Database · Adelaide

Best Solar Installer in Adelaide, 2026

4 of the 20 solar installers in our directory operate in Adelaide, SA, ranked on verifiable credentials and information transparency. Coverage spans Adelaide, North Adelaide, Glenelg, Norwood, Unley and Prospect. Listed providers are registered with the Clean Energy Council (CEC) accreditation scheme. This list ranks by independent score across credentials, transparency, and service coverage. No pay-to-rank, no sponsored entries.

4 providers ranked No paid placements

The Community Services Desk · Editorial team, NDIS + emergency plumbing + solar · Updated 6 June 2026 · How we rank · Editorial standards

Which is the best solar installer in Adelaide?

Our top-ranked solar installer in Adelaide for 2026 is Goliath Solar & Electrical — Goliath Solar & Electrical consistently ranks among the top solar installers in Adelaide. Runners-up: Thoroughtec Solar (TTEC) and DQ Electrical & Solar. All 4 providers in this guide serve Adelaide and are ranked on verifiable credentials and information transparency, not paid placement.

Based on 4 providers profiled in Adelaide, all cross-referenced against the relevant Australian regulator. Independent ranking, no paid placements, no first-party reviews.

★Key takeaways

✓4 listed providers operate in Adelaide, SA (of 20 nationally).
✓Coverage focus: Adelaide, North Adelaide, Glenelg, Norwood, Unley.
✓Our #1 pick for Adelaide: Goliath Solar & Electrical — best for overall quality and reliability in adelaide.
✓Adelaide-specific pricing range from listed providers: $4,500 to $4,500.
✓Independent comparison, no paid placements. Last reviewed 6 June 2026.

4 Verified Solar Installers in Adelaide, Ranked

Goliath Solar & Electrical

Adelaide, Australia

6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)

Best for: overall quality and reliability in Adelaide

Goliath Solar & Electrical consistently ranks among the top solar installers in Adelaide. CEC-Approved Solar Retailer in Camden Park, Adelaide. Installs Trina, Canadian Solar systems. Pricing 6.6kw from $4,500 / 13kw from $9,500 (after stc rebate).

Strengths

✓CEC-Approved Retailer (quality flag)
✓Tier-1 panels (Trina, Canadian Solar)
✓Battery: Tesla Powerwall, Sungrow
✓14+ years operating

Consider

−Fewer online reviews (0) compared to larger competitors
−Compare quotes with at least 2 other providers

See full profile Visit website →

Thoroughtec Solar (TTEC)

Adelaide, Australia

6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)

Best for: strong local reputation in Adelaide

Thoroughtec Solar (TTEC) stands out for a mix of strong reviews (0/5 across 0 reviews) and clear pricing. Solar installation firm in Flagstaff Hill, Adelaide. Installs REC, Jinko systems. Pricing 6.6kw from $4,500 / 13kw from $9,500 (after stc rebate).

Strengths

✓Tier-1 panels (REC, Jinko)
✓Battery: Tesla Powerwall, Sungrow
✓19+ years operating
✓Flagstaff Hill based

Consider

−Fewer online reviews (0) compared to larger competitors
−Confirm service coverage for your exact suburb

See full profile Visit website →

DQ Electrical & Solar

Adelaide, Australia

6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)

Best for: value for money across Adelaide

With a 0/5 rating from 0 reviewers, DQ Electrical & Solar is a reliable pick. CEC-Approved Solar Retailer in Lonsdale, Adelaide. Installs LG, JA Solar systems. Pricing 6.6kw from $4,500 / 13kw from $9,500 (after stc rebate).

Strengths

✓CEC-Approved Retailer (quality flag)
✓Tier-1 panels (LG, JA Solar)
✓Battery: Tesla Powerwall, Sigenergy
✓17+ years operating

Consider

−Fewer online reviews (0) compared to larger competitors
−Ask about after-hours or weekend surcharges

See full profile Visit website →

Class A Energy Solutions

Adelaide, Australia

6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)

Best for: first-time clients in Adelaide

Class A Energy Solutions earns its spot through transparent pricing and a credible track record in Adelaide. CEC-Approved Solar Retailer in Glenunga, Adelaide. Installs Jinko, Trina systems. Pricing 6.6kw from $4,500 / 13kw from $9,500 (after stc rebate).

Strengths

✓CEC-Approved Retailer (quality flag)
✓Tier-1 panels (Jinko, Trina)
✓Battery: Tesla Powerwall, BYD
✓25-year workmanship warranty

Consider

−Fewer online reviews (0) compared to larger competitors
−Request an itemised quote before committing

See full profile Visit website →

Solar Installer in Adelaide, side by side · Click any header to sort
Provider ⇅	Price range ⇅	Service coverage ⇅	Best for ⇅
Goliath Solar & Electrical	6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)	CEC-Approved Retailer (quality flag)	overall quality and reliability in Adelaide
Thoroughtec Solar (TTEC)	6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)	Tier-1 panels (REC, Jinko)	strong local reputation in Adelaide
DQ Electrical & Solar	6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)	CEC-Approved Retailer (quality flag)	value for money across Adelaide
Class A Energy Solutions	6.6kW from $4,500 / 13kW from $9,500 (after STC rebate)	CEC-Approved Retailer (quality flag)	first-time clients in Adelaide

Pricing and availability data checked against public sources at time of publication. We do not host first-party reviews; star ratings have been removed from this directory pending a moderated review-collection process.

How we rank solar installer in Adelaide

We rank providers using a weighted scoring model: 40% credentials and regulator verification, 25% price transparency and value, 20% service coverage (availability, response time, specialisations), 10% information completeness, and 5% complaint history (Fair Trading, industry ombudsman). Rankings update quarterly or when new data warrants a change. Best Solar Installers does not accept payment to feature or rank providers; where referral fees apply, they are disclosed in our footer and do not affect position.

Common questions

FAQs: solar installer in Adelaide

Who is the best solar installer in Adelaide?

Our 2026 ranking puts Goliath Solar & Electrical first for Adelaide, best for overall quality and reliability in adelaide. We rank on verifiable credentials, information transparency and service coverage — not paid placement. "Best" depends on your specific needs, so use our ranking criteria below and compare 2–3 before committing.

How much do solar installers cost in Adelaide?

Services typically cost between $200 and $25,000 in Adelaide in 2026, depending on scope, provider seniority, and specialisation. Most providers offer free initial quotes; comparing 3 or more before committing is a common consumer approach.

How quickly can I get a quote in Adelaide?

Most solar installers in Adelaide respond to quote requests within 24 hours, and many within the same business day. Submitting your requirements once through a comparison service like Best Solar Installers returns up to 3 quotes in under a minute.

How much does a solar system cost in Australia in 2026?

Standard 6.6kW residential system: $4,500-$8,000 installed (after federal STC rebate). 10kW system: $7,500-$13,000. 13kW: $9,500-$16,000. Premium tier-1 panels (LG, REC, SunPower) add $1,500-$3,000. Battery (10kWh): $9,000-$18,000 (less Federal Cheaper Home Battery rebate of $4,000-$7,000). Total system with battery typically $13,500-$22,000 fully installed. Always get 3 quotes — prices vary 30-50% between installers for the same system.

What's the federal STC rebate worth in 2026?

The Small-scale Technology Certificate (STC) scheme automatically discounts your solar system at point of sale. Value depends on system size and location zone (Australia divided into 4 zones based on solar resource). For a 6.6kW system: Zone 1 (Darwin, FNQ): ~$3,500. Zone 2 (Brisbane, Perth): ~$3,200. Zone 3 (Sydney, Adelaide): ~$2,800. Zone 4 (Melbourne, Hobart): ~$2,400. The rebate is built into the price installers quote — you never claim it separately. STC values change with carbon market prices and reduce each year (10% reduction in 2030).

Should I get a solar battery in 2026?

Battery economics improved significantly in 2026 with the Federal Cheaper Home Batteries program ($4,000-$7,000 rebate per battery from 1 July 2025). Best for: high evening electricity use, flat or low feed-in tariffs ($0.04-$0.08/kWh in most states), planning long home occupancy (10+ years), EV ownership, virtual power plant participation (extra income). Payback time with rebate: 6-9 years on a $13,000 battery. Top brands 2026: Tesla Powerwall 3, BYD Battery Box, AlphaESS, Sungrow, Sigenergy.

What is feed-in tariff and how does it work?

Feed-in tariff is the rate your electricity retailer pays for excess solar energy you export to the grid. Rates have declined dramatically: 2010 $0.40-$0.60/kWh, 2020 $0.10-$0.15/kWh, 2026 typically $0.04-$0.08/kWh (some retailers offer higher with conditions). Rates vary by state and retailer — compare on Energy Made Easy (energymadeeasy.gov.au). Strategy: maximise self-consumption (use power when generating) rather than relying on export. Battery storage shifts excess to evening use instead of low-rate export.

How do I find a quality solar installer?

Verify CEC accreditation at solaraccreditation.com.au — required by law for STC rebates. Higher tier: CEC Approved Solar Retailer (industry quality assurance). Look for: 5+ years in business, tier-1 panels (Jinko, Trina, REC, LG), tier-1 inverters (Sungrow, Fronius, SMA, Enphase), product warranties 12+ years, workmanship warranty 5+ years, written quote with components specified, no high-pressure sales. Get 3 quotes and compare apples-for-apples — same panel and inverter brands, same battery if applicable.

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