Solar guide for Modbury 5092 — 1960s–1980s homes in the Tea Tree Gully Council area. Costs, rebates, and local installer tips.
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LAST UPDATED: MARCH 2026
JanIn This Guide
Solar panel installation in Modbury (5092) costs $4,000–$6,000 for a standard 6.6kW system after federal STC rebates. This is based on the Adelaide metro area average. Actual prices depend on your roof type, panel brand, inverter choice, and installer.
| System | Cost After STCs | Annual Savings | Daily Output | Payback |
|---|---|---|---|---|
| 5kW | $4,000–$5,250 | $1,286+ | 22 kWh | 3–5 yrs |
| 6.6kW | $4,000–$6,000 | $1,800–$2,400 | 29 kWh | 3–4 yrs |
| 10kW | $5,800–$9,200 | $2,800–$3,600 | 44 kWh | 3–5 yrs |
Prices based on Adelaide metro averages. Solar panel costs in Australia — full 2026 guide →
Modbury is Adelaide's northeastern suburban centre — a 1960s–1980s development hub in the Tea Tree Gully area where standard brick veneer housing on suburban lots and a relaxed planning environment create conditions that are solar-straightforward. The City of Tea Tree Gully covers the Modbury area, and the council has been proactively supportive of renewable energy — Tea Tree Gully was an early participant in SA's community solar programs. Heritage overlays are minimal for Modbury's post-war residential stock, and the installation environment is uncomplicated..
Modbury's position on Adelaide's northeastern fringe (Adelaide Hills slope country at 80–120m elevation) gives it interesting solar characteristics. The suburb sits above the Adelaide metropolitan fog layer that occasionally affects lower coastal and plains suburbs in winter — mornings here are clearer than the coastal suburbs, and the elevation gives marginally better annual radiation than the flat plains. Bureau of Meteorology data for the Tea Tree Gully area shows approximately 5.0 peak sun hours daily — among Adelaide's better performing postcodes. The Adelaide Hills foothills proximity means some properties on the hills-facing eastern side of Modbury have afternoon shading from the escarpment but this is a minority of properties..
Modbury has one specific solar consideration: the suburb's high proportion of split-level and two-storey homes on the undulating Tea Tree Gully terrain. Split-level homes often have roof planes facing in multiple directions at different heights — a configuration that benefits from microinverter or DC optimiser technology to extract maximum value from each independent roof plane. The northeast-facing slopes (common on Modbury's hills-facing properties) generate strong morning output; northwest-facing slopes capture afternoon sun. An installer experienced with complex multi-level homes will model each plane independently and recommend the optimal configuration..
COUNCIL / LGA
Tea Tree Gully
HOUSING ERA
1960s–1980s
COMMON ROOF TYPE
tile
TREE CANOPY
🌿 Medium — some roof sections may be shaded
Homeowners in Modbury (5092) are in STC Zone 2, which provides approximately $2,800 off a 6.6kW system through the federal Small-scale Technology Certificate scheme. Your installer handles the STC paperwork — the rebate is applied automatically as a point-of-sale discount.
South Australia's Home Battery Scheme offers subsidies up to $2,000 for battery storage systems.
SA solar rebates and government incentives — full guide →Modbury homes suit 6.6kW–10kW. Split-level and two-storey properties: ask your installer to model each roof plane independently before recommending a system size. Given SA's 36c/kWh rate, sizing toward 10kW is justified for medium-to-high consumption households — the electricity rate premium makes every additional kW of generation more valuable than in other states..
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Frequently Asked Questions — Modbury
At 80–120m above sea level on the Adelaide Hills approach, Modbury is above the coastal fog and sea-mist that occasionally reduces output for lower-lying Adelaide suburbs in winter. Bureau of Meteorology data shows the Tea Tree Gully area averaging 5.0 peak sun hours daily — slightly above Adelaide's city-centre average. The clearer mornings from the elevated position mean better winter morning output than suburbs in the Torrens basin or the coastal strip.
Yes, for two reasons. First, SA's electricity rate (36c/kWh) generates 33% higher savings per kWh than Victoria's 27c/kWh. Second, Adelaide has better solar radiation than Melbourne (5.0 vs 4.0 peak sun hours/day) — 25% more annual generation from the same system. Combined, a 6.6kW system in Modbury generates approximately 55% more annual bill savings than the same system in Melbourne. The lack of SA's state rebate is fully compensated by the rate and radiation advantages over a 25-year system life.
Yes — City of Tea Tree Gully has been one of SA's more proactive councils on residential sustainability. The council participated in bulk-buy programs and has published solar guidance on their website. No heritage or local planning restrictions affect standard Modbury residential solar installations. SA Power Networks connection application (handled by your installer) is the only process required. The council's sustainability team occasionally runs free solar information sessions for residents — check their events calendar.