GenCell REX™ – Fuel Cell Backup Power Generator

by GenCell Energy

  • Immediate injection of 5kW power with high efficiency & unlimited run-time
  • Energy bridge for instant electrical power generation and regulating power output
  • GenCell REX™ fuel cell backup power generator is highly resilient to extreme environmental conditions
  • Designed to fit outdoor installations
  • Simple annual maintenance
  • Zero CO2 emissions, no noise, no vibrations
  • Designed to connect with standard Energy Management System protocols
  • Easy plug-and-play installation
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GenCell REX™ – Fuel Cell Backup Power Generator

  • Powered by hydrogen, the GenCell REX fuel cell backup power generator produces 5kW of emissions-free electricity for substations during power outages.
  • Operating as a direct source of power or supplementing legacy backup battery systems that provide only 6-8 hours of electricity, the GenCell REX keeps circuit breaker auto-reclosers operational until the grid recovers.
  • The solution alleviates the need for costly multiple battery rooms, avoids the pollution and maintenance costs of diesel and includes a shelter that is resistant to high-voltage interference and earthquakes.
  • The GenCell REX is an enhanced version of the GenCell G5rx solution, available in three configurations – 130VDC, 48 VDC and dual 130/48 VDC output in a single unit to support both substation loads and communications systems.
  • The GenCell REX also offers enhanced integration with leading utility SCAD systems and improved remote monitoring and control software.


  • Heat utilization unit for dissipating excess heat
  • Energy bridge for instant electrical power generation and regulating power output
  • Fuel supply comprised of standard hydrogen cylinders
  • Shelter enclosure to protect all system components

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Key features

  • Multi output voltages dependent on requirements (-48 VDC / +48 VDC / 230 VAC / 130 VDC)
  • Fuel consumption ≤ 70 g of 99.5% grade H2 /kWh
  • Remote IoT manager available
  • Remote start and shutdown available
  • User interface local and web interface
  • Alarm/Event monitoring & reporting system local alarm with Email or SMS

Application areas

  • Utilities substations
  • Critical telecommunication applications
  • Base stations
  • Cellular networks
  • Border control stations
  • Surveillance operational support
  • Remote EV charging
  • Oil & Gas
  • Off grid remote rail crossing security
  • Hybrid power backup for RES + Batteries

Project cases

  • Carbon free energy production for mobile sites with leading telecommunication company

Contact us

  • We are happy to know our customers. Contact us today and tell us about your requirements.
Dimensions280 × 225 × 250 cm
Type of Fuel Cell


Max Power (in kW)

Max Ambient Temperature (in °C)

Min Ambient Temperature (in °C)

Max Ambient Humidity (in % r.H.)

Technology Readiness (TRL)

Manufacturing Readiness (MRL)

Compliant with

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GenCell REX™ - Fuel Cell Backup Power Generator Datasheet

Product datasheet

Gencell Remote Manager brochure

Remote manager

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      GenCell Energy

      GenCell Energy fuel cell solutions offer affordable, clean power for humanity, enabling businesses to render diesel generators obsolete. Using ultra-reliable fuel cell technology, we deliver backup power for telecom, utilities, homeland security, healthcare and automated industries. Our revolutionary process to create hydrogen-on-demand from anhydrous ammonia (NH3) enables our fuel cell solutions to also provide primary power for off-grid and poor-grid sites, as well as rural electrification. The company is headquartered in Israel with a worldwide distribution and support network.

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