Originally Posted by 
Roverlord off road spares
				 
			Well I had a quote emailed to me on an LG authorised  system installation company,  these are obvious high quality systems offering 25yr parts and labour, and an explanation from a satellite image showing 14 panels on the north roof and 5 panels on the west which gets the uninterrupted sunlight in the afternoon. A very professional proposal but at a cost of $14,500 . they estimated power saving of $1500 per annum.
 this is more than I am prepared to spend. 
they say
[ Due to the shading issues from the tall surrounding trees, especially causing shading through the morning hours, you will need the more advanced SolarEdge inverter technology, with DC Power Optimisers behind every solar panel, which help to mitigate the shading issues, and therefore greatly improve efficiency and reliability. You will also have the advantage of being able to track the performance of each individual solar panel via an easy to use phone app.  SolarEdge additionally happens to come with the longest and most comprehensive standard warranties of any inverter technology on the market, so it is the best long term choice.]