👉 A coulthard is a type of energy storage device used in renewable energy systems. It consists of multiple layers of stacked copper plates, each with a different layer of insulation and an electrically conductive material between them. The purpose of this device is to collect excess heat from the battery or other source and convert it into electrical energy, which can then be stored in a separate storage system. Coulthards are commonly used in applications such as solar panels, wind turbines, and marine systems
