Project: Solar PV Installation

Location: Rhosneigr, Anglesey, N Wales

The
The Green Electrician was approached to design and install a solar PV array on a holiday house in Anglesey, North Wales.

The site survey showed the roof to be north west orientation and clear of obstruction and shadow.  We advised as the orientation was optimum and the solar panels would be less efficient than a more southerly orientation and we provided comparison graphs and calculations to show the difference in output. The customer was keen to proceed on this basis.  We designed a 2.16kWp array of 12 Sharp solar panels to be installed on a slate roof.

The customer also purchased the Sunny Beam stand-alone meter to show instantaneous power output and daily output over the last 31 days.

“We think all holiday cottages should do the same, a roof with a solar PV panel is an investment, whilst a roof without solar panels is a wasted asset." the owner reports

In the first year of installation, the system made 35 kWh over the estimated annual output. In June it averaged 11kWh/day. This demonstrates how close the Government SAP figures are in estimating the annual output of a solar electric system.
 

Technology: 2.16kWp Sharp Solar PV

Energy output: 1,800kWh/year

Carbon saving: 774kg CO2/year

Date: June 2009