industrial BESS

Power & Energy

  • Rated Power675kVA
  • Peak Power1000kVA (10s)
  • Energy679kWh

Application

  • Best ForIndustrial hubs, Large events
  • EnclosureISO 10-ft container
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P300 Key Specs

Nominal Rated Power (kVA)
340
Rated Voltage
400 VAC (Multi-voltage configurable)
Nominal Peak Power (10s) (kVA)
625
Cell chemistry
LiFePO4
Nominal capacity (kWh)
339 kWh
Frequency
50 / 60 Hz
Operating Temperature
-20 to +50 °C
Power Factor Range
0 ind. …1 … 0 cap
System round trip efficiency (%)
up to 92.2%
AC Connection
3-Phase 4-Wire + PE
Battery management system
Automotive grade BMS
Download
Temperature control
Liquid cooling / PI heating film

Ready to Build a Cleaner, quieter, More Efficient Site?

 

Get a custom simulation of your potential fuel savings today.

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Frequently Asked Questions

Is EnergyPack P300 powerful enough for construction and industrial sites?
Yes. With 340 kVA rated power and up to 625 kVA peak power, EnergyPack P300 is designed to handle high inrush loads from cranes, pumps, and other industrial equipment commonly used on construction and industrial sites.
How does EnergyPack P300 compare to larger systems like P500?
P300 is optimised for mid-scale projects where return on investment and flexibility matter more than continuous high-capacity output. Compared to larger systems, it offers lower upfront cost, easier transport, and faster payback.
Can EnergyPack P300 work with diesel generators?
Yes. EnergyPack P300 is designed for hybrid operation with diesel generators, enabling generator downsizing, reduced runtime, and significant fuel savings through intelligent power management.

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