The author of this post purchased an 8 kW Tesla solar system with a 27 kWh battery backup and wanted to monitor its performance using New Relic One. The system has a widely used API, but the author preferred to use New Relic's Metric API for data submission. They created a script to pull data from the gateway API, massage it into a suitable format, and send it to New Relic One. The author then built a custom dashboard using New Relic One's features, including real-time power generation, consumption data, and battery charge level. The dashboard also includes weather data from OpenWeather and has alert functionality for low battery reserves. The author envisions expanding the dashboard to monitor other IoT devices in their home network, leveraging New Relic One's capabilities for infrastructure monitoring.