@JimmyT said:
Been scratching my head but can’t for the life of me work out what PV is.
Photovoltaic, PV for short. Just saying ‘solar’ without saying ‘solar electric’ could mean hot water. Saying ‘solar panels’ could still mean hot water with a flat collector plate. ‘PV system’ implies the complete package of the panels, their mounting and other associated hardware, and an inverter(s) to convert DC current from the panels into mains AC.