PowerLight

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The concept

Draw the current power generation-mix as a kind of pie chart on a LED ring light, with colors representing a fraction of a specific power generation source.

For example:

  • blue: wind power
  • yellow: solar power
  • green: power from biomass
  • purple: power from nuclear
  • red: fossil + other

Power generation data

This is a bit of a problem. There is no open data available with reasonably complete power generation fractions!

The solar power problem

In particular the solar power fraction is incomplete, see also:

Hardware

Software

The software consists of two parts:

  • backend part that collects the power generation data
  • light part that visualizes the power generation as fractions on a LED ring

Backend

To be implemented, this will probably run on my web page stofradar.nl. Some REST-like resource like http://stofradar.nl:9001/power/now

Returns a JSON-structure like:

{
  "energymix": [
    { "id": "solar", "name": "Solar power", "percentage": 40, "color": "#FFFF00"},
    { "id": "wind", "name": "Wind power", "percentage": 25, "color": "#0000FF"},
    { "id": "fossil", "name": "Fossil (gas+coal)", "percentage": 25, "color": "#FF0000"},
    { "id": "biomass", "name": "Biomass", "percentage": 5, "color": "#00FF00"},
    { "id": "nuclear", "name": "Nuclear power", "percentage": 5, "color": "#FF00FF"}
  ]
}

The power light can just display the fractions with the corresponding colors as specified in the JSON, in the order they are mentioned in the JSON.

Backend