A DIY home energy system refers to a renewable energy generation and storage setup that is designed, installed, and maintained by the homeowner, rather than a professional contractor. These systems typically include solar panels, wind turbines, batteries for energy storage, and the necessary inverters and controllers to integrate the system into the home's electrical network. By taking a hands-on approach, homeowners can customize the system to their specific energy needs and preferences, while also gaining a deeper understanding of how renewable energy technologies work.