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LAST UPDATED: MARCH 2026 · DATA: CLEAN ENERGY REGULATOR & STATE SOURCES
Mount Gravatt solar fact
Mount Gravatt's elevated position — 99 metres above sea level — gives its north-facing homes 18 additional minutes of morning solar generation compared to low-lying Brisbane suburbs like South Brisbane
Estimated Monthly Output — 6.6kW
kWh/month · peak: Dec (693 kWh)
Solar in Mount Gravatt — What You Need to Know
Mount Gravatt sits on the highest ground in Brisbane's south, with GRIFFITH University's campus occupying the summit and residential streets cascading down to the north, east and west. This elevation advantage is real and measurable for solar: homes on the north-facing slopes of Mount Gravatt East and Mansfield have clear solar horizons from around 7:30am. The suburb's housing stock is predominantly 1970s–90s brick homes on 600–800m² blocks, with a high owner-occupier rate and strong family demographics. Logan Road and the Mount Gravatt-Capalaba Road corridor create a competitive local installer market, with multiple CEC-accredited businesses competing for the suburb's consistent installation demand. The suburb's school catchment includes Mansfield State High — one of QLD's highest academic performers — attracting a professional demographic that combines high incomes with strong ROI awareness.
Solar Panel Cost in Mount Gravatt 2026
| System | Cost after STCs | Annual savings | Feed-in |
|---|---|---|---|
| 5kW | $2842–$3344 | $1860+ | 6.7c |
| 6.6kW ★ | $3344–$4484 | $2480 | 6.7c |
| 10kW | $4347–$5829 | $3472+ | 6.7c |
FAQs — Solar in Mount Gravatt
How much do solar panels cost in Mount Gravatt?
A 6.6kW system in Mount Gravatt 4122 costs $3344–$4484 after federal STC rebates in 2026.
Is solar worth it in Mount Gravatt?
Mount Gravatt earns a A- (Very Good) solar grade with a score of 85/100. 38% of homes here already have solar.
What size solar system for Mount Gravatt?
6.6kW suits most Mount Gravatt homes. Larger homes with pools or EVs should consider 10kW+. QLD's feed-in tariff is 6.7c.
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Going Solar in Mount Gravatt
Mount Gravatt, in the Brisbane region of QLD, receives approximately 5.2 peak sun hours per day — well above the national average of 4.2 hours. With electricity rates of approximately 30c/kWh and Zone 1 Small-scale Technology Certificates (STCs) applying in this area, the financial case for solar in Mount Gravatt is moderate.
At 38% solar adoption, Mount Gravatt is already a solar leader in the region. This means experienced local installers are readily available and the grid operator has well-established processes for residential solar connections.
A 6.6kW solar system in Mount Gravatt costs approximately $3344–$4484 after STC rebates. At 5.2h daily sun and 30c/kWh electricity, you can expect annual savings of approximately $72 — giving a payback period of 55.6–90.3 years, followed by 20+ years of near-free electricity.
The electricity network in Mount Gravatt is managed by Energex (SEQ) or Ergon Energy (regional). Energex manages South-East Queensland's network. Connection times for >5kW are typically 4–8 weeks in Brisbane metro. For residential systems above 5kW, a network connection application is typically required — your installer will handle this as part of the installation process.
Solar Rebates in Mount Gravatt
Homeowners in Mount Gravatt () access the following solar incentives in 2026:
Zone 1 FEDERAL STCs
Zone 1 STCs — maximum federal rebate, worth $3,200–$4,000 off a 6.6kW system. STCs are applied as a point-of-sale discount — your installer handles the paperwork.
STATE: QLD
No current state cash rebate but solar is strongly supported through QLD government policy
FEED-IN TARIFF
QLD currently offers approximately 8.0c/kWh for excess solar exported to the grid. Self-consumption saves 30c/kWh — 3.8x more than exporting.
What Size Solar System for Mount Gravatt?
The right system size depends on your electricity usage. A quick rule: divide your quarterly bill by $100 to get your ideal system size in kW. For Mount Gravatt, common household sizes are:
With QLD's feed-in tariff at 8.0c/kWh and electricity at 30c/kWh, the priority is maximising self-consumption rather than grid export. If your household is away during peak solar generation hours (10am–3pm), adding a battery to shift solar to evening use improves payback. See our solar battery guide for battery options and payback analysis.
Compare all system sizes — 5kW to 13kW →More Guides
How to Choose a Solar Installer in Mount Gravatt
With dozens of solar installers operating in the Brisbane area, choosing the right one for Mount Gravatt requires a few checks. Here's what to look for:
Our free solar score tool connects you with up to 3 CEC-accredited, vetted installers in Mount Gravatt — saving you the time of calling around. Every installer in our network has verified reviews and local Brisbane experience.