The data presented here (customer numbers, distribution network overhead circuit length, distribution network underground circuit length, as well as the number of distribution network poles) in those local government areas (LGAs) that Western Power fully or partially supplies electricity to.
This data does not include customers or assets from other electricity network suppliers that may also service these LGAs (such as Horizon Power). Circuit Lengths are an estimation for each Local Government Area and do not include those circuits that are exclusively designated for street-light supply.
This data is as of 8 November 2022 and as a consequence, cannot be compared to other similar information either published externally or circulated internally within Western Power.
This includes all unplanned interruptions (excludes planned interruptions and interruptions lasting one minute or less). The reliability data includes delays to restoration due to bushfire settings.
Work to influence reliability
Between February and May 2022, Western Power undertook a seven-week package of work in the Northampton, Port Gregory, Horrocks and Geraldton regions, to address over 200 significant network defects, replace about 60 poles, change 50 high and low voltage crossarms, change 48 poles with HV insulators, replace 10 drop-out fuses and 12 ground stays, replace stays, and numerous other defects.
While undertaking these works, we also identified other poles and equipment that needed to be replaced or repaired.
To improve power reliability in Northampton, Horrocks and Gregory we have developed a further targeted network maintenance program.
Scheduled work in 2022/2023
- 1 ground mounted switchgear (used to control, protect and isolate electrical equipment)
- 2 overhead switchgear
- 1 overhead customer service connection
- 3 drop out fuses (devices that protect networks and equipment from current surges and overloads)
- 1 distribution pole cross arms (used to fix securely the wires of the overhead line to poles)
- 1 ground-mounted transformers (used to step down three-phase high voltage to low voltage for distribution to customers)
- 1 pole stays (which keep power poles upright)
- 4 wood poles
Further projects aimed at amending recloser settings are also under way. This work builds on the extensive activities undertaken in this zone following Cyclone Seroja.
Grid augmentation activities
- Installed one protection device to better sectionalise the network and reduce the impact of fault events
- Upcoming additional generation enhancement to Kalbarri Microgrid to enable support to the town of Kalbarri for longer periods is currently in development
- One customer to be converted to stand-alone power system supply