Genuinely Efficient Office Buildings –
energy only when it is actually needed

In office buildings and administrative centres, air conditioning often runs through Sunday nights, lights burn in empty corridors and the server room is never audited. Alligator Analytica makes actual energy consumption visible – per building, floor and consumer group – and shows you where you can start saving immediately.

15–25 %
typical energy savings
< 12
months payback period (net)
45 %
BAFA subsidy available
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The 3 Biggest Energy Consumers
in Offices & Administration

Office buildings have a frequently underestimated savings potential. Most losses are not caused by poor technology, but by a lack of transparency about actual usage behaviour.

01

HVAC & Air Conditioning

Heating, ventilation and air conditioning (HVAC) account for 40–50 % of electricity consumption in office buildings. Many systems run on fixed time schedules – regardless of occupancy, outdoor temperature or public holidays. At weekends and during holiday periods, the air conditioning runs just as it does on a normal Monday.

Typical Savings Potential
8–15 % through occupancy-based operating schedules, outdoor temperature compensation and night setback
02

Lighting & Operating Hours

Lighting in open-plan offices, corridors, stairwells, car parks and outdoor areas often operates without presence sensors or daylight controls. In many buildings, lights remain on for hours after the end of the working day – due to a lack of automatic shutdown and insufficient transparency.

Typical Savings Potential
3–7 % through zone-based switching automation, presence sensors and operating-hours monitoring
03

IT Infrastructure & Server Rooms

Server rooms and data centres run around the clock – but how efficiently? Cooling is often oversized, UPS units have aged inefficiently and redundant servers are never switched off. In mid-market companies (SMEs) with their own server room, this is a frequently overlooked cost block representing 15–20 % of total electricity consumption.

Typical Savings Potential
2–5 % through PUE monitoring, server room climate optimisation and decommissioning of unused systems

Savings Targets in Office & Administration –
realistic and verified

Figures from projects in administrative buildings and corporate headquarters with 2,000–20,000 m² of usable floor space, 1 to 12 sites.

10 %
Immediate effect: HVAC operating hours
Achieved simply by making overnight and weekend operations visible and adjusting switching times accordingly
+7 %
Lighting & standby consumers
Zone-based switching automation, operating-hours monitoring, identification of permanently active consumers
+5 %
Server room & IT infrastructure
PUE optimisation, server room climate management and identification of unused systems
≥20 %
Total savings (combined)
When all identified measures are fully implemented within an ISO 50001 framework
Office Specifics: Operating Hours as the Primary Lever

In office buildings, the greatest lever is operating-hours optimisation: once you know that 40 % of the usual energy consumption occurs at weekends without a single employee on site, you can act immediately. Monitoring makes this "baseload creep" visible – and eliminable.

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Case Study · Office & Administration

Mid-market service company, 5 sites, Germany

5 office buildings, 3,500–8,000 m² per site, 2.1 million kWh annual consumption (combined) – no cross-site monitoring, HVAC running on fixed weekly schedules from 2016, server rooms never energy-audited.

Rollout duration (all sites) 6 weeks
ISO 50001 certification after 9 months
Total savings (year 1) – 21.3 % (≈ €72,000/year)
Weekend consumption reduced – 63 % (HVAC switching times)
BAFA BEW Module 3 35 % grant
Payback period (net) approx. 8 months
Typical insights after 4 weeks
  • Air conditioning and ventilation consume 70–80 % of weekday energy on weekends – in empty buildings
  • Heating and cooling run simultaneously in many buildings – a classic, measurable system fault
  • Site comparison profiles make it possible for the first time to identify outliers among tenanted areas
Supported Protocols & Systems
M-Bus BACnet KNX Modbus TCP OPC-UA MQTT Smart Meter BMS Systems

Related Resources

Implement ISO 50001 BAFA Funding up to 45 % Energy Audit DIN EN 16247 Calculate Savings What Does an EMS Cost?

When Does Your Building
Run on Minimum Power?

In a free initial consultation, we will show you which consumers in your office buildings are drawing power unnecessarily – and how quickly an energy management system pays for itself.

Check Your Potential Now Calculate Savings →