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Best Energy Upgrades for a Brisbane LPG Home in 2026

Based on a typical 3-bedroom home in Queensland · Updated October 2026

Queensland's subtropical and tropical climate produces outstanding solar generation year-round. Most homes are all-electric, removing the need for gas switching but making solar self-consumption and battery storage the primary levers. High air conditioning loads during summer create ideal conditions for large solar systems and battery pairing.

What we modelled: how we calculated these results

3-bedroom home, ~18 years old
State: QLD
Electricity: 28c/kWh
Feed-in tariff: 6.0c/kWh
Gas: 6.3c/MJ
Gas usage: ~12,549 MJ/year
Electricity usage: ~3,746 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

Electric Vehicle

Pays for itself in 3.9 years, then saves ~$1,857/year.

$8,070
Profit
Net cost
$9,000
Payback
3.9 yrs
15yr savings
$27,659
2

Solar + Battery

Pays for itself in 5.3 years, then saves ~$1,760/year.

$6,032
Profit
Net cost
$9,149
Payback
5.3 yrs
15yr savings
$26,890
3

Heat Pump Hot Water (gas switch)

Pays for itself in 5.3 years, then saves ~$575/year.

$5,207
Profit
Net cost
$3,330
Payback
5.3 yrs
15yr savings
$11,565
4

Induction Cooktop

Pays for itself in 12.2 years, then saves ~$161/year.

$54
Profit
Net cost
$2,500
Payback
12.2 yrs
15yr savings
$3,255

Portfolio summary

$23,979
Total investment
$69,369
Total savings (15yr)
$19,363
Net profit

Below market returns at this time horizon

These upgrades still save money on energy bills, but the return doesn't beat the 8% stock market benchmark over 15 years. They may become worthwhile with a longer holding period.

Draught Sealing
Below benchmark by $1,093
Insulation
Below benchmark by $2,014
Battery (add-on)
Below benchmark by $2,393

Frequently asked questions about Queensland energy upgrades

What is the best energy upgrade for a Queensland home?▾
For a typical 3-bedroom home in Queensland, Electric Vehicle is the highest-return upgrade with a net profit of $8,070 over 15 years and a payback period of 3.9 years.
How much can I save on energy bills in Queensland?▾
By following the full recommended upgrade sequence, a typical Queensland home could save $69,369 over 15 years, with a total investment of $23,979 and a net profit of $19,363.
What electricity rate does Queensland pay in 2026?▾
We modelled Queensland homes at 28c/kWh with a feed-in tariff of 6.0c/kWh, based on current QLD retail rates. You can adjust these in the calculator to match your actual plan.
What order should I install energy upgrades in Queensland?▾
The optimal sequence is: 1. Electric Vehicle, 2. Solar + Battery, 3. Heat Pump Hot Water (gas switch), 4. Induction Cooktop. 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 WalesVictoriaSouth AustraliaWestern 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?