Australia’s energy bills continue to challenge households, making every opportunity to improve home efficiency critical. In 2026, with electricity prices seeing varied changes – a projected fall for most in NSW and SE QLD, a modest rise in SA, and an average 5% decrease in Victoria’s Default Offer – and gas prices generally increasing, optimising your home’s thermal performance is more important than ever.
Your windows are a major culprit for energy loss, accounting for up to 40% of heating energy lost in winter and almost 90% of heat gained in summer. Investing in the right window coverings can significantly reduce your reliance on heating and cooling systems, translating into hundreds of dollars in annual savings. For example, well-chosen external awnings alone can cut cooling costs by up to 25%, saving Australian homeowners an estimated $150 to $400 per year.
This guide outlines the best energy-efficient window coverings available in Australia in 2026, detailing their costs, benefits, and how they can help you slash your energy bills.
Top Energy-Efficient Window Coverings for Australian Homes
1. Cellular (Honeycomb) Blinds
What they are: Often considered the most energy-efficient internal window covering, cellular blinds feature a unique honeycomb structure that traps air, creating an insulating barrier. This design is highly effective at reducing heat transfer, mimicking the effect of double-glazed windows.
Energy Efficiency: Excellent. They can reduce heat transfer by up to 80%, keeping your home cooler in summer and warmer in winter.
Indicative 2026 Cost (installed): Expect to pay between $180 and $600 per window, with energy-efficient models typically in the $200 to $400 range for standard sizes. Brands like Luxaflex Duette are popular choices in Australia.
Pros: Superior insulation, wide range of colours and opacities, sleek aesthetic, can be motorised for smart home integration. Cons: Can be more expensive upfront than basic blinds, internal placement means they absorb some heat before reflecting.
2. Thermal and Blockout Curtains
What they are: These curtains are made from heavy, tightly woven fabrics, often with multiple layers or a special thermal lining (like a light-coloured ‘block out’ backing). For maximum effectiveness, they should be floor-to-ceiling, wrap around the window frame to the wall, and include a pelmet at the top to prevent air circulation and heat loss.
Energy Efficiency: Very good, especially when properly installed with pelmets. They create a significant insulating layer, blocking heat in summer and trapping warmth in winter.
Indicative 2026 Cost (supply only): Ready-made thermal or blockout curtain pairs can start from $39 to $120 from retailers like Spotlight. Custom-made options, such as those from 3HLinen or CurtainsClick, range from $204 to over $500 per window, depending on fabric and size.
Pros: Cost-effective, wide variety of styles, can be layered with other coverings for enhanced performance. Cons: Less effective if not fitted snugly with pelmets, can block natural light entirely if always closed.
3. External Roller Shutters
What they are: Mounted on the exterior of your home, these shutters consist of interlocking slats (typically aluminium) that roll down to cover the window. They offer excellent security, privacy, and superior thermal insulation by creating an air gap between the shutter and the window.
Energy Efficiency: Excellent. External shutters are highly effective at blocking solar heat gain before it enters the home in summer and preventing heat loss in winter. They also offer significant noise reduction.
Indicative 2026 Cost (installed): For a standard window, expect to pay between $1,000 and $2,000. Manual operation is generally more affordable, ranging from $800-$1,200 per window, while electric or battery-powered options are typically $1,200-$1,600 per window. Aluminium slats with thermal insulation can add 15-30% to the cost. Motorised options add around $280-$550 for the motor plus electrician costs.
Pros: Superior thermal performance, enhanced security, privacy, noise reduction, protection from extreme weather. Cons: High upfront cost, can alter external appearance, may require professional installation with electrical wiring for motorised versions.
4. External Awnings
What they are: Awnings extend outwards from your home, primarily designed to shade windows and outdoor areas from direct sunlight. They come in various styles, including fixed, retractable, and folding arm awnings.
Energy Efficiency: Excellent for summer cooling. Awnings can block up to 77% of solar heat gain on west-facing windows and 65% on south-facing windows, significantly reducing the need for air conditioning.
Indicative 2026 Cost (installed): Basic fixed awnings start from $300-$500 per window. Retractable manual awnings range from $1,000-$3,000, while motorised options can cost $2,000-$8,000+. A popular mid-range motorised folding arm awning (3-5m wide with a quality Somfy or Rollease motor and premium acrylic fabric) typically costs $2,400-$3,800 installed in Melbourne.
Pros: Highly effective for summer heat rejection, can extend outdoor living spaces, adds aesthetic appeal, retractable options offer flexibility. Cons: Less effective for winter heating, can be costly for large or motorised systems, requires external installation.
5. Window Films (Tinting)
What they are: Thin, transparent or tinted films applied directly to existing window glass. Various types are available, including solar control films (for heat rejection) and Low-E (low-emissivity) films (for year-round insulation).
Energy Efficiency: Good, offering a cost-effective alternative to full window replacement. Low-E films can bring single-pane windows close to double-pane performance.
Indicative 2026 Cost (installed): Solar control films start from $85-$130 per square metre. Year-round insulating Low-E films are more expensive, typically $210-$285 per square metre.
Pros: Relatively inexpensive compared to double glazing, quick to install, reduces UV fading of furnishings, maintains natural light (depending on film type). Cons: May not offer the same level of insulation as cellular blinds or external shutters, can be difficult to remove without damage, limited aesthetic impact.
6. Plantation Shutters
What they are: Internal shutters with adjustable louvres, available in materials like PVC, timber, or aluminium. They offer a classic aesthetic and good light control.
Energy Efficiency: Moderate to good. When tightly fitted with a frame and seals, they create an insulating air pocket. The material and colour can also influence performance (e.g., darker colours absorb more heat in winter).
Indicative 2026 Cost (installed): Plantation shutters typically range from $800 to $1,500+ per window. PVC options are generally $300-$600 per square metre, while timber or engineered wood can be $400-$800 per square metre.
Pros: Durable, stylish, excellent light and privacy control, long lifespan. Cons: Higher upfront cost, less insulating than cellular blinds or external shutters, louvres can allow some air leakage if not tightly closed.
Comparing Energy-Efficient Window Coverings (2026)
| Covering Type | Indicative 2026 Cost (per window/m²) | Primary Benefit | Energy Saving Potential | Pros | Cons |
|---|---|---|---|---|---|
| Cellular Blinds | $180 - $600 per window | Year-round insulation | High (up to 80% heat transfer reduction) | Excellent insulation, sleek, versatile, motorisation option | Higher cost than basic blinds, internal (some heat absorbed) |
| Thermal Curtains | $39 - $500+ per window/pair | Year-round insulation | Medium-High | Cost-effective, wide styles, layering potential | Less effective if not fitted/pelmetted, can block light |
| External Roller Shutters | $1,000 - $2,000 per window | Year-round insulation, security | Very High | Superior thermal block, security, noise reduction | High upfront cost, aesthetic impact, external installation |
| External Awnings | $300 - $8,000+ per window | Summer heat rejection | High (up to 77% solar block) | Excellent for cooling, extends outdoor space, flexible | Less winter benefit, can be costly for motorised, external |
| Window Films | $85 - $285 per m² | Cost-effective heat control | Medium-High | Affordable, quick install, UV protection | Less insulation than other options, can be hard to remove |
| Plantation Shutters | $800 - $1,500+ per window | Light control, moderate insulation | Medium | Durable, stylish, good light/privacy control | Higher cost, can have air gaps, less insulating than top options |
Maximising Your Savings: Beyond Window Coverings
While energy-efficient window coverings are a smart investment, a holistic approach to home energy efficiency yields the greatest savings. Consider these complementary strategies:
- Home Insulation: Pairing your window coverings with effective ceiling, wall, and floor insulation is crucial. Explore state rebates and the best materials in our guide: Slash Your Winter Bills by Up To $800: Best Home Insulation Upgrades & 2026 State Rebates
- Draught Proofing: Seal gaps around windows and doors to prevent conditioned air from escaping. This is a low-cost, high-impact improvement.
- Smart Home Energy Management: Integrate motorised window coverings with smart home systems to automate their operation based on temperature, sunlight, or time of day, optimising energy use without manual intervention. Learn more in our guide: Smart Home Energy Systems: Slash Your 2026 Australian Electricity Bills by Up To 30%
- Energy Bill Relief: Be aware that the federal Energy Bill Relief Fund ended in December 2025. However, state-based concessions and general energy bill support remain available for eligible households. For comprehensive information, consult: Navigating Australia’s Energy Bill Relief and Support in 2026: A Comprehensive Guide
The Australian Energy Regulator (AER) has confirmed that Default Market Offer (DMO) prices for 2026-27 will fall for most residential customers in NSW and SE QLD, while South Australia will see a modest increase. In Victoria, the Default Offer will decrease by an average of 5%.
Rebates and Incentives in 2026
Direct government rebates specifically for window coverings are rare across Australian states in 2026. Most energy efficiency schemes focus on larger upgrades like insulation, solar panels, or efficient hot water systems. However, it is always worth checking your state’s energy department websites (e.g., Victorian Energy Upgrades, NSW Energy Savings Scheme) for any new or updated programs, as these can change. Some retailers or manufacturers may offer their own promotions, so enquire directly when seeking quotes.
Choosing the Right Covering for Your Home
The best energy-efficient window covering for your home depends on several factors:
- Climate Zone: In hot climates, external shading (awnings, roller shutters) is paramount. In colder climates, internal insulation (cellular blinds, thermal curtains) is key for heat retention.
- Window Orientation: North and west-facing windows benefit most from external shading to block intense summer sun. South and east-facing windows may benefit from internal insulation in winter.
- Budget: Costs vary significantly. Consider the long-term energy savings against the upfront investment.
- Aesthetics and Functionality: Balance energy performance with your home’s style and your need for light, privacy, and ease of operation (manual vs. motorised).
- Professional Installation: For optimal performance, especially with cellular blinds, roller shutters, and awnings, professional measurement and installation are crucial to minimise gaps and ensure proper function.
Bottom Line
Investing in energy-efficient window coverings is a pragmatic step towards reducing your annual heating and cooling bills in Australia. While the initial outlay can vary from a few hundred dollars for quality thermal curtains to several thousands for external roller shutters or motorised awnings, the consistent savings on your energy bills, coupled with improved indoor comfort, offer a strong return on investment. For superior year-round performance, cellular (honeycomb) blinds and external roller shutters stand out. For targeted summer cooling, external awnings are exceptionally effective. Always seek multiple quotes and consider the long-term benefits to make the best choice for your Australian home in 2026.