Australian households are facing persistent energy bill pressures despite recent slight reductions in Default Market Offer (DMO) prices. The good news is that accessing discounted green loans through the Household Energy Upgrades Fund (HEUF) is a powerful and immediate way to significantly reduce your energy costs. In 2026, you can secure loans with interest rates as low as 0% to 4% p.a. for essential home energy upgrades, potentially saving thousands annually on electricity and gas bills.

This guide will walk you through the HEUF, eligible upgrades, participating lenders, and how to leverage these programs to make your home more energy-efficient and affordable.

What is Australia’s Household Energy Upgrades Fund (HEUF)?

The Household Energy Upgrades Fund (HEUF) is a $1 billion initiative by the Clean Energy Finance Corporation (CEFC) designed to provide low-cost finance for energy performance improvements in Australian homes. Launched to help over 110,000 households lower their energy bills and reduce carbon footprints, the HEUF does not lend directly to consumers. Instead, the CEFC partners with Australian financial institutions, enabling them to offer discounted green finance products.

The HEUF specifically targets energy improvements to existing dwellings, but can also cover upgrades for knock-down rebuilds and even energy-efficient appliances purchased as part of a renovation.

“The $1 billion Household Energy Upgrades Fund (HEUF) is providing discounted consumer finance products to help households upgrade the energy performance of their homes.”

How Discounted Green Loans Work in 2026

Participating lenders receive support from the CEFC, allowing them to offer preferential interest rates, fee waivers, or other benefits on loans specifically for eligible energy-efficient upgrades. These ‘green loans’ are typically personal loans or sub-accounts linked to existing home loans.

Key Participating Lenders and Their Offers (May 2026):

| Lender | Loan Type | Key Features A Westpac Green Loan customer could get up to $50,000 interest free for five years to invest in energy-efficient upgrades to their home.

These loans are typically available for existing home loan customers and require the upgraded property to be the one securing the loan. Always confirm eligibility and specific terms with your chosen lender. For example, some offers might have property value limits (e.g., ING and Plenti have a $2.5 million limit).

Eligible Home Energy Upgrades

The HEUF supports a broad range of technologies aimed at reducing household emissions and improving energy efficiency. These include:

  • Solar PV systems and batteries: Investing in rooftop solar and a home battery can dramatically cut your reliance on grid electricity, especially during peak times. A typical 6.6kW solar system in Australia costs between $6,000 and $10,000 before rebates, while a 10-14kWh battery like a Tesla Powerwall 2 or BYD Battery-Box Premium can range from $10,000 to $18,000 installed. Remember to explore state-specific battery rebates like those in NSW which can significantly reduce upfront costs. For more details, see our guides: Your 2026 Guide: What Size Solar System Do I Need & How Much Will It Cost in Australia? and Home Battery Rebates Available in Australia 2026.
  • Solar hot water systems and heat pumps: Replacing an inefficient electric or gas hot water system with a solar or heat pump model (e.g., a Reclaim Energy Heat Pump or Sandens Eco Plus) can save hundreds of dollars annually. Heat pump systems typically cost between $3,500 and $6,000 installed, often with state-based rebates available.
  • Insulation and double-glazed windows: Improving your home’s thermal envelope with ceiling, wall, or underfloor insulation, or installing double-glazed windows (e.g., from Bradnam’s Windows & Doors or Stegbar) reduces the need for heating and cooling. These upgrades can cost several thousand dollars but offer long-term savings.
  • Energy-efficient air-conditioners and ceiling fans: Upgrading to high-star-rated reverse-cycle air conditioners (e.g., Daikin, Mitsubishi Electric, Fujitsu models with high EER/COP ratings) or installing efficient ceiling fans can drastically cut cooling and heating costs. For more, read: Best Energy-Efficient Home Heating: Slash Your 2026 Bills by Up To $2,000 Annually.
  • Electric Vehicle (EV) chargers: If you own an EV or plan to buy one, installing a home EV charger (e.g., Wallbox Pulsar Plus, Zappi, Tesla Wall Connector) can be covered. This makes charging more convenient and can be optimised with your solar system. See our guide: Best EV Home Chargers in Australia 2026: A Buyer’s Guide to Speed, Costs, and Smart Features.

The Current Energy Landscape: Why Act Now?

Australian households continue to grapple with high energy costs. While the Australian Energy Regulator (AER) and Victorian Essential Services Commission (ESC) have announced some reductions in the Default Market Offer (DMO) and Victorian Default Offer (VDO) for 2026-27, bills remain substantial.

  • Electricity Prices: For 2026-27, household standing offer time-of-use prices are set to fall by up to 10.7% across South Australia, New South Wales, and South East Queensland. Victoria’s VDO will see an average 5% cut for households, equating to roughly $84 off annual bills. However, average quarterly electricity bills across states still range from $433 (ACT) to $584 (Tasmania), according to Canstar’s May 2026 Pulse Survey. Two-person households can expect to pay $1,546 to $2,741 per year depending on their state and distribution zone.
  • Wholesale Market Trends: Record renewable generation and growing battery storage capacity are driving down wholesale electricity prices. The National Electricity Market (NEM) saw average spot prices of AU$50/MWh in Q4 2025, a 44% year-on-year decrease. Batteries are now frequently setting wholesale prices, displacing gas and hydro.
  • Gas Prices: Q1 2026 saw significant decreases in gas prices, with figures 14-23% lower than the same period in 2025.

Despite these positive shifts, grid electricity still comes with network charges and retailer mark-ups. Investing in your home’s energy efficiency and generation capacity provides a hedge against future price volatility and maximises savings. Full home electrification, including solar, battery, and EV, can save a typical Australian household around $4,300 per year.

Eligibility and Application Steps

To access a HEUF-backed discounted green loan, you generally need to meet criteria set by both the CEFC and the participating lender. Common requirements include:

  • Being over 18 years old.
  • An Australian citizen or permanent resident.
  • Owning (or purchasing) the home where upgrades will be made. Rental property owners and strata properties are also eligible.
  • The property value typically not exceeding $2.5 million (check with your lender).
  • Having a clear credit file and stable employment/income.
  • The upgrades must be installed by accredited professionals.

Steps to unlock your discounted green loan:

  1. Identify your upgrade needs: Determine which energy efficiency improvements will offer the greatest impact for your home and lifestyle. Consider a home energy assessment. Options range from solar and batteries to heat pumps and insulation.
  2. Obtain quotes from accredited installers: Get written quotes from at least three Clean Energy Council (CEC) accredited installers for solar and batteries, or other certified professionals for different upgrades. Ensure quotes detail eligible equipment and installation costs.
  3. Contact a participating HEUF lender: Speak to a bank like Westpac, CommBank, ING, Plenti, Brighte, Bank Australia, or Plico about their specific HEUF-backed green loan products, eligibility, and interest rates.
  4. Apply for the loan: Provide the necessary documentation, including your quotes, income details, and property information. The lender will assess your eligibility for both their green loan product and the HEUF discount.
  5. Complete the upgrade and enjoy savings: Once approved, proceed with the installation. Upon completion, ensure you have documentation for your lender to confirm the upgrade meets the HEUF requirements.

Stacking Rebates for Maximum Savings

HEUF-backed green loans can often be combined with existing state and federal rebates, further reducing your out-of-pocket expenses and accelerating your payback period. For example, the Cheaper Home Batteries Program (CHBP) continues until 2030 with a significantly expanded $7.2 billion budget, offering substantial support for home battery installations. Additionally, states like NSW, Victoria, and Queensland offer various concessions or bonuses that can be stacked.

Always confirm with your installer and lender which rebates you are eligible for and how they integrate with your green loan. The combination of HEUF finance and rebates makes significant energy upgrades more accessible than ever before.

Bottom Line

The Household Energy Upgrades Fund (HEUF) in 2026 presents a compelling opportunity for Australian homeowners to invest in energy-efficient upgrades with significantly discounted finance. With interest rates as low as 0% for up to five years on certain Westpac loans, or highly competitive rates from other HEUF partners, the financial barriers to improving your home’s energy performance are lower than ever. By leveraging these green loans alongside existing state and federal rebates, you can reduce your annual energy bills by hundreds, if not thousands, of dollars, increase your home’s comfort, and contribute to a more sustainable future. Don’t delay – explore your options with a participating lender today to lock in these savings.