SOLECTRUS is a dashboard for photovoltaic systems that shows real-time solar production, consumption, battery usage and grid exchange. It also calculates costs and savings so owners can see how well their installation performs financially.

Highlights

• Runs on your own hardware; a Raspberry Pi is enough
• A companion app called HELIOS sets up the Docker containers and handles updates
• A live demo is available online

Built with Ruby on Rails and released under the AGPL-3.0 license, it is a good fit for home energy enthusiasts who want to keep data local.