NSW Businesses Could Save Up to 40% on Solar + Batteries From September 2026
- 5 days ago
- 4 min read
For New South Wales businesses considering commercial solar and battery storage, the financial case is about to become significantly more attractive.
From 1 September 2026, eligible NSW businesses can access a major new upfront discount on commercial battery installations through the NSW Government’s Peak Demand Reduction Scheme (PDRS).
Better still, businesses installing new or additional solar alongside their battery may qualify for a larger battery discount, while eligible projects may also be able to combine NSW support with applicable Australian Government solar and battery incentives.
For businesses looking to reduce electricity costs, manage peak demand and gain greater control over their energy use, now could be an ideal time to start planning an energy system upgrade.
How Much Can Your Business Save?
According to the NSW Government, eligible commercial projects may receive an upfront discount covering approximately 20% to 40% of battery installation costs, depending on the project.
The largest potential savings are available when a battery is paired with new or additional solar capacity.
Indicative savings:
🔋 Battery Only: Approximately 20% – 30% discount
☀️ + 🔋 Battery + New/Additional Solar: Approximately 30% – 40% discount
The actual value will depend on factors including battery capacity, system design, installation requirements and the Accredited Certificate Provider (ACP) delivering the incentive.
NSW Government examples indicate that a small commercial business such as a grocery store could potentially receive around $37,000 in battery support, while a larger project such as a dairy farm could potentially receive around $355,000.
These figures are illustrative examples and should not be considered guaranteed rebate amounts.
Why Installing Solar + Battery Together Matters
Businesses don't necessarily need to install solar to access the standard battery incentive. However, combining a battery with qualifying new or additional solar can increase the available support.
To qualify for the higher solar-linked battery incentive, two important requirements apply:
1. The 90-Day Window
Qualifying new or additional solar capacity must generally be installed within 90 days before or after the battery installation.
2. The Solar-to-Battery Ratio
New solar PV capacity needs to meet the required ratio relative to the battery's usable capacity.
For example, a business installing a 100 kWh battery would need at least 25 kW of qualifying new or additional solar capacity to meet the 1 kW of solar per 4 kWh of usable battery capacity ratio.
This also creates an opportunity for businesses that already have solar. Rather than replacing the existing system, qualifying businesses may be able to expand their solar capacity while installing battery storage, subject to the scheme's eligibility requirements.
BESS4 vs. BESS5: Where Does Your Business Fit?
The commercial battery incentive includes different pathways depending on the size of the proposed battery system.
BESS4 – Small to Medium Commercial
BESS4 covers battery systems with a usable capacity between 20 kWh and 200 kWh.
This pathway includes specific equipment, installer and scheme requirements and is designed for smaller commercial energy storage projects.
BESS5 – Large Commercial & Industrial
BESS5 covers significantly larger battery systems, ranging from 200 kWh up to 30 MWh.
This pathway is designed for larger commercial, agricultural and industrial energy users and carries additional technical, safety and compliance requirements.
Because requirements vary according to system size and application, businesses should have their site, electricity consumption and infrastructure properly assessed before selecting a battery.
How Does the Upfront Discount Work?
One of the advantages of the PDRS incentive is that eligible discounts are designed to reduce the upfront cost of installing a commercial battery rather than requiring businesses to wait for a traditional cashback rebate.
Participating Accredited Certificate Providers can create Peak Reduction Certificates (PRCs) from eligible installations.
Because qualifying battery systems paired with new or additional solar can provide greater peak-demand reduction benefits, these projects may generate greater incentive value helping reduce the business's upfront investment.
Why Equipment and System Design Matter
Commercial solar and battery installations aren't simply about choosing the biggest battery or chasing the largest available incentive.
The system needs to work with the property's:
Electricity consumption
Peak demand
Operating hours
Existing solar system
Available roof space
Switchboard and electrical infrastructure
Future energy requirements
Equipment must also meet the applicable technical and program requirements.
At DSW Energy, we work with established solar and battery technologies from brands including SolaX, Sungrow, GoodWe and Sigenergy, while designing systems around the individual requirements of each commercial property.
The goal isn't simply to qualify for an incentive. It's to build an energy system that continues delivering value after the upfront discount has been applied.
Why Battery Storage Makes Sense for Businesses
A well-designed commercial solar and battery system can help businesses:
Reduce peak electricity demand
Stored energy can be used during high-demand periods, helping reduce reliance on expensive grid electricity.
Use more solar on-site
Instead of exporting excess daytime solar generation, businesses can store that energy for use later.
Lower ongoing electricity costs
Using stored solar energy can reduce the amount of electricity purchased from the grid.
Improve energy resilience
Depending on the system configuration, battery backup can help support essential operations during electricity outages.
Prepare for future energy requirements
Businesses adding EV chargers, electric equipment or expanding their operations may benefit from having additional solar generation and storage capacity available.
Don't Choose a System Based on the Discount Alone
A 30% or 40% discount sounds attractive, but the biggest possible rebate doesn't automatically mean the best possible investment.
An oversized battery that isn't properly utilised can undermine the project's financial performance. Likewise, adding unnecessary solar capacity simply to reach a higher incentive tier may not deliver the best long-term outcome.
Commercial systems should instead be designed around actual interval data, electricity consumption, peak demand and expected future requirements.
That's where a proper commercial energy assessment becomes important.
Start Planning Your Commercial Solar + Battery Project
The new NSW commercial battery incentives are scheduled to commence on 1 September 2026.
Commercial solar and battery projects can require site assessments, system engineering, grid connection applications, equipment selection and installation planning. Starting the process early can help businesses understand their eligibility and determine which system configuration offers the strongest long-term value.
At DSW Energy, we can assess your commercial energy requirements and design a solar and battery solution tailored to your property, electricity consumption and future plans.
Whether you're installing your first commercial solar system, adding battery storage or expanding an existing solar installation, we'll help you understand your options and build a system designed for your business.
Ready to find out what commercial solar and battery incentives could mean for your business?
Contact DSW Energy today for a tailored commercial solar and battery assessment.
