How long does it take to install solar panels in Brisbane?

The physical roof install for a 6.6kW system takes 4–8 hours and a 10kW system takes a full working day. But the total timeline from signing your quote to the meter spinning backwards is 3–6 weeks in Brisbane, because Energex needs to pre-approve the connection (5–15 business days) and your electricity retailer has to reconfigure the meter (5–20 business days). The actual roof work is the fastest part.

How long does the install itself take for 10 solar panels vs 20 panels?

Roughly: 10 panels (~4.4kW) takes 4–5 hours on a single-storey Colorbond roof with a 2-person crew. 20 panels (~8.8kW) takes 6–8 hours. 30 panels (~13.2kW) usually spills into a second day. Tile roofs add 1–2 hours, double-storey homes add 2–4 hours, and steep pitches over 25° add more again. Battery installs add another 4–6 hours.

Why can't I switch my solar on the same day it's installed in Brisbane?

Because your electricity retailer (AGL, Origin, Energy Australia, etc.) — not Energex, not the installer — has to send a metering technician to reconfigure your meter for solar export. The SLA is up to 20 business days. Until that happens you can technically self-consume solar but you won't be credited for any exports. Picking a retailer with a fast meter-swap SLA before signing your solar contract saves 2–3 weeks.

How long does Energex approval for a new solar system take in 2026?

For standard connections (up to 10kW single-phase or 30kW three-phase), Energex auto-approves in 5–10 business days. Negotiated connections — larger systems or constrained network areas — take 4–8 weeks. From April 2026, Energex's new Basic Dynamic Model Standing Offer covers up to 30kVA with smarter dynamic export limits, which speeds approvals on previously constrained Brisbane feeders.

How long does it take to install a 6.6kW solar system in Brisbane?

Roof work: 5–7 hours on a single-storey Colorbond roof, 8–10 hours on a double-storey tile roof. End-to-end (contract signing to export-credited switch-on): 3–5 weeks, with the meter swap typically being the longest single delay.

Can I install solar on my house in one day?

Yes, the physical install for systems up to 10kW is almost always a single day's work. Larger systems (13kW+) or installs with a battery usually spill into a second day. But 'installed in a day' is not the same as 'producing credited solar in a day' — the meter reconfiguration and Energex paperwork add weeks to the full timeline. Anyone promising same-day switch-on is either lucky or cutting corners.

When is the best time of year to install solar panels in Brisbane?

April–September is the best window for SEQ — drier, cooler, fewer storm delays, and crews are less booked. December through March is wet-season territory: installs routinely get postponed mid-job for thunderstorms, and rooftop work stops at the first lightning warning. That said, don't wait. Every month you delay is a month of full grid bills you can't recover, and good installers work year-round around the weather.

How long do commercial solar panel installs take?

Commercial systems are sized in 30kW–100kW+ ranges and typically take 3–10 working days on the roof, with full paperwork and Energex commissioning running 6–12 weeks end-to-end. Larger systems (100kW+) need a Network Connection Agreement from Energex which alone can take 8–16 weeks. Plan on 2–4 months total from contract to commissioned for anything over 30kW in SEQ.

What paperwork is involved in a Brisbane solar install?

Four mandatory documents: (1) Energex Form A — connection application, submitted by your installer before install; (2) Certificate of Electrical Safety (CES) — signed by the licenced electrician on the day; (3) STC assignment form — transfers the federal rebate to the installer so it's already discounted from your price; (4) Handover pack — system specs, warranty cards, inverter login. Anyone skipping these isn't running a legal install.

Does a battery installation take longer than just solar panels?

Yes. A solar-only 6.6kW install is typically 5–7 hours; adding a battery (Tesla Powerwall 3, Sungrow SBR, BYD HVM) adds 4–6 hours and usually pushes the job to 1.5–2 days. Wall preparation, battery mounting, hybrid inverter wiring and commissioning all take longer. Battery installs also need separate Energex approval for the storage component, which adds 5–10 business days to the paperwork timeline.

How Long to Install Solar Panels in Brisbane? 2026 Timeline

Quick answer: the physical solar install in Brisbane takes 4–8 hours for a 6.6kW system and a single working day for a 10–13kW system. But the full timeline from signing your quote to exporting power to the grid is usually 3–6 weeks, and most of that is paperwork — Energex connection approval, meter swap by your retailer, and STC paperwork.

We get asked this every week, and the honest answer surprises people. The roof work is the easy bit. Here's exactly what happens, day by day, in South-East Queensland in 2026.

The Full Timeline: Quote to Switch-On

Stage	Typical Time (Brisbane 2026)	Who's Doing the Work
1. Site visit & quote	1–3 days	Solar retailer
2. Contract & deposit	1 day	You + retailer
3. Energex pre-approval (DA/MSO)	5–15 business days	Installer submits, Energex approves
4. Install scheduling	1–4 weeks (peak season longer)	Retailer
5. Physical install on roof	4 hours – 2 days	CEC-accredited crew
6. Electrical inspection & CES	Same day – 3 days	Licenced electrician
7. Meter reconfiguration	5–20 business days	Your electricity retailer
8. Final commissioning & switch-on	Same day as meter swap	You

Total: 3–6 weeks is normal. 8–10 weeks happens at peak (Sep–Dec rush before summer bills).

The Roof Work: Hour by Hour

Here's what a standard 6.6kW Brisbane install actually looks like on the day, from a crew of 2 installers + 1 licenced electrician:

7:00–7:30am — Setup

Crew arrives, tarps your driveway, sets up the ladder and edge-protection scaffold (mandatory in QLD since 2019 working-at-heights rules). Inverter and panel pallet unloaded.

7:30–9:00am — Racking

Roof penetrations marked, brackets bolted through to the rafters and sealed with silicone or proper flashing kit (tile roofs take an extra 60–90 minutes here for tile replacement feet). Marine-grade aluminium rails clipped on.

9:00–11:30am — Panels up

Sixteen 440W panels lifted, clamped to rails, daisy-chained with MC4 connectors. This is the visible part — most of the day's "is it nearly done?" looking happens during this window.

11:30am–1:00pm — Inverter & DC cabling

Inverter mounted (shaded north or east wall, never in direct afternoon sun in Brisbane — heat derating costs you 5–10% production). DC cables run from roof to inverter in proper UV-rated conduit, DC isolators fitted at panel and inverter end.

1:00–2:30pm — AC connection & switchboard

Licenced electrician ties the inverter into the switchboard, fits the solar circuit breaker, labels everything to AS/NZS 5033, installs the export-control device if your system is over 5kW per phase.

2:30–3:30pm — Commissioning & handover

System powered up, inverter configured to Energex compliance settings (export limit, ride-through, frequency response), monitoring connected to your Wi-Fi, paperwork signed (CES — Certificate of Electrical Safety, STC assignment form, handover pack).

You're done by mid-afternoon for a standard tin-roof, single-storey 6.6kW.

What Makes It Longer

Factor	Extra Time Added
Tile roof vs Colorbond	+1–2 hours
Double-storey home	+2–4 hours (more scaffold, harder lifts)
Steep pitch (>25°)	+1–3 hours
10kW system (24 panels)	+2–4 hours
13.2kW system (30 panels)	Usually spills into day 2
Battery added (Tesla / Sungrow / BYD)	+4–6 hours, often day 2
Switchboard upgrade required	+3–5 hours (electrician only)
3-phase wiring on old board	+2–4 hours
Split-array (E + W roof faces)	+1–2 hours

The Paperwork Bit Nobody Warns You About

Energex pre-approval (5–15 business days)

In SEQ, every new solar or battery connection needs Energex approval before the install. Your installer submits a Connection Application via the Energex portal with your address, system size, inverter model, and phase configuration. Energex checks whether your local transformer can handle the export.

Standard Connection (≤10kW single-phase / 30kW three-phase): auto-approved within 5–10 business days in most Brisbane postcodes.
Negotiated Connection (over the limits, or constrained network): 4–8 weeks, sometimes with export limited to 0–5kW.
From April 2026: Energex's new Basic Dynamic Model Standing Offer covers up to 30kVA with smarter dynamic export — faster approvals, better export allowances on busy feeders.

Meter reconfiguration (5–20 business days)

This is the single most common cause of "my panels are on the roof but I'm not getting credits yet" frustration. Your electricity retailer (AGL, Origin, Energy Australia, Alinta, Red Energy, etc.) — not the installer, not Energex — has to send a metering technician to either reconfigure your existing smart meter or swap a dumb meter for a smart one. SLA is typically 20 business days. Some retailers (AGL, Origin) do it in under a week; others routinely take 4 weeks.

Pro tip: switch to a retailer with a fast meter-swap SLA before install day. We tell every Brisbane client to do this on contract signing day. Saves 2–3 weeks.

STC rebate paperwork (1–2 days)

Your installer assigns the STCs (Small-scale Technology Certificates) at install — that's how the ~$3,500 federal rebate gets discounted off your quoted price. The paperwork is online and instant if the installer is registered with an STC aggregator. No delay to you.

How Long for Different System Sizes

System Size	Panels	Roof Time (Colorbond, single-storey)	Roof Time (Tile, double-storey)
5kW	12	4–6 hours	6–9 hours
6.6kW	16	5–7 hours	8–10 hours
10kW	24	7–9 hours (1 day)	1.5 days
13.2kW	30	1–1.5 days	2 days
10kW + 10kWh battery	24 + battery	1.5–2 days	2–2.5 days

When NOT to Install (Brisbane Weather)

Wet season (Dec–March): installs get postponed mid-job for thunderstorms — roof work stops at first lightning warning. Add a 20–30% chance of a half-day reschedule.
Heatwave days (35°C+ roof temp = 60°C+): good crews stop by midday for safety. Anyone working through it is cutting corners.
Best months in SEQ: April–September. Cooler, drier, faster turnaround, more crew availability.

That said — don't wait for a perfect month. Every month delayed is a month of bills you didn't need to pay. Most installers work year-round; they just plan around the weather.

How to Make It Faster

Pick a retailer with fast meter SLA before signing. Saves 2–3 weeks.
Choose a standard inverter (Sungrow SG10RT, Fronius Primo, GoodWe DNS). Pre-approved with Energex, no negotiated connection delay.
Stay under 10kW single-phase / 30kW three-phase. Auto-approval territory.
Be home on install day. Speeds up Wi-Fi setup, monitoring app, and final paperwork.
Have a clear switchboard. If yours is from the 1970s, expect an upgrade ($500–$1,500, +half a day) — get it done before solar day.
Avoid commercial off-peak install windows if you want it done in a single visit. Some cheap retailers split jobs across two visits a week apart.

Red Flags on Timeline Promises

"Installed tomorrow" — they're skipping Energex pre-approval. Illegal install, voids warranty, Energex can force disconnection.
"Done in 2 hours" — they're not isolating, labelling or commissioning properly. AS/NZS 5033 compliance alone takes longer than that.
"Switched on the same day as install" — physically impossible without an existing smart meter and a retailer with a same-day reconfiguration team. Maybe 1 in 20 jobs.
"No paperwork needed" — there are 4 mandatory documents (CES, STC assignment, handover pack, Energex Form A). Anyone skipping these isn't legal.

The Honest Brisbane Benchmark

Plan for 4 weeks from contract signed to your meter spinning backwards as a realistic average. Some clients hit 2.5 weeks; some hit 7 weeks if their retailer drags the meter swap or it's January storm season. The roof crew themselves are usually on-site for less than a day.

If your retailer can't tell you the meter-swap SLA on contract day, that's the variable that will burn you — not the install itself.

How Long Does It Take to Install Solar Panels in Brisbane? (2026)