A year ago today my PV solar system was installed. It's a west facing, roof mounted, 10 panel 4.15 Kw system with a 5Kw battery.
I received three quotes from well-reviewed installers in Munster (I live in West Cork) and as the two lowest were virtually identical, I went for the local man. Net of grants, it cost 9k to install, including the necessary BER survey.
The following two websites were consulted to calculate the estimated power generation for a year:-
In the past 12 months I have sold 76% of the units produced to my energy supplier, generating an income of €540 and using the remaining 24%, thereby saving an estimated €250.
Further savings have been realised from charging my battery fully every night at the cheap night rate and using the stored power during the daytime. I estimate that this has saved me at least €380.
In summary, my outlay of €9K has resulted in savings in the region of €1,150, after tax but excluding depreciation.
I am very satisfied with this outcome and hope that the above may be of assistance to anyone contemplating a similar installation.