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The Regulation and Supervision Bureau issues the first Self-Regulating Generation Licence

The Bureau has granted a Solar Photovoltaic (PV) Self-Regulating Generation Licence to Khalifa Khamis Saeed...

The Regulation and Supervision Bureau issues the first Self-Regulating Generation Licence
Book of Humanitarian Pioneers; local and international achievements - Khalifa Foundation

To take a look at the book click here

Book of Humanitarian Pioneers; local and international achievements - Khalifa Foundation
Tawdheef exhibition 2017

The Bureau will be participating in the Tawdheef Exhibition 2017 which is taking place at...

Tawdheef exhibition 2017
The Launching of new Bureau’s publications in the International Water Summit 2017

Abu Dhabi: 18 January 2017: The Regulation and Supervision Bureau (“Bureau”) has shed lights on...

The Launching of new Bureau’s publications in the International Water Summit 2017
IWS 2017

The Bureau will be participating in the 5th International Water Summit (IWS) that is taking...

IWS 2017
The Regulation and Supervision Bureau receives the “Outstanding Government Services” Award

Given the remarkable and outstanding accomplishments achieved, the Regulation and Supervision Bureau had received the...

The Regulation and Supervision Bureau receives the “Outstanding Government Services” Award
Saudi Delegation of Electricity & Cogeneration Regulatory Authority visited the RSB

The Regulation and supervision Bureau held a meeting with the Saudi delegation of Electricity &...

Saudi Delegation of Electricity & Cogeneration Regulatory Authority visited the RSB
Abu Dhabi Energy Authority chaiman visits SkyLab & meets with Singapore’s Energy Market Authority

The Abu Dhabi Energy Authority has concluded its participation at the Singapore International Energy Week....

Abu Dhabi Energy Authority chaiman visits SkyLab & meets with Singapore’s Energy Market Authority
Chairman of Abu Dhabi Energy Authority visits Singapore International Energy Week Exhibition

The Abu Dhabi Energy Authority is participating at the Singapore International Energy Week, held during...

Chairman of Abu Dhabi Energy Authority visits Singapore International Energy Week Exhibition

Monitoring performance


The Bureau uses similar regulation principals to those in the UK and US for network performance evaluation. All licensees who operate transmission or distribution systems are required to report regularly on their performance in respect of system security, availability and quality of service.

This information provides a picture of the continuity and quality of supply experienced by final customers. The performance report continues to incorporate year-by-year comparisons to help identify trends in company performance and to highlight areas where improvements are needed to raise the level of performance.

The quality of supply experienced by customers is influenced by the performance of each stage of electricity supply, generation, transmission and distribution. However, the number of supply failures caused by failure or lack of generation has usually been extremely small, and the contributions from transmission system failures have also been minor. Distribution systems are by far the most significant determinant of the quality of supply experienced by final customers.

a) Distribution systems

There are two distribution licensees in the Emirate of Abu Dhabi – Al Ain Distribution Company (AADC) and Abu Dhabi ..

There are two distribution licensees in the Emirate of Abu Dhabi – Al Ain Distribution Company (AADC) and Abu Dhabi Distribution Company (ADDC). To determine how well both of these distribution companies are performing, the following two indicators are measured:

Security of supply

System Average Interruption Frequency Index (SAIFI) is the average number of times that network customers experience an outage during a year. SAIFI is used by distribution companies as a network security indicator. For each company, the SAIFI figures show the number of supply interruptions per customers for the relevant year.

The data covers all interruptions, including those caused by bad weather, faults and pre-arranged shutdowns for maintenance and construction.

Availability of supply

Distribution companies use System Average Interruption Duration Index (SAIDI) to show supply availability by high lighting performance in respect of consumer minutes lost per connected customer. SAIDI is an indicator of the promptness and speed with which customers are restored following outages. The report shows the regional and the overall SAIDI figures. Information is also given on the quality of service, in terms of restoration times achieved, provided by these companies. The report also provides a summary of HV outages duration, estimated energy lost, abnormal events, frequently interrupted overhead lines during the relevant year and the action plan for improvements.

b) Transmission systems

The Abu Dhabi transmission network transports large amounts of energy and is essential infrastructure. To ensure that customers have continuity ..

The Abu Dhabi transmission network transports large amounts of energy and is essential infrastructure. To ensure that customers have continuity of supply the transmission network has been designed to international security standards ensuring that customers continue to receive supply even in the event of single or multiple failures on the network. The number of incidents that result in a loss of supply to final customers is extremely small.

To determine how well TRANSCO is performing, the following two indicators are measured:

Unsupplied energy

Following a transmission system incident where customers have an interruption to their supply, TRANSCO must produce a report and estimate the unsupplied energy. The number of system incidents, unsupplied energy and contributing factors are reported.

Availability of supply

One measure of the performance of a transmission system is the percentage of the time during which the system is unavailable for use. This indicator provides the total system unavailability as well as a breakdown of unavailability by classification of the causes.

c) Standards of supply quality

It is a statutory requirement on the transmission and distribution companies to keep voltage and frequency within prescribed limits, in ..

It is a statutory requirement on the transmission and distribution companies to keep voltage and frequency within prescribed limits, in all but exceptional circumstances. Transmission system operators report the generator incidents and the change of system frequency as a result of such generator outages. Distribution system operators provide details of complaints by customers who were receiving voltage outside statutory limits.

In response to such instances, companies need to consider what action to take and whether local reinforcement of the distribution system or other measures may be needed.

A key function of the Bureau is to monitor and promote continuous improvement in the performance of the electricity supply system. To achieve this, the Bureau uses internationally recognised performance indicators for the Distribution and Transmission network. The independent generation companies are incentivised by way of availability payments to ensure that their plant is available on a near-continuous basis (the companies achieve, on average, over 95% availability through the year).

In addition, the Bureau investigates major system incidents or outages which affect customers. These may include accidental tripping of equipment, failures of plant, widespread outages or incidents where the time to restore power was excessively long.

The new price control, commencing January 2006, includes a performance incentive scheme (PIS) for the Distribution and Transmission companies which provides annual bonuses for year on year improvements in the following key performance indicators:

Transco PIS indicators:

- Availability: = {total hours each transmission circuit or transformer is available} divided by {total number of circuits & transformers x hours in the year}

- Energy lost: = total MWh unsupplied due to unplanned incidents in a year (excluding incidents resulting from users of the transmission system)

Disco PIS indicators:

- SAIDI: System Average Interruption Duration Index = number of customer minutes lost in any one year, divided by the total number of connected customers (average for the year)

- SAIFI: System Average Interruption Frequency Index = total number of customer interruptions in any one year, divided by the total number of connected customers

[Note: for distribution companies’ indicators the term ‘Availability or Customer Minutes Lost (CML)’ is the same as SAIDI; the term ‘security or Customer Interruptions (CI)’ is equal to SAIFI x 100]

In addition to the above indicators the Bureau requires companies to report more detailed statistics on a monthly and annual basis. These are used to assess the impact on customer service levels and to work with the companies to enhance processes and systems which will improve customer satisfaction into the future.

The overall levels of network performance for the transmission and distribution companies are shown in the Bureau’s annual reports under the Publications section.

Tawdheef exhibition 2017

The Bureau will be participating in the Tawdheef Exhibition 2017 which is taking place at ADNEC starting on 30 January to 01 February. The Bureau aims to attract and hire...

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We regulate the

water, wastewater and electricity

sector of the Emirate of Abu Dhabi