Energy Efficiency

Smarter shading for a more sustainable future.

Understand how shading solutions support thermal efficiency and long-term energy performance.

Shading System

Designing for Efficiency

From reducing heat gain in summer to preventing heat loss in winter, shading systems offer real performance benefits. Window shading is more than just decorative. Window shades play a critical role in energy conservation across both residential and commercial buildings.

This page outlines the key ways shading contributes to energy efficiency, why architects and homeowners are embracing these systems, and how WSAA is supporting innovation and sustainability across the industry.

Energy Savings for Homes

Window shades do more than enhance the appearance of your home, they help regulate temperature, reduce reliance on artificial heating and cooling, and save money on energy bills.

Winter Benefits

In cooler months, window shading can act as an additional layer of insulation. They reduce heat loss through glazing, maintain a warmer indoor environment, and help lower heating costs. Reflective roller blinds and curtains have been shown in studies to decrease heat loss through single-glazed windows by as much as 40%.

Even with modern glazing, blinds and shutters can further improve insulation performance by lowering the U-value (the measure of heat transfer through a material).

Summer Benefits

As temperatures rise, so too does the strain on air conditioning. Window shading can prevent excessive heat gain, especially when installed externally, by blocking or reflecting solar radiation before it enters the home. Internally, blinds and shutters with reflective backings can also reduce solar penetration.

Reducing the g-value (solar heat transmittance) of windows leads to measurable improvements in energy efficiency. Lower g-values mean less heat enters the home — keeping interiors cooler and reducing air conditioning demand.

For optimal performance, automated systems using temperature sensors can adjust blinds and awnings throughout the day, maintaining comfort while maximising savings.

Key energy-saving features:

01.

Thick or honeycomb-style fabrics

02.

Reflective coatings

03.

Cassette-mounted or pelmet-enclosed systems

04.

Timber or composite internal shutters

05 .

Well-fitted external shutters

Smart Solar Control for Buildings

A holistic approach to improving energy performance.

While older buildings may consume large amounts of energy to maintain comfort, even modern, highly insulated structures are prone to overheating.

Dynamic solar control through the use of internal and external shading helps address both challenges.

The International Energy Agency (IEA) recognises dynamic exterior shading as a key feature in energy-efficient building envelopes. Automation and solar-responsive design have been identified as high-return technologies in achieving future energy goals.

Effective Shading Strategies:

01.

External shading prevents heat from reaching glazing in summer.

02.

Internal shading (especially with reflective coatings) contributes to both cooling and insulation.

03.

Insulated or cellular shades add thermal resistance.

04.

Closed shutters and blinds retain warmth during cooler nights.

05.

Automated systems maximise performance with minimal occupant intervention.

With thanks to the British Blind and Shutter Association (BBSA) for their contribution to this section.

Global Shading Day

Global Shading Day is an international initiative dedicated to promoting solar shading as a critical tool in reducing energy consumption and improving building comfort.

An Expanding Global Initiative

Since launching in 2023, Global Shading Day has gained momentum across Europe and Australia, highlighting passive cooling as a sustainable alternative to mechanical systems. Each year, governments, architects, builders and industry bodies rally to raise awareness of the benefits of solar shading.

How WSAA Supports the Movement

WSAA actively supports Global Shading Day by amplifying key messages across its member network, media platforms and social channels. Look out for campaigns under the hashtag #GlobalShadingDay.

The official website – www.globalshadingday.com – provides detailed information on the event, along with practical guidance for individuals and organisations wanting to take part.

Key energy-saving features:

01.

Thick or honeycomb-style fabrics

02.

Reflective coatings

03.

Cassette-mounted or pelmet-enclosed systems

04.

Timber or composite internal shutters

05 .

Well-fitted external shutters

Operation Schedule

For a more energy efficient home, schedule the operation of your window and sun shades.

Window shadings and outdoor sun shades can be very effective at making a home more energy efficient, as they shade and blockout the sun in summer and insulate from the cold in winter.

WincovER helps to compare the energy efficiency of the various types of window shadings.  However, to benefit the most from your window shadings and outdoor shades, it is important to open and close them at times when they will provide maximum benefit.

Use the Schedule of Operation tool below to find the ideal local times to open and close your window shadings and outdoor shades. The recommendations are based on the local conditions in your area of Australia.

Simply enter your postcode and click Continue.

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Energy Efficiency Guidelines

Whether you're building a new home or improving an existing one, window orientation, and shading placement all play a vital role in passive design. These guidelines help you choose suitable products and apply practical strategies that maximise natural light and reduce energy use.

01.

Orient living spaces to the north for winter sun.

02.

Use adjustable shades to block summer heat.

03.

Select lighter-coloured external shades to reflect solar radiation.

04.

Ensure window shadings are recessed or paired with pelmets for insulation.

05.

Pair high-performance glass with energy-rated coverings.