Energy management has always required precision, but the demands of the modern era are unlike anything previous generations of engineers could have imagined,  writes Sadiq Syed,  SVP Digital Energy Software, Schneider Electric.

Century old electricity networks must now accommodate decentralised renewable generation, large-scale energy storage, and highly volatile consumption patterns. At the same time, energy-intensive facilities such as data centres are consuming power at scales scarcely imaginable even a decade ago, driven by the rise of cloud computing, artificial intelligence and a society that never sleeps. For the facilities managers responsible for keeping the lights on this means every decision now carries operational, financial, and reputational consequences.

The scale of the challenge is underscored by projections from the International Energy Agency, which estimates that electricity demand from data centres alone could approach 945 terawatt-hours by 2030, roughly equivalent to Japan’s entire national consumption today. Meeting such demand will require more than additional infrastructure investment. It will need sophisticated balancing of supply and demand, integration of renewable sources, and a fundamentally new approach to managing energy within buildings.

Buildings at the heart of energy strategy

Buildings sit at the centre of this challenge. They account for just under a third of global energy consumption, making them both a source of risk and the primary opportunity for efficiency gains. But modern facilities are complex ecosystems, each with unique operational demands. Hospitals must maintain uninterrupted service to critical systems, while data centres require precise control of cooling and energy distribution to maintain performance. In these situations, even minor optimisation gaps compound rapidly, diminishing flexibility and turning energy from a resource into a constraint on organisational ambitions.

For instance, a poorly optimised HVAC system or mismanaged lighting schedule in a large facility can lead to substantial unnecessary energy consumption and significantly higher operational costs.

Data overload, limited clarity

Facilities aren’t short on data, in fact many are drowning in it.

Energy managers need to ingest and analyse information from HVAC, lighting, power distribution, on-site generation, and backup systems and ensure they are all meeting often complex compliance requirements. All too often that information is spread across different teams and platforms across the business, which makes it almost impossible to create a holistic image of what is happening across the built environment.

This not only slows decision making as teams work to manually collate data but can obscure problems until they become too expensive to miss. It’s no surprise that a many facility managers in EMEA describe their workload as already stretched, with system complexity and advanced analytics adding pressure rather than relief.

In these situations, even the smallest errors can grow into big problems. An HVAC schedule that no longer matches occupancy patterns or a lighting system left running out of hours may seem trivial in isolation, but across a large facility they quietly erode margins and inflate energy bills.

Taming the complexity

The problem many facilities managers’ face is their tools have been left behind by the systems we now run. Fortunately, the gap is closing.

This is most obvious when we look at how systems are now starting to fit together. We are moving beyond simple connectivity towards coordination. Assets can respond to shifting conditions rather than simply reporting on them. Operational behaviour starts to adapt over time. Insights gained in one facility begin to inform decisions in another, meaning time isn’t wasted relearning the same lessons site by site.

As this process continues complexity begins to transform from an obstacle to an asset. Instead of overwhelming teams, data now provides insights to help power decision making. Instead of reacting to issues after the fact, facilities can begin to prepare for what’s coming, whether that’s seasonal demand fluctuations, evolving load profiles or tighter performance constraints from the grid.

The path to proactivity

The new era of energy management will bring real-time insight and continuous optimisation, enabling decision makers to be proactive rather than reactive. Organisations that fail to evolve will start to struggle to perform even the most basic of tasks. Inefficiencies compound. Flexibility disappears. Energy becomes a growing constraint rather than a managed resource.

It is only through adopting platforms which scale with their facilities and can integrate new technologies easily that energy engineers will avoid this fate.

The turning point

The built environment stands at a critical juncture. Energy demand continues to rise, scrutiny is intensifying, and the tolerance for operational inefficiency is vanishing. The defining question for energy managers is no longer how much data their buildings can generate, but whether they can translate complexity into actionable insight. Those who do will set new benchmarks for efficiency, resilience and sustainability, shaping the built environment of the future. Those who cannot, will find themselves constrained by the very systems they are tasked with managing.

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The story first appeared in the Spring issue of Energy & Sustainability Solutions.