← All examples

Best Energy Upgrades for Western Australia Homes in 2026

Based on a typical 3-bedroom home in Western Australia · Updated April 2026

Western Australia's solar resource is exceptional -- Perth consistently records among the highest peak sun hours of any capital city. The Synergy retailer's low feed-in tariff means self-consumption is the primary driver of solar returns, rewarding battery storage and smart load scheduling. Heat pump hot water is also a strong performer given the mild winters and high electricity prices.

What we modelled — how we calculated these results

3-bedroom home, ~18 years old
State: WA
Electricity: 32c/kWh
Feed-in tariff: 3.0c/kWh
Gas: 4.5c/MJ
Gas usage: ~13,534 MJ/year
Electricity usage: ~6,117 kWh/year
Analysis period: 15 years

Recommended upgrade sequence

These upgrades are ordered for maximum return. Each step accounts for the energy changes made by previous steps.

1

Solar + Battery

Pays for itself in 4.8 years, then saves ~$3,292/year.

$9,506
Profit
Net cost
$14,905
Payback
4.8 yrs
15yr savings
$48,769
2

Electric Vehicle

Pays for itself in 3 years, then saves ~$2,319/year.

$11,443
Profit
Net cost
$8,250
Payback
3 yrs
15yr savings
$36,711
3

Heat Pump Hot Water (gas switch)

Pays for itself in 5.3 years, then saves ~$520/year.

$1,914
Profit
Net cost
$3,025
Payback
5.3 yrs
15yr savings
$10,438
4

Induction Cooktop

Pays for itself in 6.2 years, then saves ~$170/year.

$686
Profit
Net cost
$1,800
Payback
6.2 yrs
15yr savings
$5,254
5

Smart Home Energy Management

Pays for itself in 5.9 years, then saves ~$128/year.

$234
Profit
Net cost
$2,000
Payback
5.9 yrs
15yr savings
$4,571

Portfolio summary

$29,980
Total investment
$105,743
Total savings (15yr)
$23,784
Net profit

Below market returns at this time horizon

These upgrades still save money on energy bills, but the return doesn't beat the 10% stock market benchmark over 15 years. They may become worthwhile with a longer holding period.

Draught Sealing
Below benchmark by $174
Insulation
Below benchmark by $606
Battery (add-on)
Below benchmark by $6,860

Frequently asked questions about Western Australia energy upgrades

What is the best energy upgrade for a Western Australia home?▾
For a typical 3-bedroom home in Western Australia, Solar + Battery is the highest-return upgrade with a net profit of $9,506 over 15 years and a payback period of 4.8 years.
How much can I save on energy bills in Western Australia?▾
By following the full recommended upgrade sequence, a typical Western Australia home could save $105,743 over 15 years, with a total investment of $29,980 and a net profit of $23,784.
What electricity rate does Western Australia pay in 2026?▾
We modelled Western Australia homes at 32c/kWh with a feed-in tariff of 3.0c/kWh, based on current WA retail rates. You can adjust these in the calculator to match your actual plan.
What order should I install energy upgrades in Western Australia?▾
The optimal sequence is: 1. Solar + Battery, 2. Electric Vehicle, 3. Heat Pump Hot Water (gas switch), 4. Induction Cooktop, 5. Smart Home Energy Management. Each step is calculated after accounting for the energy changes from previous upgrades, so the order matters.

See what the calculator recommends for your home

These results are for a typical home. Your savings depend on your actual energy usage, roof orientation, and appliance ages.

Run the calculator for your home

Examples for other states

New South WalesVictoriaQueenslandSouth AustraliaTasmaniaAustralian Capital Territory

Related reading

Solar Panels in Australia: Cost and Savings in 2026Home Batteries in Australia: Do the Numbers Actually Stack Up in 2026?