From Diesel Generators to Clean Energy: How a 40kWh Battery is Powering a Mining Office in Cameroon
A few weeks ago, I received a message from an old friend, Mr. Sun, in Cameroon, West Africa. He had recently launched a new mining company headquarters in Yaoundé, the capital city. Amidst the excitement of building a team and setting up operations, he ran into a very familiar challenge: the airport area experienced frequent power outages, sometimes without warning.
Like many others in the region, they relied on diesel generators as backup. But the constant noise, fumes, and fuel logistics were wearing them down. Frustrated, he said to me:
“Can you help me find a large power bank? Something clean and quiet—just not another diesel generator.”
He was, of course, referring to a battery energy storage system(BESS). And after reviewing his needs, my recommendation was clear: the HighJoule HJ-Z24-40I 40kWh battery system.
Why the HJ-Z24-40I Battery Is a Game-Changer
The HJ-Z24-40I is a 40kWh floor-mounted energy storage battery with up to 48kW of peak output, specifically designed for high-demand use cases like his. It supports power input from solar panels, grid electricity, or both, offering flexibility and energy independence in one complete solution.
| Specification | Details |
|---|---|
| Model | HJ-Z24-40I |
| Storage Capacity | 40kWh |
| Output Power | 24kW (Max 48kW) |
| Input/Output | Grid / Solar PV / Battery Hybrid |
| Installation | Indoor (Outdoor versions available) |
| Cooling | Air Cooling / Liquid Cooling (optional) |
| Dimensions | 2000mm × 1550mm × 800mm |
For Commercial Use: Quiet, Reliable Office Power
In my friend’s case, the mining office occupies roughly 150–180m², with around 10–15 staff, using:
- Computers and network devices
- Office lighting
- Air conditioning units
- Printers and communication systems
The 40kWh battery provides stable power for essential operations and can seamlessly replace diesel generators, all while:
- Eliminating generator noise
- Cutting out fuel and maintenance costs
- Supporting clean energy from rooftop solar
The system also offers instant switching during outages, keeping operations online and uninterrupted.
For Residential Use: Ideal for 4–6 BHK Homes
This same system is a perfect fit for large homes—4 to 6 BHK villas or townhouses—especially in off-grid or unstable grid areas. It supports:
- Multiple air conditioners
- Kitchen appliances
- Entertainment systems
- Smart home automation
Combined with solar panels, the 40kWh battery can keep a household running efficiently throughout the day and night.
For Remote or Outdoor Applications
The outdoor-customized version of this system is ideal for:
- Mining camps
- Telecom base stations
- Construction sites
- Emergency response centers
With optional liquid cooling and industrial-grade enclosures, it delivers quiet, weather-resistant performance in tough environments—just like those in West Africa.
40 kWh Commercial Battery System
Pricing & Global Support
Depending on configuration, cooling system, and shipping location, the estimated cost ranges from $9,500 to $15,000.
HighJoule serves clients across the USA, UK, Africa, and Europe, with engineering support, installation guidance, and after-sales service.
We also offer a full range of battery options:
| Model | Capacity | Output |
|---|---|---|
| HJ-Z06-10I | 10kWh | 6kW (Max 9kW) |
| HJ-Z12-20I | 20kWh | 12kW (Max 24kW) |
| HJ-Z18-30I | 30kWh | 18kW (Max 36kW) |
| HJ-Z24-40I | 40kWh | 24kW (Max 48kW) |
| Custom | 10–50kWh | Air / Liquid Cooling |
Final Thoughts
For my friend in Cameroon, switching from diesel to a battery system wasn’t just about convenience—it was a long-term investment in sustainability and peace of mind.
If you’re facing similar challenges—unreliable grids, high fuel costs, or loud generators—it may be time to consider a modern energy storage system.
Contact HighJoule today for a tailored quote or to explore your options.
HighJoule – Smart Energy for a Cleaner, Quieter Future.
