How to Make Your Home More Efficient & Sustainable
Slash Your Power Bills and Save the Planet? Here's How to Make Your Home MOre Efficient & Sustainable.
High energy bills. Rising living costs. A growing sense that we should all be doing more to live sustainably.
Sound familiar? You're not alone.
Whether you're a homeowner trying to rein in the power bills or a landlord wanting to offer better value to tenants, making your home more efficient isn't only about saving the planet.
It’s about creating a home that costs less to run, feels better to live in and becomes more valuable over time.
But here’s the biggest problem: many people don’t quite know where to start, or wonder whether the upgrades will ever pay off.
The good news? You don’t have to go fully off-grid or break the bank to make meaningful changes.
Some of the highest-impact home upgrades are surprisingly accessible - and pay for themselves faster than you’d think.
In this guide, we’ll break down the best upgrades you can make, show you how to get started and explain why now’s the time to future-proof your home - for your wallet, your wellbeing, and your property's long-term worth.
What you’ll learn:
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Why Are Energy-Efficient Homes So Important in 2025?
Let’s start with the big picture.
Energy prices aren’t just high - in 2025, they’re unpredictable!
And while solar systems and energy-saving technology have become more accessible, many South Australians don’t know what works or what’s worth the investment and who to trust..
But here's the reality: buyers and renters are paying attention.
“We’re seeing a clear shift - people are asking about running costs and energy ratings at open homes now. It used to be about layout and location only. That’s changed,” says Kate Barnett, Director at We Connect Property.
Homes with solar panels, efficient heating and cooling, proper insulation or even basic energy-efficient lighting are often snapped up faster.
And for landlords, the benefits are just as real.
Energy-efficient properties tend to attract better, longer-term tenants who value comfort and low costs, reducing vacancy rates over time.
Top 5 Best High Impact, Energy Efficient Upgrades for Homes
Despite common myths and misconceptions, sustainable upgrades consistently deliver comfort, savings and appeal.
Here, we run through the highest-impact enhancements you can make. We've also estimated ROI or payback time for each, to help you decide what’s right for your budget.
1. Solar Panels
Solar power has come a long way. Rebates have made it more affordable, and most systems now pay for themselves in 6 - 8 years - sometimes sooner depending on household usage and feed-in tariffs.
- Estimated savings: $800 - $1,600 per year on average in SA.
- Battery storage can add further independence and greater savings but is a longer-term investment and not essential to see a return.
“For many homeowners, solar is the single best upgrade in terms of cost savings and resale appeal,” says Kate. “Buyers love to see it - especially with power bills constantly on the rise.”
2. Insulation and Draft-Proofing
Good wall and ceiling insulation isn’t glamorous - but it works.
In fact, some studies show it can slash energy loss by up to 40%, and cut heating and cooling costs by up to 30%!
Plus, payback time is often under five years.
Simple steps like sealing windows, adding door snakes and using heavy curtains can also make a surprising difference in both comfort and cost.
Often overlooked, insulation is an upgrade that usually delivers strong ROI.
3. Energy-Efficient Appliances and LED Lighting
Old fridges, power-hungry halogen globes, ancient or inefficient reverse-cycle units can silently drain hundreds of dollars’ worth of energy each year.
Swapping to energy-efficient whitegoods and LEDs is a quick win, reducing lighting costs by up to 85%.
Another way to see immediate savings? Swap old appliances for 4 - 5 Star Energy Rating models.
These things aren’t as exciting as solar, but they reduce consumption instantly, require no lifestyle adjustment and often achieve strong ROI in under 2 - 4 years, depending on use.
4. Water-Saving Features That Make a Real Difference
In a drought-prone country like Australia, water is literally like liquid gold.
Rainwater tanks, low-flow showerheads, dual-flush toilets and native landscaping can all reduce your water use dramatically.
"Even a small rainwater tank that’s plumbed into your toilets or garden can have a significant impact on your quarterly water bills, especially in summer-heavy households," says Kate.
Especially effective in hot locations or garden-proud households, payback time on these smaller investments is usually around 2 - 5 years, depending on household size and usage.
5. Smart Systems to Make Sustainability Simple
What do we mean by ‘smart systems’? We’re talking things like smart thermostats, timers for hot water systems and lighting or power sensors to help automate your energy savings.
They're increasingly affordable and easy to integrate with existing systems.
And the best bit is, you don’t need to be tech-savvy to use them – most have been designed to integrate simply into your normal routine.
Look for reputable brands and have them installed by a professional (where necessary), and you can expect to see $200 - $400 in annual electricity cost savings.
How Do I Claim Government Energy Rebates & Incentives in South Australia?
We totally get it - understanding rebates can feel like reading a contract in a foreign language (complete with fine print!).
And to add to the confusion, every state has different eligibility rules, paperwork and wait times.
But simply popping them in the ‘too hard basket’ could see you miss out on thousands of dollars in savings - especially in an era where state and federal governments are all focusing on environmental proactivity.
And South Australia is no different - homeowners and landlords currently have access to several rebate schemes, covering things like solar, battery storage and energy efficiency audits.
But even knowing where to start can feel overwhelming.
Here are just a few of the energy rebates and incentives currently on offer in South Australia:
- Small-scale Technology Certificates (STCs) – part of the national Renewable Energy Target, which can significantly reduce the upfront cost of solar panel systems.
- SA Energy Concessions – credits for low-income households to help reduce the financial pressure of utility bills.
- Retailer Energy Productivity Scheme (REPS) – an incentive for households and businesses to reduce energy consumption and lower bills by actively upgrading things like heating and cooling systems, insulation and appliances.
- No-interest loans or buy-now-pay-later options through approved solar and sustainability providers.
“Too often, people either give up before applying or delay upgrades for years because the process looks hard,” says Kate.
“Plus, rebates tend to change regularly. The trick is acting swiftly when an opportunity aligns with your plans.”
Here are some handy tips to find a South Australian energy-related rebate or deal that works for you:
- Jump onto trustworthy comparison websites like Energy Made Easy to find out what switches might be available to maximise energy bill savings.
- Visit www.energy.gov.au and www.sa.gov.au/energy to check current energy rebate options and see what you're eligible for in SA.
- Choose certified installers who handle the paperwork and rebate submissions on your behalf, and ask if they are Clean Energy Council accredited. Either way, always double check eligibility before booking the work.
- Download a free “Rebate Readiness Checklist” to track your eligibility and prepare documents in advance.
Why Should Landlords Invest in Energy-Efficient Upgrades For Their Rental?
Eco-friendly upgrades might not seem like a landlord’s top priority - but they’re fast becoming a smart financial strategy to protect against rising costs, evolving tenant preferences and looming regulation.
While South Australia has yet to enforce mandatory minimum energy efficiency standards for rentals, the trend is clear.
Victoria and the ACT have already introduced them, so it’s only a matter of time for our state, that prides itself on its green credentials.
“Being proactive now means avoiding inflated prices when compliance becomes mandatory,” Kate explains.
But there is an upside to getting ahead of the curve when it comes to sustainable upgrades in your rental, including:
- Tenant appeal: Energy-efficient rentals often attract better-quality tenants - those who care for the home and tend to stay longer because the bills are lower.
- Reduced vacancy: Less turnover = fewer vacancy periods and lower re-letting costs.
- Stronger yield: Some renters are willing to pay slightly more in return for lower ongoing costs, particularly families and professionals conscious of energy bills.
- Tax deductions: Upgrades like insulation, solar and efficient appliances are often depreciable over time.
- Future value: A property that is equipped with eco-friendly features tends to stand out against properties that lack in this area, adding extra value to any eventual sale.
It also helps set your property apart for tenants in the face of a tightening rental market and cost-of-living crisis.
As renters become more conscious of running costs, properties without efficiency features will be less competitive.
“Energy upgrades aren’t just feel-good-nice-to-haves,” Kate adds.
“They’re about creating a rental that tenants actually want to stay in, and one that will appreciate in value down the track.”
Do Energy-Efficient Features Help Homes Sell Faster and for More Money?
When it comes to resale, smart buyers are no longer just looking at bedrooms, floorplans and backyard space.
They’re asking about things like running costs and energy ratings, making sustainable elements no longer a bonus - they’re often a deal-breaker too.
Homes with eco-friendly or efficient features like:
- Solar panels
- High-efficiency reverse-cycle heating and cooling
- Insulated roofs and walls
- Double glazing
- LED lighting and smart energy systems
- Automatic watering systems and rainwater tanks
... stand out in a crowded market. Not only can these features shorten days on market, they can usually justify a higher price too.
“We’ve had buyers walk into a home and immediately ask what the quarterly energy bills are,” says Kate.
“It’s a growing trend - but one that only seems to be gaining momentum; homes that offer efficiency and an eco-friendly edge often sell faster, and for more.”
In fact, according to Domain’s 2024 Sustainability Report, homes with solar panels sold up to 20% faster and had a 3 - 5% higher median sale price in some metro areas compared to non-sustainable counterparts.
This trend is even more pronounced in family-oriented suburbs where utility costs weigh heavily in purchase decisions.
It’s about emotional connection, too.
A well-insulated, home that’s cooler in summer and warmer in winter – but that also has lower utility bills – just feels like a better place to live.
And this often translates into a buyer's willingness to pay more, or move faster to secure it.
What’s the Best Step-by-Step Plan to Make Your Home Sustainable on a Budget?
While building efficiency and sustainability into your property may seem overwhelming (and expensive!), it needn’t be.
So let’s keep it simple, and break some actionable points down into an easy, 4-step plan:
Stage 1: Planning
- Start with a free or low-cost energy audit. Many local providers, like SA Energy Partners, offer a service that can help you identify your home’s biggest efficiency leaks.
Stage 2: Quick Wins
- Swap traditional bulbs for LEDs
- Use draft stoppers
- Set heating/cooling timers
- Install tap aerators and water-saving showerheads
- Use power boards with switches that cut power to multiple devices, reducing inefficient standby drain
Stage 3: High-ROI Structural Upgrades
- Insulate ceiling and walls
- Add solar panels
- Upgrade to energy-efficient appliances
- Install water saving features like automatic watering systems in the garden
Stage 4: Smart Optimisation
- Add smart thermostats or power sensors
- Consider battery storage (if viable)
- Monitor and manage usage with apps
Remember, not everything has to happen at once. Make a plan for this year, next year and the one after.
Even the smallest improvements mean you’re ahead of where you were yesterday.
And don’t forget to leverage expert help when you need it. Your real estate agent, agent, builder or property advisor can help you understand what adds value in your suburb, so you spend wisely.
Save Money, Live Better, Sell Smarter
Sustainability isn’t a luxury anymore. It’s fast becoming the standard.
And while the options can feel overwhelming, you don’t need to do it all at once or spend a fortune to benefit.
Starting small can make a huge difference.
Whether you’re living in your home, renting it out or thinking of selling down the track, every energy-smart upgrade you make is an investment for the future.
Unsure where to start?
We Connect Property can help.
Our experienced team is always happy to provide tailored advice on which eco-friendly upgrades will make the biggest difference, fit your budget and deliver the most value for your property.
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Ready to sell your home or find your next one? If you’d like some expert guidance and support,we’re ready and waiting to help.
Get in touch with the experienced We Connect Property team today for an obligation-free chat, and discover how we can help you get the best possible outcome in Adelaide’s competitive market.
As property experts with over 21+ years combined experience in buying, selling and managing property in Adelaide, We Connect Property are ready and waiting to offer expert guidance and support when you need it most, and can answer all your questions about leasing your investment property.
If you’re just getting started, or looking for more valuable property selling, buying or investing tips, tricks and hints? Check out these other handy articles on our blog:
- What Can You Take From A Home When You Sell It?
- Selling Property? Avoid These 3 Legal Pitfalls Now
- The Emotional Toll of Selling Your Family Home
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DISCLAIMER: All recommendations made by We Connect Property are general in nature and not to be relied upon as legal or financial advice. To ensure accuracy, we always strongly recommend seeking independent, professional advice tailored to your specific situation before making any investment or financial decisions.