We used United Solar on a previous home about 3 years ago and were pleased with the product at the time. Since then they have improved the overall product which is a great achievement.
Their pricing is not the lowest but their speedy response to our request for the initial quote and subsequent questions, general level of service and professionalism outweighed the cost difference.

Couldn't be more happy ...great customer service...from the first contact the whole thing complete - always knew what was happening via text and email...seamless transfer from old company..installers arrived on Time and where polite - left no mess...very happy

Approximate cost: $7000

Sales and Customer service, pre and post implementation have been fantastic.
Communication has been easy, both by phone and email.
Contracts clear and easy to read where necessary, with diagrams, not page upon page of needless fine print all in the same font..
Ability to sign contract electronically, rather than waste time in the mail is a bonus.
The panels that were originally to be installed ( Trina ) were not available due to a supplier issue, but United offerred us Suntech 315w panels as an option rather than hold up the install any longer. We were happy with this, the Suntech's are just as good if not better.
Install was rescheduled due to bad weather on the previous days job, but rather than make us wait they offered to do our install on a Saturday , instead of Friday. Even better, i didnt need to take a day off work :)
Installers were friendly, turned up on time and did the job properly ( even called in an extra bloke half way through as it was a big job ) , and cleaned up after themselves.
System is running well, our 5KW system is pumping out around 4900- 5100w in clear strong sun, right on spec.
All in all a very happy customer.

Approximate cost: $6500

Very customer oriented not the cheapest equipment but quality is best and tge installation crew where very friendly and helpful with any question and queries I had

In response to an online qotation sevice I was contacted by several solar installation companies qouting foir outer suburban, 4.5Kw, string, 2-story system. I took the time to review all quotes and discuss these quotations with the nominated representative. I felt more assured with Odessa from United solar than the other competing solar company reps.
United also offered a good panel and a 260W panel was of interest. The instalation went smoothly and was completed as agreed, depite poor weather- no surprises! The two installers were pleasant and hrad at the job. Two great workers.
While United were not the cheapest, rather more toward the higher I did feel confident with them. The package offerred with SUMO is also worth consideration.
No horror stories with this instalation.

Approximate cost: $6300

I was impressed with the sales and installation of our solar pv installation, however, after paying $140 for tilt frames so the panels would be aligned north, the panels were not tilted and are facing east on a virtual flat roof.

Approximate cost: $5677

Excellent attention to detail.
Friendly, courteous sales and installation staff.
Overall a very positive experience and good value for money.

System installed Nov 2015. Happy to invest in a quality solar system that will save me money, installed by an accredited retailer with clean energy council, guaranteed production , day to day savings with many retailers etc. Installation team very efficient and identified the best location to install panels to maximise electrical generation. Great service finding cheaper energy supplier, although paperwork changing suppliers taking forever (weeks!).

Miscommunication for invoice ('cash' - no payment plan) led to chasing of payment within hours, which was unexpected. Complaint very badly managed by management. Poor customer service from a senior Manager laying blame on sales employee, laying blame, challenging my experience, eventually putting phone down on me after what was considered to be too long a conversation (30 mins). Apparently buying solar up front is just like buying a car with cash, however this car 'will' get roadworthy in 1-2 weeks after payment, and the car can't be driven for weeks following purchase. terrible customer service. I have had to do a lot of chasing ( for electrical inspection, discounts, to get the system operational ).

18 Jan 2016: approx 2 months: system still not operational, no communication from United Solar Energy. No information on discount service to date. Maybe if I call again...

Approximate cost: $8000

I would highly recommend United Solar as the experience I've had was absolutely wonderful

Approximate cost: $9000

Solar system design, Harry was great communicator and the presentation was very professional. I would use them again..