This is a hands-on, practical day. We will be installing a PV (photovoltaic) system to run a few small lights at the cob house. This will be a 12volt, off-grid system running LED lighting. First we will explain what the various components of the system are and how the system will work. Then it's outside where we will be installing the PV panel, running cables, installing the lights, placing batteries in their enclosure and wiring them up, connecting the system up and switching on the lights.