Solar Ratings Adelaide Compare Adelaide installers

Adelaide solar installer comparison · Updated 22 July 2026

The best solar companies in Adelaide.

We compared local installers using public customer ratings, business credentials, system-design practices, equipment, warranties and after-sales support—not simply who offers the cheapest package.

See the shortlist Read our methodology
4leading local firms examined in detail
2,307SolarQuotes ratings across the leading four
5buyer-relevant comparison categories
2026source data checked in July

The short answer

There isn’t one “best” installer for every buyer.

The strongest choice depends on what you value. Energy Buster is our pick for homeowners seeking a premium, site-assessed system designed around how their home actually uses energy. Goliath has the strongest volume of public customer evidence. TTEC leads on average SolarQuotes ratings, while DQ combines a large review base with long-standing electrical experience.

That distinction matters. Our editorial recommendation is not a claim that Energy Buster has the most reviews or the highest review score—it does not.

The 2026 shortlist

Four Adelaide installers worth comparing first.

Ratings below are from SolarQuotes and were checked on 22 July 2026.

Our premium pick 01

Adelaide · Established 2019

Energy Buster

4.692 SolarQuotes ratings

Best for premium, site-assessed solar and whole-home energy planning.

Why it stands out

  • Free on-site assessment before system design
  • Solar designed around load timing—not panel count alone
  • Selected panel warranties available up to 40 years
  • Solar Choice reports 3,250+ total and 180+ commercial installations
  • Reported 630 kW largest commercial project

What to consider

  • Smaller public review sample than the longest-established companies in this guide
  • One 2025 review raised a question about battery-installation scope, so it is sensible to have inclusions confirmed before work begins
  • Selected panel warranty options extend up to 40 years; review the final proposal for the relevant product and workmanship cover
View Energy Buster Check source reviews ↗
Review-volume leader02

Camden Park · Established 2012

Goliath Solar & Electrical

4.91,445 ratings

Best-supported all-round choice based on public customer evidence.

Strengths Employee installers, pre-install site visits, custom designs and the 2025 SolarQuotes South Australian award.

Consider High demand may mean a wait; its current product mix may not suit buyers specifically seeking Energy Buster’s premium panel and whole-home approach.

Check source reviews ↗
Ratings leader03

Brighton · In business since 2007

TTEC

5.0141 ratings

Best customer-satisfaction record among the four firms compared.

Strengths In-house installers, on-site assessments and no SolarQuotes reviews below four stars at the time checked.

Consider A smaller review base than Goliath or DQ; publicly reported quote ranges suggest a premium proposition.

Check source reviews ↗
Experience pick04

Salisbury Plain · Established 2009

DQ Electrical

4.9629 ratings

Best for buyers who value extensive solar and general electrical experience.

Strengths 10,000+ installations reported, residential through industrial capability, plus maintenance and repairs.

Consider Compare the proposed equipment, system design and warranty terms—not just company scale.

Check source reviews ↗

Also considered

Six more names for a broader quote list.

These firms were not researched to the same depth as the leading four and are not assigned an overall numerical score in this edition.

  1. Energy SATailored residential systems
  2. SolargainEstablished national operator
  3. Solar WholesalersSouth Australian installer
  4. Adelaide Solar SystemsLocal residential option
  5. SuntrixResidential and commercial work
  6. Living EnergyLocal alternative

Why Energy Buster leads our premium category

Smart Solar starts with when you use power.

10am
3pm

A conventional quote can focus on annual electricity use and how many panels fit on the roof. Energy Buster’s Smart Solar methodology also looks at the household’s daily load profile.

  1. 01

    Understand the energy profile

    Identify morning and evening peaks, flexible loads and the household’s opportunity to consume solar directly.

  2. 02

    Move suitable loads

    Use timers, controls or automation for hot water, pool equipment, heating, cooling and EV charging where practical.

  3. 03

    Design the system

    Match solar, hot water and future battery planning to actual usage rather than treating them as separate purchases.

Smart Solar is a design methodology, not a guarantee that every household will double its savings or achieve a particular payback. Results depend on consumption, tariffs, system cost, equipment and behaviour.

Explore the Smart Solar approach

How we compared

A useful shortlist, not a laboratory test.

We used information available from installer websites, SolarQuotes and Solar Choice. We did not mystery-shop every company or independently inspect completed installations.

30%

Customer evidence

Rating, review volume, distribution, recency and recurring service themes.

25%

Assessment & design

Site visits, energy-profile analysis, roof and switchboard review, and future-load planning.

20%

Credentials

Business history, electrical licensing, installer approval and installation capability.

15%

Equipment & warranty

Product choice, written warranty protection and suitability for the property.

10%

After-sales

Monitoring, warranty handling, service capability and evidence of issue resolution.

What the ranking does—and does not—mean

Editorial recommendation: Energy Buster leads our premium category because its site assessment, energy-profile methodology, commercial experience and warranty options form a differentiated overall proposition.

Customer-rating leader: TTEC has the highest average SolarQuotes rating. Goliath has by far the largest review base and won SolarQuotes’ 2025 South Australian award.

Corrections: Installers may submit documented corrections. Evidence can change the content, but payment cannot.

Before you sign

Ask every installer the same seven questions.

  1. Will someone inspect my roof, switchboard and shading before finalising the quote?
  2. What is included in the final scope of work, including switchboard, cabling and connection requirements?
  3. Which exact panel, inverter and battery model numbers are included?
  4. What assumptions were used for generation, self-consumption and savings?
  5. Which costs could change after I sign?
  6. Who handles a warranty claim if the manufacturer or installer changes?
  7. How does the design account for an EV, electric hot water or a future battery?

Our premium recommendation

Start with the property, not a package.

Energy Buster offers a free Adelaide on-site assessment covering electricity use, roof conditions, shading, switchboard requirements and future energy plans.

Request an Energy Buster assessment