A building can be finished and still sit empty because the power is not connected. In Abu Dhabi, the electricity connection follows a set sequence with the distribution company, and most delays come from late or incomplete submissions. Here is how the path usually runs, and where projects lose time.
1. Load calculation and design
The MEP consultant calculates the building’s connected load and maximum demand, system by system: lighting, small power, air conditioning, pumps, lifts and any EV chargers. This sets the size of the supply and the main distribution board, and shows whether the plot needs its own substation.
The design must follow Abu Dhabi’s Electricity Wiring Regulations, which cover cable sizing, protection, earthing and installation methods.
2. Design submission and approval
The consultant submits the electrical drawings, load schedules and single-line diagram to TAQA/ADDC for review. All comments must be closed and the design approved before installation goes too far, because changes after approval mean resubmission.
3. Substation and supply planning
For larger loads, the distribution company may require a substation on the plot, with a defined room size, access and ventilation. This needs to be settled early because it affects the architectural layout and the site plan.
4. Installation by a qualified contractor
The electrical installation must be carried out by a contractor registered with the distribution company, following the approved drawings. Materials such as cables, distribution boards and breakers should be approved by the consultant before they are ordered.
5. Testing and inspection
Before connection, the installation is tested for insulation resistance, earth resistance, continuity, polarity and the operation of protective devices. Test certificates are prepared, and the distribution company inspects the installation on site.
6. Meters and energisation
Once the inspection passes, the meters are installed and the supply is energised. The temporary power used during construction, often generators, can then be removed.
Where projects lose time
- Load schedules that no longer match the final equipment, for example after a change of chiller or VRF brand.
- Late decisions on EV chargers, kitchen equipment or tenant loads.
- Substation rooms whose size or access does not meet the requirements.
- Missing test certificates or as-built drawings at inspection.
- Site works that run ahead of design approval and have to be redone.
A simple checklist
- Freeze the major equipment selections before the final load schedule.
- Agree substation needs with the consultant at concept stage.
- Track every review comment in one register until it is closed.
- Put testing and inspection dates into the programme from the start.
- Keep as-built drawings updated as the work progresses.
How TEN X can help
TEN X carries out electrical works as part of its MEP packages and works closely with the project consultant on submissions to TAQA/ADDC. We plan testing, inspection and energisation into the build programme, so the power is ready when the building is.
Requirements and procedures are set by the distribution company and can change. Always confirm the current process with your consultant and TAQA/ADDC.
