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Solar

Solar panels may all look similar, but there’s no one-size-fits-all solution. Get the facts on solar and the grid before you buy or apply to connect your home or business. 

Solar and your suburb

We love solar here at Western Power, in fact we play an important role in reviewing and connecting all residential and commercial solar power systems to the grid.

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Choosing the right solar system

Thinking about getting a solar power system installed for your home? Hundreds of thousands of Australians are already benefiting from this clean source of renewable energy, so you’re in good company.

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Your solar panels and the grid

If you need more convincing, here’s five reasons why staying grid connected helps you get the most out of your solar panels.

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How solar connects to the grid

Solar on rooftops is now one of the biggest sources of power to the grid. But have you wondered how it gets from your roof to the network?

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Thinking solar could take your business or property development to the next level?

Here’s what you need to consider and the process of applying for solar power for your business or development.

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Connecting your solar to the grid

How do you get the solar on your rooftop and inverter safely connected to the grid?

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What to look for in a reliable solar installer in Perth

Thinking about getting solar panels installed? A solar system is a long-term investment, and with so many solar companies out there it’s important you choose wisely.

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Solar FAQs

  • If my connection is shared, who needs to know I am applying to connect solar?
  • Conditions of approval to connect an inverter energy system
  • What do I need to know about technical diagrams for inverter energy systems?
  • Why does it matter if my connection is shared?
  • Is my connection a shared connection and what does that mean?

Before applying to connect this type of equipment, tenants or owners with shared connections should first seek permission from their strata company or management body to use a portion of the total network capacity allocated.

Failing to do this may prevent others from connecting their equipment, or require the management body to upgrade the connection to our network to accommodate the needs of all owners and or tenants.

It's important to remember that the strata company or management body is ultimately responsible for the management of the common connection to the network and the common...

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The terms used in these conditions have the same meaning as in the Electricity Networks Access Code 2004.

1. The approved inverter system must not be connected after the expiry date recorded on the approval.

2. Approval is void should the application details be subsequently found to be invalid.

3. All installations must:

  • Have Western Power approved import/export metering
  • Be installed as detailed in the approved application (including diagrams)
  • Have switches/breakers installed to legislative and network operator requirements

4. For new installations:

  • New...
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Single line diagram

A single line diagram (SLD) needs to contain information on the installation wiring from the point of supply off the Western Power network, through to all the inverters on site, including where the customer’s load is connected. 

It also needs to contain information on all protection devices and switches, as well as any communications required to achieve the desired operation of the system (i.e. self-consumption, export limit, etc.).

SLDs must use correct electrical symbols (as per Table J1 of AS/NZS 3000:2018) and should contain at least, but not limited to, the following...

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Your connection point has a fixed capacity. If it is shared with other customers, potentially multiple new systems could be added and exceed that capacity. This can make it unsafe and unreliable.

Shared connections must be managed to ensure that all customers have access to a safe and secure electricity supply as well as the opportunity to connect to benefit from renewable energy solutions.

Shopping centres, commercial tenancies, strata schemes and other grouped properties typically share a single connection point to our network that determines the total allocation of available electricity supply and generation capacity to be shared by all lots.

This connection point has a fixed capacity, so it's important for tenants, owners and prospective purchasers to be aware of the arrangements and obligations relating to the connection, as it may restrict their ability to install equipment such as home EV charging stations, rooftop solar panels and batteries.

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