Powering the energy transition in SE London

The Solar Roller

!!***!! SEEKING a responsible, motivated person to drive the Solar Roller around to outdoor events in the summer months. We pay £125 per day, plus expenses. You need to have your own car with a towbar and a clean driving license and basic electrician skills to set up the panels and help event managers use the equipment. We currently have six weekend events booked over the summer, dates on application. Email giovanna@selce.org.uk for more info or to to express interest. !!***!!

Hire our portable solar-powered sound system for your community event, music festivals or outdoor party


  • No carbon emissions
  • No noise
  • No fuel costs
  • Operational in a few minutes
  • Up to 8 hours run time in the absence of sunlight (due to 4*Rolls batteries 4000 Series S605 with effective battery capacity 5kWh)
  • Provides power for lights, sound systems, bouncy castles, small wedding tents, music stages.

Technical details:
Solar generation (on 50A circuit breaker)

  • 6 x Shanghai Electric 175W panels, total array capacity of 1050W
  • Connected via a Victron 100-50 Bluesolar MPPT charge controller
  • Able to deliver approx 40A charging current at peak power generation

Discharge time with the following continuous loads; 50% D.o.D.
500W (20A) 11 hours | 1000W (40A) 4.5 hours | 1500W (60A) 2.5 hours | 2000W (80A) 1.5 hours

  • Solar Input: 1050W
  • Effective Battery Capacity: 7.5kWh
  • 4 x Rolls 4000 Series S605
  • Battery bank nominal voltage: 24V
  • Battery bank capacity: 450Ah (20 hour discharge)
  • 3kVA Pure Sine Wave Primary Inverter
  • 350VA Pure Sine Wave Secondary Inverter

Useful extras:

  • Solar input and power output data is uploaded to an online portal in real time, allowing monitoring of the trailer’s performance via phone or computer
  • An LCD control interface displays all system activity and performance using an easy-to-use visual display.

Please book early

Demand for the Solar Roller is high in the summer months