ADDC Electrical Connection Approvals
Before a building in Abu Dhabi can draw power, the Abu Dhabi Distribution Company (ADDC) must approve the load, review the electrical design, inspect the works and fit a meter. This guide explains the connection lifecycle and where the consultant and contractor fit in.
In Abu Dhabi, the electricity (and water) distribution network is generally operated by the Abu Dhabi Distribution Company (ADDC), within the emirate's regulated utility framework. A building cannot simply be wired and switched on — the connection to the public network is a regulated service that ADDC controls from the first load application through to energising the meter.
This article walks through the ADDC connection approval lifecycle for a typical project: estimating and applying for the load, getting the electrical design and substation/room arrangement approved, having the works inspected, and finally obtaining metering and energisation. Understanding this sequence helps owners, consultants and contractors avoid the most common delay — requesting a connection before the design and infrastructure actually meet ADDC's requirements.
How it works
The process begins with a load application. The consultant estimates the building's maximum demand (in kW or kVA) from the connected load and a diversity assessment, and applies to ADDC for a supply of that capacity. ADDC reviews the requested load against the available network capacity and confirms the point of supply, the voltage level (low voltage for smaller demands, or 11 kV and a dedicated substation for larger ones) and any network reinforcement needed.
Next comes electrical design approval. The consultant submits the single-line diagram, load schedules, distribution-board arrangement, cable sizing, earthing and (where required) substation and transformer details for ADDC review against its regulations and standards. ADDC either approves the design or returns comments. For larger developments this stage also fixes the substation location, the metering position and the responsibilities for the incoming cable.
With the design approved, the building's electrical infrastructure is installed — the substation or electrical room, switchgear, distribution boards, main cabling and earthing — using approved materials and a licensed contractor. Where a customer substation is involved, it must be built to ADDC's construction and safety requirements so it can later be handed over or interfaced with the network.
ADDC (or its authorised inspectors) then inspects the installation to verify it matches the approved design and is safe to connect: correct switchgear ratings, cable sizes, earthing and clearances, and a compliant metering arrangement. Any defects are recorded and must be corrected. This inspection gate is where unapproved equipment or deviations from the approved single-line diagram are typically caught.
Once the installation passes inspection and the commercial account is in order, ADDC installs the meter and energises the supply. From this point the connection is live and billed, and the boundary of responsibility is clear: ADDC owns and maintains the network up to the metering/point of supply, while everything downstream is the building owner's installation. No permanent supply should be used before this formal energisation.
Main types
In the UAE
- In Abu Dhabi, electricity distribution and connection approvals are generally handled by the Abu Dhabi Distribution Company (ADDC), within the emirate's regulated utility framework; the Al Ain area has historically been served by a related distribution entity, with distribution generally consolidated under ADDC.
- Designs, cable sizing, earthing and substation arrangements must follow ADDC's regulations and only approved/listed materials may be used, with inspection acting as a distinct gate before energisation.
- Electrical connection approvals run in parallel with other authority approvals (building permit, Civil Defence, Estidama) and the supply should be sized for the UAE's high cooling load, since air-conditioning dominates a building's maximum demand.
How GPR applies this
As an Abu Dhabi-based MEP and electrical contractor, GPR coordinates the full ADDC connection lifecycle — supporting load estimation and the supply application, preparing single-line diagrams and load schedules for design approval, installing compliant switchgear, cabling, earthing and (where required) customer substations, and managing inspection through to metering and energisation. Our teams align the electrical connection with the building permit and other authority approvals so the supply is live when the project needs it.
Frequently asked questions
Who approves the electrical connection in Abu Dhabi?
The Abu Dhabi Distribution Company (ADDC) typically reviews the load and design, inspects the installation, and installs the meter to energise the supply, within the emirate's regulated utility framework.
What is a load application?
It is the formal request to ADDC for a supply of a stated capacity (in kW or kVA), based on the building's estimated maximum demand after applying diversity to the connected load.
When does a project need its own substation?
Generally, larger demands are supplied at 11 kV through a dedicated customer transformer/substation built to ADDC requirements, while smaller demands take a low-voltage connection that is metered directly.
Why do ADDC connections get delayed?
Common causes include underestimating the load, submitting a design that does not meet ADDC's regulations, using unapproved equipment, or requesting connection before the infrastructure passes inspection.
Who owns the network up to the building?
ADDC owns and maintains the network up to the agreed point of supply / metering position; everything downstream of that boundary is the building owner's electrical installation.