What do the colours of the map markers on the Sites page represent?

The colours of the map markers on the Sites page represent their energy use on a scale from green to red.

The highest consuming site will have a red marker, the lowest will have a green marker, and the other sites' colours are determined by how much their consumption differs from the lowest consuming site.

Sites with no data for the current selection are coloured grey, and when there are less than two sites with data available, they will be coloured blue.