NSW Apartment Battery Incentives: A Guide for Strata Committees

Since 1 September 2026, NSW has offered incentives for eligible apartment buildings that install a shared battery. The building needs at least four units, the shared battery must have between 20 and 200 kWh of usable capacity, and a larger incentive applies when qualifying new or additional solar is installed within the required period. For a strata committee, the real work is deciding whether a battery suits the building's common-property loads, sizing it sensibly and giving owners a clear proposal to vote on. This guide sets out how our team approaches each of those steps.

What qualifies, in plain terms

• An apartment building with at least 4 units.
• A shared battery with 20-200 kWh of usable capacity, rather than a battery for an individual apartment.
• A larger incentive when qualifying new or additional solar is also installed within the required period.
• Available from 1 September 2026, subject to the scheme's detailed rules.

We do not quote a dollar figure here, because the value for a particular building is calculated under the scheme's rules and can change. Check the current requirements on the NSW Government rebates and schemes page before the owners corporation signs anything, and ask any installer to show how they estimated the value for your building. Our NSW battery rebate guide explains how the household, VPP and apartment incentives differ.

What a shared battery actually runs

A shared battery sits behind the common-property meter, so it can only supply the loads on that meter. Those loads, rather than the number of apartments, determine how useful it will be.

Buildings with lifts, basement car parks and round-the-clock lighting usually have the evening and overnight load a battery needs. A small walk-up block with modest stair lighting may not use enough stored energy to justify 20 kWh or more.

Sizing within the 20-200 kWh range

Bigger is not automatically better. A battery earns its keep by charging from solar and discharging into loads the building would otherwise buy at higher rates. Capacity that is rarely cycled adds cost without adding savings. We size from:

1. Interval data for the common-property meter, showing how many kWh the building uses between late afternoon and the next morning.
2. Solar surplus, meaning how much an existing or planned array can spare after daytime common loads.
3. Power rating, so the inverter can meet lift and pump demands without heavy grid draw.
4. Tariff structure, including any demand charges on the common-property account.
5. Future loads, especially planned EV charging in the car park.

Always compare batteries on usable capacity. The incentive range is defined in usable kWh, and some specifications quote a larger nominal figure.

How the battery is run day to day

A shared battery is only as useful as its operating strategy, and that strategy should be written into the proposal. The usual building blocks are:

• Self-consumption: charge from surplus solar during the day and discharge into lighting, ventilation and pumps in the evening and overnight.
• Tariff awareness: if the common-property account has time-of-use pricing, avoid drawing from the grid in the most expensive periods.
• Demand limiting: where the account has demand charges, discharge to trim the building's highest periods of use.
• Backup reserve: keep a set share of capacity for outages if backup circuits are part of the design.

Ask for monitoring reports the committee can read, and plan a review after the first 12 months to adjust settings against real results.

Why the timing of solar matters

Because a larger incentive applies when qualifying new or additional solar is installed within the required period, the order of works matters. A building with no solar, or a small older array, should look at solar and storage together rather than installing a battery now and solar in a few years. One combined project can also share costs such as switch room work, cable routes, network applications and access equipment. Where roof space is limited, we confirm how much solar it can realistically hold before settling on battery size.

Practical questions for your building

• Where will the battery go? Car parks and plant rooms are common, but fire safety, ventilation, vehicle impact protection and access all need assessment.
• Can the slab or floor carry the weight of larger battery cabinets?
• Does the building want backup for selected common loads during outages? Life-safety systems have their own requirements and are designed separately.
• Who will receive monitoring alerts and deal with faults?
• Will the battery join a virtual power plant, and how much control would that give an operator?

We specify LFP battery systems from our commercial-capable range, which includes Sigenergy and GoodWe platforms, matched to the building's power needs, space and monitoring requirements.

From idea to a motion

1. Gather 12 months of common-property bills and request interval data from the retailer.
2. Commission a feasibility assessment covering loads, roof, solar, battery size and incentives.
3. Obtain comparable quotes based on the same scope.
4. Prepare the proposal and draft motions with your strata manager.
5. Put the proposal to a general meeting.
6. Once approved, the installer handles network applications, installation and incentive documentation.

Next steps

Our energy market lists an Apartment Building Shared Battery from $39,900 per building, installed and before incentives, and an NSW Apartment Battery Incentive Service from $990 per building covering eligibility, owners corporation documentation and solar timing. Both prices are indicative and confirmed after a site assessment. Blue Energy Solar is a New Energy Tech Approved Seller, which NSW strata funding requires. To start, request a quote and our team will review your common-property bills and inspect the switch room, car park and roof.

Frequently asked questions

Can individual apartment owners use this incentive for their own battery?

No. The apartment building incentive is for shared batteries serving the building, not batteries installed for individual units. An owner considering a battery for their own apartment faces different questions, including space, fire safety, access to solar and owners corporation approval for any work affecting common property. Household incentive rules are separate, so check the current federal and NSW positions before assuming any discount applies.

Does a shared battery reduce each owner's own electricity bill?

Not directly. The battery sits on the common-property meter, so it lowers the owners corporation's electricity costs, and owners benefit through the administrative fund and, over time, levy budgets. Individual apartment bills only change if a separate arrangement shares solar or storage with lots, which involves extra metering and agreements. Committees should explain this clearly so owners understand where the saving appears.

How long does a shared battery project take?

It varies with building size and approvals. The longest steps are usually winning owners corporation approval at a general meeting and receiving network approval for the connection, rather than the installation itself. Committees that gather bills and interval data early, obtain comparable quotes and schedule the motion for the next meeting avoid most delays. Because incentive rules can change, confirm current details before the vote.