Starting point
We understand the segment's challenges
Where costs and risks really arise in this environment, and why you cannot see them without metering.
Strict security requirements
The solution at the Presidential Palace had to meet strict security requirements. A wireless Wi-Fi network was out of the question.
Historic building, limited cabling
Running new communication cables in a significant historic building was severely limited, with no interference with its historic fabric.
No sub-metering by part of the building
Without sub-metering, it was impossible to track the consumption of individual parts of the building or the key network parameters.
Demands on metering accuracy
The building requires accurate measurement of voltage, current, active and reactive power and power factor at all significant supply points.
Project scope
What we deployed on the project
- 7 three-phase electricity analysers
- Some in the main switch room, others directly in the building’s rooms
- Coverage of all significant supply points
- Modbus communication, peer-to-peer architecture in a private APN
- Industrial edge controller: local aggregation and visualisation
- Data transfer to the higher-level monitoring system

Results · real data from the deployment
Measurable impact
The figures come straight from the deployed monitoring and analytics system.
7
Three-phase analysers
100%
Of significant supply points covered
APN
Private network instead of Wi-Fi
Online
Real-time consumption overview
Accurate measurement of voltage, current, active and reactive power and power factor
Sub-metered consumption by individual part of the building
A secure solution with no interference with the building’s historic fabric
Data for transparent control of the Presidential Palace’s consumption
Concrete benefits · real findings
What the system delivered in practice
Metering without interfering with a historic building
A private APN and peer-to-peer Modbus replaced both the impossible new cabling and Wi-Fi, which was unacceptable for security reasons. The installation respected the historic fabric of the Presidential Palace.
An accurate overview of key network parameters
Three-phase analysers measure voltage, current, active and reactive power and power factor at all significant supply points: the basis for transparent control of consumption.
Your challenges · our answers
What it means for a public building manager
The Presidential Palace, with strict security requirements
A private APN instead of Wi-Fi, secure data transfer
Limited cabling in a historic building
Peer-to-peer Modbus over APN, no interference with the historic fabric
No sub-metering by part of the building
7 energy analysers at all significant points
A need for accurate network parameters
Measurement of U, I, active and reactive power and power factor
Why Nidex Technology
Four reasons, each proven in practice
End-to-end responsibility
From design, hardware supply and installation to data integration, inspections and support. One supplier, one point of responsibility.
Technical precision and standards
We design in line with the Slovak standards STN 33 2000 and STN EN 61439. We issue statutory inspection and test reports (OPOS) with our own staff.
References in regulated environments
Healthcare, industry, state infrastructure: environments with higher demands on accuracy and reliability.
Based in Central Europe
We are based in Nitra, Slovakia, about two hours from Vienna and Budapest, and know the local legislation. Fast response, one team from design to service.
Proposed next steps
Three steps from a meeting to the first results
- 01
Technical meeting
A visit to the selected building. We define the scope, priority locations and constraints.
- 02
Indicative quote
An indicative price based on the agreed scope. Presentation of the technical design.
- 03
Pilot project
Deployment in one building. Verifying functionality, integration and training the operators.
Conclusion
Why it makes sense
The energy monitoring project at the Presidential Palace showed that modern sub-metering can be deployed even in the most sensitive public sector buildings: safely, without interfering with the historic fabric and with full accuracy. Nidex Technology delivered a turnkey solution, from design and installation to data integration, which gives the building manager a transparent overview of the Presidential Palace’s consumption.
Want to see the real consumption of your operation? We start with a site visit and a no-obligation quote. A pilot project on one building proves the benefit before you decide on full deployment.

