How VDAB achieved full ISO 50001 compliance with a 24/7 Virtual Energy Manager

VDAB (Vlaamse Dienst voor Arbeidsbemiddeling en Beroepsopleiding) is the Flemish public employment service (Belgium) dedicated to supporting a sustainable, inclusive labour market. It achieves this by mediating between job seekers and employers and providing professional training to bridge skills gaps and enhance employability.

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Behind this mission sits a substantial real-estate footprint: a diverse portfolio of offices, training centres, and public buildings covering approximately 400,000 m² across 140 sites.

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Energy management plays a strategic role in VDAB’s operations. Rising energy costs, public accountability, and long-term climate objectives require more than periodic reporting — they demand continuous control and optimisation.  

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This approach is further formalised in VDAB’s need to be ISO 50001-compliant, which was a key driver behind their decision to modernise how energy data is collected, analysed, and acted upon in real time.

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We spoke with Alexander Daenen, Head of Environment and Energy at VDAB, who brings decades of experience in energy management across both the private (industrial) and public sectors.  

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He shared why VDAB launched a full rethink of its energy management approach, how the organisation evaluated the market, and what has changed since implementing Enersee across a complex portfolio of office buildings, educational campuses, and technical training facilities.

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When Alexander joined VDAB, energy tracking existed — but only at a very high level.

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“At that time, we were mainly tracking ISO 14001 indicators on a monthly basis,” he explains. “That’s fine for reporting, but it doesn’t help you manage energy day to day.”

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ISO 50001 requires a Plan–Do–Check–Act (PDCA) cycle: defining baselines, monitoring performance, detecting deviations, and continuous improvement. In practice, however, VDAB lacked the real-time visibility needed to make that cycle effective.

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To close that gap, the team decided to move toward 15-minute real-time energy telemetry across the portfolio. This would allow them to detect inefficiencies early, validate corrective actions, and demonstrate continuous improvement — all core ISO 50001 principles.

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However, existing energy management systems quickly showed their limits.

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Many relied on static threshold alarms — fixed limits that didn’t account for context such as weather, seasonality, or occupancy. As a result, alerts were either irrelevant or ignored.

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“You’d get alarms that made no sense,” Alexander says. “For example, summer HVAC loads triggering alarms because winter thresholds were being exceeded. That creates noise, not insight.”

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When you need to get ISO 50001-certified, false alarms are more than an annoyance: they undermine trust, slow down corrective action, and make it harder to prove effective control during audits.

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For a small central energy team overseeing hundreds of thousands of square metres, this approach was unsustainable. VDAB needed a system that could think, not just measure.

VDAB launched a formal RFP to modernise its energy management stack. In total, 15 vendors were evaluated but, in the end, VDAB chose Enersee as its energy management software and intelligence layer.

Enersee now acts as VDAB’s 24/7 Virtual Energy Manager, continuously scanning data streams and surfacing only what truly matters.

Alexander DAENEN

Head of Environment & Energy | Energy Manager ISO 50001

“Enersee is leaps and bounds ahead of what a legacy EMS system can do...It’s lightyears ahead”

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One of the most valued capabilities is outside-hours energy usage detection — identifying buildings that consume energy when they shouldn’t, a key control mechanism for ISO 50001.

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“That feature alone lets me sleep at night,” Alexander says. “If a building consumes energy when it shouldn’t, I know I’ll be informed.”

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Enersee also enables portfolio-wide benchmarking, allowing VDAB to compare buildings against each other and against historical performance — a critical input for energy reviews and improvement actions under ISO 50001.

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While energy savings matter, Alexander is clear that time and manpower savings are just as critical for VDAB.

Alexander DAENEN

Head of Environment & Energy | Energy Manager ISO 50001

With a small central team, time is always the limiting factor,” he explains. “Enersee acts as a 24/7 Virtual Energy Manager. Even if people are on holiday or unavailable, I still have confidence that everything is monitored.

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That confidence translates into measurable impact. VDAB has already reduced its primary energy consumption by 55% since 2005 and achieved 30% CO2 reduction within the last 5 years. In 2025 alone, energy-efficiency projects delivered 30% higher savings than forecasted, resulting in an ROI of 162% with Enersee.

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A less visible but equally important shift was the removal of the human bottleneck in energy management. By embedding expert logic directly into the platform, Enersee reduces the risk of human error and the natural limitations of manual analysis — from missed signals to inconsistencies between people or teams.  

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Instead of relying on a few individuals to constantly interpret data, expertise is delivered consistently by the AI, every hour of every day. As Alexander puts it, this means you no longer need a large team of energy experts —you only need to trust a few high-quality energy people, supported by a system that applies their expertise reliably and at scale.

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Just as importantly, the way the energy team works has fundamentally changed. Continuous monitoring and intelligent alerting have eliminated much of the manual effort traditionally associated with ISO 50001 compliance.

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There is no longer a need for constant dashboard checking, chasing false alarms, or manually triaging thousands of data points. Instead, the team can focus on real issues that require action, rather than validating whether an alert is meaningful.

Alexander DAENEN

Head of Environment & Energy | Energy Manager ISO 50001

“Every alert we get is relevant,” Alexander says. “That’s essential. If people don’t trust the alerts, they stop using the system.”

By filtering out noise and surfacing only actionable deviations, Enersee has significantly reduced the operational burden of maintaining ISO 50001. Continuous, documented monitoring is now built into daily operations, rather than treated as a periodic reporting exercise.

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For VDAB, the result is not just better energy performance, but greater audit readiness, operational confidence, and peace of mind — knowing that energy controls remain active at all times, regardless of staffing availability.

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