Solar panel at the ECO Centre, Newport, Wales, UK. The ECO Centre is a public education centre designed to promote environmental issues connected with energy use. It highlights the need to reduce the effects that society has on the environment, especially with regards to climate change. In 1997, it became the smallest power station in the UK, exporting up to 450 watts of power to the National Grid from its solar panels, including this one. The pipes and tank behind this solar panel are used to collect rainwater.