A recent power outage near Heathrow Airport revealed how even the most advanced operations can be affected by power disruption. This article explores key lessons for any organisation that relies on uninterrupted power, whether in aviation, healthcare, manufacturing, data, or public services.
Why Power Resilience Matters Now More Than Ever
Power resilience is no longer just a consideration for data centres or hospitals. From airports and energy providers to logistics, public sector facilities, and manufacturers – power continuity is mission-critical.A recent event at Heathrow Airport has brought renewed focus to the complexity of managing operations when primary power fails. The incident, caused by a fire at a nearby electrical substation, highlights how essential it is for organisations to have well-planned, fully integrated backup power strategies in place.
What Happened at Heathrow (And What It Taught Us)
According to a BBC News report, a fire at the North Hyde substation disabled both the main power feed and its backup systems. While electricity was still available from other substations, switching over and safely restarting hundreds of critical systems took time, prompting Heathrow to temporarily suspend operations as a precaution.
Heathrow’s on-site generators continued to support essential systems such as runway lighting. However, bringing broader infrastructure back online, including fuelling, boarding bridges, and escalators, required a methodical and carefully controlled process.
“There were a number of systems we had to shut down and then bring back up and ensure they are safe.”
— Heathrow CEO, Thomas Woldbye (BBC)
A Heathrow spokesperson added:
“Given Heathrow’s size and operational complexity, safely restarting operations after a disruption of this magnitude was a significant challenge.”
The incident led to the cancellation of over 1,300 flights and prompted a UK government investigation into power resilience across critical infrastructure.
Backup Doesn’t Always Equal Resilience
Even when generators are installed, true resilience requires more than hardware. A successful power continuity plan involves:
- System design tailored to the operational environment
- Intelligent switching and controls
- Load testing and contingency planning
- 24/7 monitoring and proactive maintenance
Expert Insight
“Even if your site operates multiple generators, that doesn’t guarantee resilience. Without proper system integration, coordinated testing, and real-time monitoring, there’s a risk that backup power won’t perform when it’s needed most.”
— James Norman, Operations Manager, Shenton Group
Beyond Compliance: Best Practice in Power Strategy
Industry guidance, such as that from the aviation and healthcare sectors, recommends N+1 redundancy (having at least one additional backup for every critical component) and full failover planning to eliminate single points of failure.At Shenton Group, we help clients across the UK go beyond minimum standards, designing dependable, scalable backup power systems that comply with regulations.
Supporting Critical Infrastructure Across the UK
We work with organisations operating in:
- Healthcare
- Aviation & Transport
- Data Centres
- Public Services
- Manufacturing & Industry
- Energy & Utilities
Each solution is tailored to the site’s risk profile, compliance requirements, and long-term objectives.
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Case Study: Resilience Planning at a Large UK Airport
When a large UK airport’s power equipment supplier withdrew mid-project, Shenton Group was brought in to implement a critical backup plan.
We deployed a temporary generator system to avoid disruption, then designed and delivered a permanent standby power solution in an N+1 configuration, tailored to site-specific operational demands.
We now support over 20 systems across the airport with long-term maintenance contracts, ensuring continuous performance and reliability.
What We Offer
- Emergency Generator Rental
Rapid deployment across the UK to keep you running during outages. - Turnkey Standby Power Installations
Design, supply, installation, and commissioning—fully integrated. - Maintenance Contracts with Remote Monitoring
24/7 oversight, fault detection, and proactive support. - Load Bank Testing
Simulates real-world power conditions to validate generator performance.

More Than Just Generators: A 360° Power Resilience Strategy
Generators are only part of the solution. At Shenton Group, we take a consultancy-first approach to ensure your entire backup power infrastructure works as a unified system.
Our technical experts design and integrate:
- Generators
- UPS (Uninterruptible Power Supplies)
- ATS (Automatic Transfer Switches)
- Control systems and remote monitoring

Our End-to-End Service Includes:
- Power resilience design and risk assessment
- Turnkey installation, commissioning, and handover
- Comprehensive maintenance packages with 24/7 support
- Access to emergency generator hire anywhere across the UK
Whether you’re planning for the future or responding to an urgent power risk, we deliver scalable solutions with full national coverage.
Frequently Asked Questions
What is power resilience?
The ability to maintain operations during a power failure using integrated backup systems like generators, UPS, and switchgear.
Is a backup generator alone enough?
Not always. Without integration, testing, and monitoring, even well-installed generators may not activate or operate effectively under pressure.
Can you support both short-term and long-term needs?
Yes. We provide emergency generator hire as well as fully engineered permanent backup systems.
Tailored Support by Role
We know that power resilience means something different depending on your role. That’s why we align our support with your responsibilities:
Operations Managers
We deliver site audits, system testing, and contingency planning to ensure you’re ready for real-world disruption. Our team helps document and rehearse safe switchovers and system recovery.
Procurement Leads
We provide full budget planning, lifecycle cost analysis, and ROI models to support your business case—whether it’s for capital investment or short-term hire.
Facilities & Engineering Teams
We support your teams with preventative maintenance, remote system monitoring, and full compliance with UK standards. Our technical support helps you stay audit-ready and fault-free.
Plan Ahead. Stay Powered.
From substation failures to extreme weather, cyber threats or grid instability, disruptions are increasing.
The difference between recovery and operational downtime lies in your ability to plan, test, and respond effectively.
→ Contact Shenton Group today to secure your power continuity strategy and protect what matters most.