Solar installers Centenary Heights
1970s brick, gentle slopes and mature gardens: Centenary Heights is established Toowoomba with solid roofs and steady sun.
- 30-year workmanship
- NETCC approved
- QLD #88205-licensed
- Postcode
- 4350
- Council
- Toowoomba Regional Council
- Network
- Energex
- From our Ormeau depot
- 170 km · ~145 min
- Wind region
- Region A, non-cyclonic
- Sun-hours per day
- 5.5 avg
- STC zone
- Zone 3 (1.382)
What makes Centenary Heights different
Centenary Heights is a 1970s and 1980s suburb on Toowoomba's south-eastern slopes, between the high school and Rangeville. The homes are low-set brick with concrete tile roofs on 700 to 900 m2 blocks, and the gardens have had fifty years to grow. Streets run down toward the escarpment, so orientations vary and the shade model decides the plane.
- 19,713 rooftop systems in postcode 4350, with 1,211 added in the year to July 2026
- New 4350 systems averaged 11.3 kW last year
- 1,070 batteries installed across 4350 in the 12 months to July 2026
- High daytime occupancy lifts self-consumption to around 45 percent without a battery
- Cool range air keeps panels near rated efficiency through winter heating season
What postcode 4350 has already put on its roofs
Every accredited solar and battery install in Australia is registered with the Clean Energy Regulator by postcode. These are the numbers for 4350, which covers Centenary Heights, along with East Toowoomba, Glenvale, Kearneys Spring, Mount Lofty, Newtown and Westbrook.
Source: Clean Energy Regulator, postcode data for small-scale installations, data as at 31/07/2026. Counts are for the whole postcode, and the last 12 months will still rise because installers have a year to register certificates.
Centenary Heights sunshine through the year
Twenty years of satellite-measured sunlight at the Centenary Heights centroid, turned into the kilowatt-hours a 6.6 kW system would produce each month.
- Best month
- Nov
- Lowest month
- Jun
- Winter low as a share of summer peak
- 45%
- Annual output, 6.6 kW
- 11,254 kWh
- Hottest month, average max
- 43°C
Source: NASA POWER, MERRA-2 / CERES SYN1deg climatology, 20-year Meteorological and Solar Monthly & Annual Climatologies (January 2001 - December 2020). Output assumes a north-facing array and an 85% performance ratio.
Solar savings estimate for Centenary Heights
Pre-loaded with Centenary Heights's own sun-hours, Energex tariffs and a typical local home. Slide the bill to match yours.
Preset for a typical Centenary Heights home: 1970s brick home, reverse-cycle heating, retired couple. Adjust to match yours.
Centenary Heights has an older demographic with high daytime occupancy, so self-consumption of 45 percent is realistic and a 6.6 kW system covers most homes without a battery.
- Share of your bill covered
- 73%
- Indicative installed price
- $6,500
- Used at home / exported
- 5,068 / 6,194 kWh
- STC rebate (Zone 3)
- about 45 STCs, $1,755
Estimate only. Uses NASA POWER 20-year average sun-hours for Centenary Heights, Energex tariffs from the 2026 Default Market Offer, a 85% performance ratio and 2026 installed prices after the STC rebate. STC value assumes $39 per certificate and a 5-year deeming period. Your roof, shading and quote will change the numbers.
Open the full calculator with 4350 filled inCan you export solar in Centenary Heights?
Energex publishes how much solar each street transformer can still absorb. See the Centenary Heights snapshot and check your own address in about ten seconds.
What we find on Centenary Heights roofs
The typical Centenary Heights roof is a large hipped tile roof with two usable planes, and 10 kW fits on most once we avoid the shaded corner. Tiles from the 1970s are brittle, so we carry replacements. Switchboards from that era sometimes need a safety switch upgrade before connection, which we quote if needed. The cool climate and clear western sky make winter output better than the coast, which matters for heating.
- Housing era
- 1970s to 1980s brick, some 1960s and 2000s infill
- Roof material
- Concrete tile predominantly
- Roof pitch
- Moderate, 20 to 25 degrees, hipped
- Typical block
- 700 to 900 m2, gently sloping
- Home type
- Detached family homes, some retirement units
- Shading
- Moderate, mature garden trees
Panel counts at 440 W per panel, about 2 m² each. We confirm the real count from satellite imagery before quoting.
| System | Panels | Roof area |
|---|---|---|
| 6.6 kW | 15 | about 30 m² |
| 10 kW | 23 | about 46 m² |
| 13 kW | 30 | about 60 m² |
1970s brick home, reverse-cycle heating, retired couple: 6.6 kW, self-consumption around 45%.
What applies to a Centenary Heights install
Council and network
Centenary Heights has no heritage overlays, and the Toowoomba Regional Planning Scheme treats panels on existing dwellings as accepted development. Energex serves the suburb with the standard 5 kW single-phase export cap. Retirement village units on shared title need operator or body corporate consent, which we help arrange. Older switchboards without safety switches need upgrading to meet Energex's connection standard.
STC rebate in Centenary Heights
Centenary Heights is in STC Zone 3 (rating 1.382). With a 5-year deeming period, a 6.6 kW system earns about 45 certificates, roughly $1,755 at $39 each, and a 10 kW system about 69, roughly $2,691. We claim it for you and take it off the quote.
Battery discount
The federal Cheaper Home Batteries Program cuts roughly 30 percent off the installed cost of a home battery, stepping down each year to 2030. Postcode 4350 added 1,070 batteries in the year to July 2026. We size the battery to your evening use, not the biggest unit on the truck.
Asked by Centenary Heights homeowners
Is 6.6 kW enough for a Centenary Heights home?
For a couple at home through the day running reverse-cycle heating, usually yes. A 6.6 kW system here produces around 10,000 kWh a year. Larger families with ducted systems are better at 10 kW.
Will you need to upgrade my old switchboard?
Only if it lacks safety switches or has ceramic fuses. We inspect it during the site visit and include any upgrade in the quote, so the price you see is the price you pay.
How do you handle sloping blocks and shade here?
We map the roof from satellite imagery, model the sun path for your address and choose the plane with the clearest sky. Shaded panels go on optimisers so they do not drag down the rest.
Suburbs we cover near Centenary Heights
Centenary Heights is 170 km from our Ormeau depot, about 145 minutes by road, so our own crew does the install.
30 year workmanship warranty
30 year panel warranty
10 year inverter warranty
10 year battery warranty
Get in Touch Today!
Get a no-obligation quote from a real solar expert. Honest advice, no commission-only sales reps, no pushy follow-ups.