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Solar System Case Study

Dear Finn
I began the process of learning about solar energy about two years ago with your excellent website and it’s accompanying a very comprehensive book. I found your information uncomplicated, complete and usable.

It wasn’t long before I asked that you arrange for three quotes in my area. One company stood out. Although not the cheapest, I believed their offering to be technically superior.

All Green Environmental Solutions of West Gosford were to supply sixteen solar panels, associated Enphase micro-inverters and the Envoy system controller. The installation was completed in November 2018 by a competent and knowledgeable team.

The system went straight to work with impressive results (summer power bills less than $5.00 for the month). Of course the Envoy graphic outputs confirmed my decision to go with Enphase.

In May of 2019, All Green supplied three AC Batteries with a capacity of 3.72kWh. These have proved an excellent addition with daytime solar contributing to evening air-conditioning in the summer and night time off-peak battery charging helping with reverse cycle heating in the winter.

Very happy.

Then in March this year, a curious fault developed which restricted production during the day from about 10:00 am. All Green responded promptly. At first it was thought to be a control issue between the Envoy controller and the micro-inverters. It seemed to be a very complex issue that was rapidly referred to Enphase engineers first in Sydney and then California. Baluns were used to eliminate noise, A new termination box fitted, The Envoy was replaced, A pair of newer IQ 7 micro-inverters were fitted for observation. All to no avail, ultimately the decision was taken to replace all sixteen micro-inverters with IQ 7s and to renew associated cabling, This, of course, means that the root cause of the fault will never be known. The system has been perfect since.

A couple of comments are warranted. All Green Environmental Solutions have been prompt and professional. Their rapid involvement with Enphase here in Sydney and then in the US brought strong expertise to bear, No comment was ever made about the considerable cost of the investigation and repairs, And because of the time is taken and loss of production Enphase have offered compensation.

In essence, the Enphase system has performed above expectations. All Geen and Enphase have provided exceptional support. I am very happy with your recommendation and my decisions.

Regards
Ian Sunderland

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