CYGNUS® 1 >Connect to diesel gensets <15 kVA

Product Overview

The ‘All New’ Cygnus® 1 is the most compact model in the Cygnus® range, manufactured to a robust rental specification.

Available with LFP or AGM storage technologies providing up to 8 kWh of energy storage. Cygnus® 1 is ideally suited for use with diesel generators of up to 15 kVA, managing load spikes of up to 2.8 kVA without triggering auto start of the diesel generator.

Cygnus® 1 delivers truly silent power, without interruption to the surrounding environment; mitigating noise disturbance to local wildlife and neighbouring building occupants. Providing silent emission-free power, up to 250 tonnes of CO2 emissions potentially can be saved over the product lifetime of Cygnus® 1.

Unique to the Cygnus® 1 is the Hybrid LED eTowerlight option that transforms this hybrid power system into a highly efficient, silent lighting solution that can also deliver AC power.

As with all Firefly hybrid power systems, Cygnus® 2 works seamlessly with GLOW RFM® cloud platform to allow control, diagnostics and reporting from anywhere in the world.

Applications and Benefits


Whilst connected to a diesel generator, Cygnus® 1 provides base load management, reducing the runtime of the diesel generator. As a result, noise, CO2, NOx and PM are significantly reduced. Over the product lifetime of Cygnus® 1, up to 250 tonnes of CO2 emissions potentially can be saved.

In addition, the frequency of servicing the diesel generator is reduced, whilst also providing back-up power in the event of generator breakdown.


Cygnus® 1 can be specified at point of purchase with Firefly’s Solar-Pack™, which allows Cygnus® 1 to operate in stand-alone mode using the Solar PV arrays supplied as the primary power support. Providing a truly silent 24 hour operation with zero emissions.

Optionally a diesel generator can also be connected as a back-up power source.


Cygnus® 1 applications are not limited to, but include silent power for:

  • Security lighting
  • CCTV
  • IT equipment
  • Monitoring equipment

Learn more about the applications and benefits for your sector by following the links below.

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  • Variable RCD earth fault protection
  • MCB over current protection
  • Limit Switch cuts power if access door is opened
  • Emergency Stop 
  • Lockable Service Door


  • 32 A CEE Form and Busbar Wiring Options
  • Binding Posts for Remote Generator Start/Stop


  • Digital Timer
  • Forklift Pockets and Lift & Drag Skid
  • Compact Design


  • Built to ISO:9001 Quality Management System
  • Premium Quality Components
  • Rental Specification
  • IP55 Rated Toughened 2mm Zintec Steel Canopy



Cygnus® 1 is available in two configuration options:

  • LFP (Lithium Iron Phosphate)
    Storage with 8 kWh and 4 kVA power output.
  • AGM (Absorbent Glass Mat)
    Storage with 6 kWh and 3.5 kVA power output.

Learn more about our storage technologies and which one is right for you here.

Technical Downloads

Hire / Purchase

Cygnus® 1 can be hired from our extensive partner network across Europe. Click here to find a hire partner. Hire today – click here

Alternatively Cygnus® 1 can be purchased directly from the manufacturer, give us a call or drop us a line using the details below:

[email protected] +44 (0)800 091 4090

All Cygnus® models are sold with a comprehensive 5-year Firefly warranty as standard, view our warranty page for further information.


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