Our customer had been interested in installing solar panels for several months. He wanted to improve the energy performance of his home and understood the financial benefits of installing solar panels. He had received quotations from other installers based in Wakefield but chose Medoria Solar because we offered superior advice and designed a bespoke high performance system at a sensible price.
The detached house had a hipped roof with three suitable roof surfaces at roughly a 37° pitch. Unfortunately, the smallest roof faced due south and there was a tree partially shading the front of the property. We proposed installing solar panels facing east, west and south, using power optimisers to ensure maximum yield. We put fewer panels on the front so that they could be positioned higher on the roof and reduce the impact of shading from the tree.
We designed an array of 15 x 260w Phonosolar panels (a 3.90kWp PV system). We used the new solar limpet roof brackets to anchor the rails to the rafters. We positioned 5 facing east on the front of the house, 3 on the smaller hipped section facing south and 7 on the back of the house facing west. This made optimum use of the available space and will give more even power generation throughout the day. The system is predicted to produce 2795kWh of electricity per year but due to the power optimisers attached to each panel we are confident it will perform considerably better than that.
We fed the cables through the roof and to the Solar Edge inverter which was located in the loft fixed to a fireproof board. An additional cable was attached which will carry generation data to the customer's computer via the internet so he will be able to monitor the output from his solar panels in real-time.
With this system it is possible to analyse the performance of each individual panel as well as the whole system. The level of detail is very impressive. Below are a couple of screenshots from the online monitoring system. We predicted that the system would generate 387kWh in July 2014 and it actually generated 509kWh - that's a difference of over 30%!