On Tuesday 3 July 2018, 12 students from the Remove and Year 11 spent the day at the National Grid Substation in Wimbledon. Led by Simon Dennis, a field technician, they explored the different parts of the site and discovered how they all fit in to deliver power to the South East of London, the London Underground system and the National Rail. They saw big circuit breakers in operation, as they were switched off and on by the staff, large scale transformers, and they learnt how high voltage electricity is transported using gas insulated wires. They also explored all the safety features that allow to monitor any potential outage to the power system. Over a working lunch offered by the company, they were shown the details of how a new project is taking shape to modernise the whole site, replacing old equipment and making the running of it more efficient. The students were enthusiastic about the experience, which was informative not only from the point of view of the Physics and Engineering explored, but also in terms of possible future careers.