From aquariums and airports to hospitals, schools and beyond, here’s how to keep critical infrastructure running during a grid power failure.
Power outages don’t always come with a warning. For high-dependency sites like healthcare facilities, data centres, airports and public venues, even a few seconds of downtime can lead to system failures, revenue loss, reputational damage – or worse, risk to life.
Having a backup generator simply isn’t enough.
In today’s energy landscape, true resilience means more than diesel alone. That’s why increasing numbers of businesses are now seeking integrated emergency backup power systems that ensure uninterrupted performance across essential services such as lighting, medical equipment, IT infrastructure, life safety systems and more.
This guide explores the most reliable backup power options for commercial and public sites and how Powerguard systems are already protecting critical operations.
Why generators alone aren’t a long-term solution
On January 24, 2025, during Storm Éowyn, Forth Valley Royal Hospital in Scotland experienced a 70-minute power outage. Despite having backup generators, a significant power surge caused both the mains and generator supplies to trip, leaving critical systems without power.
Just two months later, on March 21, 2025, a fire at the North Hyde electrical substation led to a massive power outage at Heathrow Airport. The incident resulted in the cancellation of over 1,300 flights and affected nearly 300,000 passengers. The airport’s backup systems failed to compensate for the loss, exposing vulnerabilities in relying solely on traditional generators.
Both incidents exposed a harsh truth: relying on generators alone isn’t enough.
Here’s why:
- Delayed Startup: Generators often take time to initiate, leaving vital systems unprotected in the interim.
- Mechanical Failure: Without rigorous maintenance, they can fail at the exact moment they’re needed.
- Fuel Dependency: Prolonged outages can run reserves dry, while refuelling delays or supply chain issues can make matters worse.
- Environmental Compliance: Noise and emissions from diesel units pose challenges, especially in sensitive settings like hospitals or schools.
In today’s world, backup systems need to be smarter, cleaner and fully integrated.
What are your emergency power options?
When the lights go out, every second counts. And for many commercial or public sector sites, having a basic generator just doesn’t cut it anymore. That’s why more businesses are looking at multi-layered, integrated backup systems that go beyond ‘just enough’ and deliver guaranteed continuity.
Here’s a breakdown of the most effective emergency power solutions available today and how Powerguard supports each one.
Central Battery Systems for Emergency Lighting
Used extensively in hospitals, airports, universities and other public infrastructure, Central Battery Systems (CBS) provide dedicated emergency lighting that activates instantly during a power outage.
Powerguard’s CBS solutions are:
- Fully compliant with BS EN 50171
- Engineered for immediate activation, with zero flicker
- Designed for centralised monitoring and diagnostics
- Lower maintenance than individual emergency light fittings
Ideal for: Escape routes, stairwells, signage and legally mandated emergency lighting setups.
Explore Powerguard’s Central Battery System →
Static Inverter Systems
Static inverter systems ensure uninterrupted lighting by delivering AC power from battery reserves during an outage, with no transfer delay and absolutely silent operation.
Powerguard’s systems:
- Guarantee flicker-free lighting
- Offer runtime from 1 to 3 hours, depending on configuration
- Integrate seamlessly with fire alarms and lighting circuits
- Require no moving parts, making them ultra-reliable and quiet
Ideal for: Mission-critical spaces like operating theatres, evacuation routes and control centres where zero disruption is vital.
Discover More About Static Inverter Systems
Uninterruptible Power Supply (UPS) Systems
Uninterruptible Power Supply (UPS) Systems act as the bridge between a power failure and generator startup, delivering continuous, clean power to sensitive equipment without even a flicker.
Powerguard UPS systems:
- Provide instant failover with no power dip
- Support critical loads like MRI machines, broadcast servers and marine life support tanks
- Offer short-term power autonomy (seconds to minutes) while generators or secondary systems come online
Ideal for: Data centres, ICU wards, aquarium filtration systems, security networks and any site that cannot tolerate even momentary downtime.
Get Connected With UPS Systems
Integrated Hybrid or Off-Grid Backup Systems
When you can’t afford for power to fail, Powerguard’s integrated hybrid systems provide the most resilient solution. These setups combine multiple technologies into one smart system, ensuring power stability in even the most remote or grid-fragile locations.
Our bespoke systems include:
- Smart Battery Storage for silent, instant backup
- Automatic Load Management to balance demand intelligently
- High-Efficiency Generators that only activate when needed
- Optional Solar Input for greener energy and reduced fuel reliance
Trusted by organisations like Sea Life London Aquarium, Center Parcs and multiple rural NHS Trusts, these systems are built for continuity, sustainability and performance.
Ideal for: Healthcare providers, rural campuses, public venues and critical infrastructure with no margin for error.
Learn More About Off-Grid Energy Independence
Don’t let your business go dark
Powerguard designs, builds and supports complete emergency power systems – all manufactured right here in the UK. From system design to installation and long-term support, everything is handled in-house by our expert engineering team. No outsourcing. No corner-cutting. Just proven resilience you can trust.
Whether you’re upgrading an existing setup or starting from scratch, we’ll work with you to assess risks, define technical requirements and deliver a robust solution built around your real-world needs.
Why trust Powerguard?
- Over 25 years of experience in critical power systems
- Fully designed and manufactured in our UK facility
- Compliant with BS EN 50171 and other key safety standards
- Trusted by hospitals, airports, aquariums, data centres and more
- Bespoke, engineered systems
When the grid fails, we don’t. Let’s protect what matters most.
Call us on 01507 600 688
Email sale@greenelectricchoice.com
