The PV_Live web API (Application Programming Interface) provides access to near-real-time and historical estimates of PV generation on the GB transmission network. It returns a computer-friendly (JSON) response for use in software, websites, apps etc. The Sheffield Solar research group is formed in the Physics & Astronomy department, at the University of Sheffield, as part of the Grantham Centre for Sustainable Futures. It works to bridge the gap between the research lab and how solar photovoltaic (PV) technology is used in the real world and to understand its performance and impact.