core/homeassistant/components/amberelectric/icons.json

{
  "entity": {
    "sensor": {
      "general": {
        "default": "mdi:transmission-tower"
      },
      "controlled_load": {
        "default": "mdi:clock-outline"
      },
      "feed_in": {
        "default": "mdi:solar-power"
      },
      "renewables": {
        "default": "mdi:solar-power"
      }
    }
  }
}