Solar Panels, Guildhall

Chard Town Council is seeking quotation proposals to install a 10.72kWp three phase grid connected solar PV system and battery storage.

The specification of the system is a 10.72 kWp Three phase grid connected solar PV system 32 Q-Cells 335 Watt all black monocrystalline modules, a Schletter mounting frame with three phase SolarEdge hybrid inverter, LG Chem 10kW RESU battery, monitoring and power optimisers The solar array would be mounted on the two west south west facing roofs of the building, furthest south (nearest to the supermarket). On each of these roofs up to 16 panels (subject to planning advice available on request) will be installed in four rows of four panels, all in portrait orientation.

The panels must be well sealed against the elements and suitable for coastal and agricultural locations. They should come with at least a 12 year product warranty and a 25 year performance warranty.

We have been advised that a system with a SolarEdge inverter and power optimisers will perform better than a system using a standard string inverter because each panel is allowed to work to its full potential and does not haveits output 'dragged' down by a weaker or shaded panel elsewhere in the system.

The LG Chem RESU battery charges and discharges is an attempt to

minimise what is imported and what is exported to the grid. It links in with the SolarEdge monitoring allowing the Town Council to see how much power is being stored and self-consumed