Solar for WA apartments and strata buildings: what's actually possible

Most solar guides assume you own a standalone house. If you live in a Perth apartment, townhouse complex, or any property governed by a body corporate, the path to solar is different — but not necessarily closed off.

Why individual apartment owners can't install rooftop solar themselves

Solar panels fixed to the roof of a strata building are installed on common property — the shared areas owned collectively by all lot owners through the body corporate (also called strata company in WA under the Strata Titles Act 2018).

You cannot unilaterally install anything on common property without body corporate approval. This applies to rooftop solar panels, even if you own the unit directly below the roof.

This isn't a technical limitation — it's a legal one. Proceeding without approval would be an unauthorised use of common property, and you'd be required to remove the installation.

Option 1: body corporate solar (shared rooftop system)

The most impactful path is getting the body corporate to approve and install solar for the entire building.

How it works:

• The body corporate installs a solar system on the common property roof
• Generated electricity offsets common area electricity consumption (lifts, lighting, car park, pool pumps, common corridors)
• If the system is sized generously, surplus power can feed into individual lots through an embedded network arrangement (see option 3)
• Costs are shared across all lot owners through the sinking fund or a levy

How to propose it:

1. Raise it at the annual general meeting (AGM) — any lot owner can put an item on the agenda
2. Get three quotes from CEC-accredited commercial solar installers (strata buildings require commercial-scale installation experience)
3. Present the quotes with a payback analysis (common area electricity costs vs solar savings)
4. A simple majority vote is typically sufficient for common property solar that doesn't structurally alter the building

Typical economics: A Perth strata building with meaningful common area electricity use (lifts, pool, gym, car park lighting) can reduce body corporate levies or the building's common electricity costs significantly. The more common area consumption, the stronger the case.

WA-specific note: Under the WA Strata Titles Act 2018, lot owners can also apply for strata company by-laws to allow installation of solar on exclusive use areas (such as a private rooftop terrace attached to a top-floor apartment). If your lot includes exclusive use of a roof area, discuss this with a strata lawyer.

Option 2: tariff switching — what apartment owners can do right now

Regardless of what happens at the body corporate, individual apartment owners control their own Synergy account and can switch tariffs without body corporate approval.

If you're on A1 (flat rate) and your usage pattern suggests you'd save on Midday Saver — particularly if you work from home or run major appliances during the day — you can switch to Midday Saver at any time, for free, through My Synergy or by calling Synergy.

This won't deliver the same savings as a rooftop solar system, but it's a meaningful reduction for the right household. See our Midday Saver vs A1 comparison for how to calculate your break-even.

Option 3: embedded network solar

In buildings where the body corporate controls the electrical infrastructure, it's possible to install a building-level solar system that supplies individual apartments through an embedded network — effectively becoming a small electricity distributor within the building.

Under this model:

• The body corporate installs a large solar system on the roof
• Generated electricity is allocated to individual apartments during solar generation hours, reducing their bills
• Apartments buy any additional electricity from the grid through the embedded network operator (at a rate set by the operator, not Synergy directly)

Advantages: Apartments get the benefit of solar without each needing individual panels or Synergy accounts.

Complications: Running an embedded network requires compliance with the National Energy Retail Framework, which in WA involves registration with the Economic Regulation Authority (ERA). This is meaningful legal and administrative overhead — typically only viable for larger buildings with 20+ lots and a willing strata committee.

Small strata buildings (2–6 lots) with simpler electrical infrastructure may find the embedded network regulatory burden disproportionate to the benefit.

Option 4: shared equity solar (community solar)

Community solar schemes allow individuals to invest in a solar farm and receive credits on their electricity bill in proportion to their ownership share. This is more developed in eastern Australian states than in WA, and as of 2026, options for Synergy customers in Perth are limited.

This is worth keeping an eye on as the WA energy transition progresses — the WA government has shown interest in enabling more community energy models — but it's not yet a practical option for most Perth apartment owners.

Option 5: portable and balcony solar

Small portable solar panels (0.5–1kW) and dedicated balcony solar products have grown in popularity in Europe, particularly in Germany where "balcony power plants" are explicitly regulated and popular.

In Australia and WA specifically:

• There is no equivalent regulatory framework for small plug-in solar as of 2026
• Connecting a solar inverter to a standard power point without approval from Western Power and Synergy is technically not permitted under the network connection rules
• Some apartment owners do this anyway — but it creates legal ambiguity and potential insurance complications

If portable solar without grid feed-in (using it to charge devices directly from panels, not feeding into the grid) is your interest, this sidesteps the regulatory question — but the practical usefulness is limited.

What to do if you want solar but live in strata

Near-term (this quarter):

1. Switch Synergy tariff if Midday Saver would save you money — no approval needed
2. Analyse your bill on BillWise to see how much you could save on each tariff

Medium-term (this year): 3. Put body corporate rooftop solar on the agenda at the next AGM 4. Commission informal quotes from commercial solar installers to bring rough economics to the meeting 5. If you have exclusive-use rooftop access, consult a strata lawyer about the WA Strata Titles Act by-law pathway

Longer-term: 6. Monitor WA government policy on community solar and embedded network reform 7. When selling or buying, factor in the body corporate's existing solar status or appetite for it

The barriers to apartment solar in WA are real, but not permanent. Body corporate solar is the most practical near-term lever, and it benefits everyone in the building when it happens.

Strata rules in WA are governed by the Strata Titles Act 2018 and managed by Landgate. For specific advice about your building's by-laws, exclusive use areas, or the approval process for common property modifications, consult a licensed strata manager or strata lawyer. Embedded network requirements are subject to WA ERA regulatory guidance.