Watermeln Technology
Clean energy, worry-free
Our solutions
Generators
250 kVA & scalable
H2 containers
Up to 12 MWh per delivery
H2 bundles
35 kg & scalable
DC fast charger
Up to 240 kW fast chargers
Accessoires
Power distribution boxes, Cables, Construction fences, ATEX signage
AC & DC accupack
Mobile battery packs
We provide green energy anywhere, anytime. The Watermeln hydrogen generator solution consists of two components: the WM-200 unit and external hydrogen tanks.
Intelligent battery & fuel cell combination
The Watermeln 200 is an innovative genset that works on the basis of chemical reactions, meaning no combustion takes place. The fuel cell converts hydrogen into electricity and heat through a chemical process, while the battery provides peak power delivery and ensures an optimal balance between supply and demand.
Our hydrogen tanks store hydrogen gas at high pressure, allowing a much larger volume of gas to fit in one cubic metre. The hydrogen is produced by splitting water into oxygen and hydrogen using electricity sourced from regional renewable energy sources such as wind or solar.
This way, we not only achieve emission-free power on-site but also ensure the entire chain is sustainable and emission-free.
The advantages of Watermeln
High uptime
- High electrical reliability
- Guaranteed certainty with All-in Hydrogen Service
- Uninterrupted 24/7 power
Scalable
- Scale up to 1MW
- Modular design
Online monitoring
- Remote monitoring 24/7
- Control from any device
- Smart ML & AI intergration
WM-200
The mobile hydrogen generator based on fuel cell and battery technology. The unit can operate in 3 operational modes: stand-alone off-grid, grid-connected, or with an additional battery for peak load.
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Power
- Peak 350 kW AC
- Battery: 200 kW AC (rated power)
- Fuel cell: 70 kW AC (rated power)
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Capacity
- Battery: 120 kWh
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Output
- 2x Powerlock 360A
- 2x 125A 5p
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Input
- Hydrogen 5.0 quality
- Input: 30-35 bar (quick connect), minimum input 20 bar
- Grid-connected: 22 kW 63A 5P
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Operational temperature
- -15 tot 45 graden °C
- (active conditioning)
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Weight and dimensions
- 4500 kg
- 2,99 x 2,44 x 2,59 meter (10ft container)
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Gas Control (External)
- HP connector: Staubli RBL06 of ISO 5145 No. 38 W30 2x LH
- Input: max 450 bar working pressure
- Output: 30-35 bar (Quick connect)
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Certification
- ADR transport (class-9)
- CE certification (NEN-EN-ISO 12100:2010)
- NEN-EN 13854:2019, NEN-EN-IEC 60204
- PED 2014/68/EU SEP art. 4.3
- Explosion safety documentation (ESD ATEX)
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Monitoring & control
- GPS & 4G online monitoring and commando's 7 inch control and monitoring touchscreen
Hydrogen tanks
Each Watermeln unit comes standard with one or multiple hydrogen tanks.
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Hydrogen type
- Green hydrogen (from electrolysis)
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Energy content
- 14.6 MWh (max)
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Usable electrical energy
- 6.1 MWhe (avg)
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Maximum pressure
- 350 bar
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Maximum capacity
- 440 kg H2
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Usable capacity
- 415 kg H2
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Dimensions
- 6,06 x 2,44 x 2,89 meter (20ft container; ex trailer)
- 9,00 x 2,44 x 3,99 meter (20ft container; incl trailer)
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Certification
- EN 12245 / ADR / TPED
CUBE-Bundle
500 kWh, in the size of a fridge
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Hydrogen type
- Green hydrogen (from electrolysis)
- Type 4 cillinders
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Services
- Transport
- Connecting & disconnecting
- Back-up storage
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e-Capacity per load
- >500 kWh (450 bar)
- >420 kWh (350 bar)
- >360 kWh (300 bar)
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Working pressure (15 °C)
- 450 bar (maximum)
- 350 bar
- 300 bar
- 20 bar (minimum)
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Maximum capacity (15 °C)
- 35,1 kg (450 bar)
- 28.9 kg (350 bar)
- 25,5 kg (300 bar)
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Usable capacity (15 °C)
- 32,9 kg (450 bar)
- 27,6 kg (350 bar)
- 24 kg (300 bar)
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Demensions
- 1,20 x 1,20 x 2,55 meter
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Weight
- <2.000 kg
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Certifications
- ADR / TPED 2010/35/EU / ISO 10961
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Site Requirements
- Distance to buildings (< 4m height): > 5 meters
- Distance to buildings (> 4m height): > 10 meters
- Distance to flammable objects (e.g., batteries): > 5 meters
- Surface: Paved ground or steel road plates
- Usage: Outdoor use only (not covered/indoors)
- Access: Clear access route for hydrogen exchange/swap
- ATEX Zone: 1.7 meters around the hydrogen unit
- Additional Information: Please refer to the Watermeln documentation for environmental authorities (Omgevingsdiensten).
High in power
By intelligently combining Li-ion batteries and fuel cells, we can provide similar high power levels for both short and long durations, just like a conventional diesel generator. This ensures a reliable source of powerful, emission-free electricity.
Large in capacity
Green hydrogen, the energy carrier of the future, offers up to 10 times more energy per m3 than batteries. Thanks to our quickfill system, up to 7 MWh is available within 10 minutes. This is essential for energy-intensive projects or limited spaces.
100% green
A reality where emission-free construction and festivities are not a pipe dream? We enabled it. Together, we're working towards a future where sustainable power is the norm, free from CO2, nitrogen, or particulate emissions. This way, we contribute to a clean world and a healthy environment. Oh, and by the way, we also have pure drinking water left over that we can reuse.
Mobile plug & play
Our Watermeln 200 technology is integrated into a standard 10-foot container. Thanks to standardised dimensions and lifting points, they can be easily loaded onto trucks, ships, and trains, ensuring efficient and flexible global transport. Connecting to hydrogen and the user is a quick and straightforward process.
Peace of mind
At Watermeln, peace of mind is our priority. Our service not only includes the delivery of clean energy, but the full package: transport, expert installation, precise monitoring, and the necessary hydrogen supply. We take care of everything, providing sustainable energy solutions that perfectly match your needs.
Online monitoring
Our IoT capabilities unlock a world of benefits. Thanks to sensors and connections, the system can gather real-time data about fuel levels, performance, and maintenance needs. This enables proactive maintenance, minimises downtime, and optimises efficiency. As a customer, you also gain access to crucial data and insights, ensuring you're always well-informed.
More information
Silent
The Watermeln units offer significant advantages over diesel generators, primarily due to their silence. While diesel generators are often noisy and cause disturbances, our system operates virtually silently. This makes them ideal for use in residential areas and other locations where noise reduction is essential. This contributes to a more environmentally friendly and tranquil living environment without compromising on power supply.
But how does it actually work?
Hydrogen gas (H2) is a promising and environmentally friendly energy carrier with various applications, including vehicle fuel, electricity storage, and industrial processes. One of the most commonly used methods to produce hydrogen is electrolysis, followed by high-pressure storage. Take a look on our hydrogen roadmap page:
More information
Book your Watermeln generator now
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