The document provides information about Solar & Gas Advisory Service, a company that provides advice on renewable energy installations including solar photovoltaic (PV) systems. It describes how solar PV systems work to generate electricity from sunlight using panels and inverters, and the financial incentives available through the Feed-in Tariff program which pays homeowners for electricity generated and exported to the grid. Installation costs and processes are outlined along with the equipment included in a typical residential solar PV installation.