Standby Generators Designed For Critical Power Continuity
Riello UPS provides a comprehensive range of standby diesel generators designed to deliver resilient, long-duration backup power for mission-critical environments.
From healthcare and manufacturing to telecoms and data centres, our generator solutions help organisations maintain operational continuity when mains power fails.
Available in ratings from 8 kVA to 2.5 MVA, our standby generators integrate seamlessly with UPS systems to provide complete power protection for critical infrastructure.
Through our partner factories, we have supply agreements with most major engine and alternator manufacturers, giving you a widespread choice of brands including:

Key Benefits:
- Single-phase and three-phase generator solutions
- Open frame, canopied, and bespoke configurations
- Nationwide maintenance and emergency support
- Generator servicing, testing, and fuel management
- Seamless UPS and generator integration
- Tailored solutions for critical applications
Request A Generator Consultation
Flexible and cost-effective standby power solutions designed for dedicated generator rooms and controlled environments. Allows for easy maintenance access.
Weather-protected, low-noise ‘drop & go’ solutions designed for external installation and noise-sensitive environments. Environmental protection and rapid, convenient deployment.
Custom-engineered generators tailored to your site and resilience strategy. Options including extended autonomy fuel tanks, exhaust flue installation, and mains synchronising controllers.
Generator MAINTENANCE, SERVICING & TESTING
We also offer Generator Maintenance plans along with a wide range of Generator Servicing and Testing to ensure your gen sets always perform at their best.
Generator Maintenance Plans You Can Rely On
Our generator maintenance agreements are tailored to your needs:
- 24/7/365 emergency callout
- Choice of 4 clock or 8 working hours emergency response times
- PMVs with consumable and fluid top-ups
- Bespoke options (load bank testing, out of hours maintenance visits, and remote monitoring).
Generator Health Checks & Servicing
Make sure your gensets are in prime condition with our specialist generator health checks by a certified engineer:
- Thorough inspection of your entire setup
- Check all components and connections
- Visual, physical, electrical, and mechanical tests
- Recommended remedial actions.
Comprehensive Generator Testing & Additional Services
All the rigorous testing and supplementary services you’ll need to maximise your generators’ service life:
- Load bank testing
- Fuel polishing
- Fuel sampling
- Generator refuelling contracts
- Generator refurbishment service.