Western Power vs Synergy: what's the difference and why it matters for solar

Many Perth households call Synergy to report a power outage, when the correct contact is Western Power. Others complain to Western Power about their electricity bill, when billing is entirely Synergy's responsibility. The confusion is understandable (two companies share your electricity supply), but knowing which does what is essential for solar connections, outage reporting, and billing queries.

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The two-company structure: distributor and retailer

WA's electricity market separates the physical network from the retail service:

Western Power is the distributor: the company that owns and operates the physical electricity poles, wires, transformers, and substations across the SWIS (South West Interconnected System) network. Western Power's infrastructure physically delivers electricity from the grid to your home.

Synergy is the retailer: the company that buys electricity from generators (including solar farms), sells it to residential customers on a retail tariff, measures your consumption, and sends you a bill. Synergy does not own network infrastructure.

Think of it as: Western Power builds and maintains the roads; Synergy provides the vehicle and charges you for fuel.

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Who to contact for what

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How solar connects to both companies

When you install a solar system in Perth, both companies are involved:

Western Power's role:

1. Your installer submits a Network Connection Application (NCA) to Western Power before installation: this approves the connection of your solar system to the grid
2. Western Power assesses the application and may impose an export limit (at most 5kW, in total across all phases, on single-phase or three-phase) based on local network capacity

3. Western Power issues an approval (or request for additional information) within statutory timeframes
4. After installation, your installer obtains an approval number for the connection
5. Western Power is responsible for the Network Connection Notice (NCN), the document proving your system is legally connected

Synergy's role:

1. Synergy processes the DEBS (Distributed Energy Buyback Scheme) application, which registers your system to receive the export feed-in credit on your bill
2. Synergy measures your export to the grid (via your smart meter) and applies the credit at the rate in your tariff
3. Synergy applies solar export credits to your quarterly bill

Important: You can generate solar and use it yourself (self-consumption) immediately after Western Power connection approval, even before your DEBS application is complete. The DEBS registration is only required to receive payment for exported energy.

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The meter

Your electricity meter sits in the middle of this relationship:

• Western Power owns and installs the meter: if you're requesting a new smart meter or have a meter fault, Western Power is the correct contact
• Synergy reads the meter data: your billing is based on data provided from Western Power's meter to Synergy's billing system

For smart meters, Synergy can access half-hourly consumption data from the meter. This is what powers the My Account consumption graphs and the usage analysis that tools like BillWise use.

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Why the distributor/retailer distinction matters for solar

Export limits are set by Western Power, not Synergy. If your installer says your 10kW system will be export-limited to 5kW, this is a Western Power network capacity decision for your specific network feeder. Synergy has no ability to change it. Contact Western Power if you want to understand the limit or request a review.

DEBS rates are set by Synergy, not Western Power. The feed-in tariff you receive (currently 10c/kWh peak, 2c/kWh off-peak under DEBS) is a Synergy commercial offering. Western Power does not pay you for exported energy.

Outages during peak solar generation don't generate export credits. If Western Power's network has an outage (your solar inverter shuts down automatically), you don't generate or export during that period. Synergy cannot compensate for this.

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What about gas?

Western Power distributes electricity only. Gas distribution in WA is managed by ATCO Gas (the network operator, equivalent to Western Power's role for electricity), and gas retail is competitive: you can choose between retailers including Alinta Energy, Kleenheat, AGL, ENGIE, and Origin.

There is no equivalent of Synergy's retail monopoly for gas. WA gas retail is a competitive market.

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For solar-related contacts: Western Power handles everything physical (grid connection, export limits, network outages, meter installation). Synergy handles everything financial (tariffs, DEBS registration, bill credits, payment). When in doubt about who to call, start with Synergy (13 13 53) for billing and Synergy DEBS queries, and Western Power (13 10 87) for connection approvals and outages.