KESA is Independent Trade Union of Miners and Power Engineers in Estonia.
The idea was to symbolically combine miner's and power engineer's attitudes towards their jobs and towards their union.
Slate, miner's pick, electricity are one of the most descriptive emblems of these people.
Union is about stability, legal protection of rights, reliability.
Colorful Geometrical shape taken as a decorative element
symbolizes merging of two trade unions into one.
This shape is also common for miners and power engeneers as the main source of power they are working for - the slate.
It is also giving a splash of color to the brand.