The Trilemma: Three Strategies for Modern, Reliable Substation Operations

Martyn Williams, Managing Director of COPA‑DATA UK, explains how the UK government faces a unique "trilemma"—balancing secure, affordable, and clean energy while avoiding blackouts. The sector’s technology has advanced rapidly, yet the infrastructure—400,000 substations—lags behind. What can engineers do to modernise and ensure reliability?

Keep It Location‑Independent

Most UK substations were built for a fossil‑fuel era and are now remote, unmanned, and lack connected infrastructure. Manual visits by energy control operators mean data is outdated, hard to analyze, and root‑cause diagnosis is delayed. An intelligent, connected substation transforms this asset into a real‑time, predictive machine that can be monitored and maintained from anywhere.

Intelligent software—such as COPA‑DATA’s zenon—can be integrated into existing equipment, turning each substation into an IoT‑enabled node. Data is stored centrally, providing instant access to real‑time and historical insights regardless of age or location.

Make Use of Data

Collecting data without analysis defeats its purpose. Advanced automation software merges live telemetry with historical records to deliver a comprehensive performance overview. This facilitates cross‑site benchmarking, predictive analytics, and maintenance planning that extends asset life and reduces downtime.

With substations spread across the country, cloud storage is the logical choice. COPA‑DATA’s zenon pairs seamlessly with Microsoft Azure, offering fast, secure access to control‑centre dashboards and alerts from any location.

The result is a network that instantly flags anomalies, updates information in real time, and keeps operators informed 24/7.

Encrypt Your Data

Storing operational data in the cloud introduces cyber‑security concerns. Standards such as IEC 62443 set the baseline, but proactive measures are essential. COPA‑DATA’s zenon employs binary storage, encrypted network protocols, and a split‑data architecture that keeps key location‑based data on‑site while moving process data to the cloud.

Continuous monitoring, combined with robust encryption, mitigates cyber‑attack risks and protects critical infrastructure.

By applying these three strategies—location‑independent connectivity, data‑driven insights, and rigorous encryption—energy distributors can meet the trilemma, embrace renewable sources, and keep millions of homes powered.

The author is Martyn Williams, Managing Director of COPA‑DATA UK.