Sydney, NSW – From today, September 7, 2026, new rules under the New South Wales Energy Savings Scheme (ESS) come into effect, expanding eligibility for energy-efficient upgrades across homes and businesses. These changes, gazetted on August 31, 2026, are designed to boost energy efficiency and offer fresh avenues for bill reduction for a wider range of consumers.

The amendments are part of the broader Energy Security Safeguard and primarily focus on key areas such as air conditioning, commercial heat pump water heaters, and the operational lifetime of liquid chilling packages. This move by the NSW government aims to accelerate the adoption of more efficient technologies, helping both individuals and organisations manage their energy consumption and associated costs.

What the New Rules Mean for Your Energy Bills

The Energy Savings Scheme, established in 2009 under the NSW Electricity Supply Act 1995, is the state’s largest energy-efficiency program. Its core objective is to incentivise households and businesses to reduce electricity and gas consumption by undertaking eligible energy-saving activities. By generating Energy Savings Certificates (ESCs), which can be sold to energy retailers, participants effectively receive a discount on their upgrades.

The latest rule changes directly impact the types of activities and equipment eligible for these valuable incentives. Key updates include:

  • Expanded Air Conditioner Eligibility: Multi-split system and large air conditioners now have broadened eligibility criteria under Activity Definition F4. This means more households and businesses considering new or replacement air conditioning units could qualify for discounts.
  • Commercial Heat Pump Water Heaters: New provisions specifically address commercial heat pump water heaters, opening up significant savings opportunities for businesses looking to upgrade their hot water systems with more efficient technology. This aligns with a broader national push towards electrification for hot water generation.
  • Lifetime of Liquid Chilling Packages: Adjustments have been made to the recognised lifetime of liquid chilling packages, which are crucial components in many commercial and industrial cooling systems. This change can impact the calculation of energy savings and, consequently, the value of ESCs generated for these installations.
  • Air Conditioner Activity Co-payments: Minor administrative changes also affect minimum customer co-payments for air conditioning activities, aiming to refine the financial incentives for participants.

These adjustments are critical for consumers and businesses navigating the complexities of energy upgrades. By expanding eligibility and refining the scheme’s parameters, the NSW government is making it easier for more participants to access financial support for investments that ultimately reduce their long-term energy bills. The scheme is set to run until 2050, aligning with the state’s net-zero emissions targets.

“The current Energy Savings Scheme Rule is in effect from 7 September 2026,” states the NSW Climate and Energy Action website, highlighting the immediate impact of these updated regulations.

Accessing the Enhanced Savings

For households and businesses in NSW, these rule changes present an opportunity to reassess planned or deferred energy efficiency upgrades. For example, the inclusion of commercial heat pump water heaters means that businesses can now benefit from incentives to install technology that significantly reduces hot water energy consumption. Homeowners considering a new air conditioning system should also investigate the updated eligibility criteria. These types of upgrades can contribute substantially to overall bill reductions, especially when paired with other smart energy management strategies.

While the ESS directly provides incentives for specific upgrades, it’s also important to consider the broader energy landscape. Regulated electricity prices, such as the Default Market Offer (DMO) in NSW, saw falls of between 3.4% and 7.7% for residential customers and between 9.0% and 20.9% for small businesses from July 1, 2026. Combining these baseline price reductions with active energy efficiency measures, like those supported by the ESS, can lead to more substantial and sustained savings.

To take advantage of these new rules, individuals and businesses should consult with Accredited Certificate Providers (ACPs) under the ESS. These providers can assess eligibility for specific upgrades and facilitate the process of claiming discounts or generating ESCs. Further information and detailed guidelines are available on the NSW Climate and Energy Action website. For those considering heat pump hot water systems, understanding rebates and costs is crucial. You can find more information in our guide: Switching to a Heat Pump Hot Water System in 2026: Your $2,700+ Rebate & Cost Guide.

Effective energy management extends beyond individual upgrades. Integrating smart home energy management systems can further amplify savings by optimising energy use throughout the day. Explore how these systems can cut your bills: Best Home Energy Management Systems in Australia 2026: Slash Bills by $1,000+ Annually.