See the MCU backend Readme to see how to run the example on a smaller device like the Raspberry Pi Pico.
The example can run with the mcu simulator with the following command
cargo run -p energy-monitor --no-default-features --features=simulator --release
To display real weather data in the demo an application key from https://www.weatherapi.com/ is needed. The api key can be injected by settings the
WEATHER_API environment variable. With the WEATHER_LAT and WEATHER_LONG variable position can be set, default is Berlin.