Coal Treemap visualization of Power Plants in Canada

Hello everyone,

I have designed a visualisation with data from Global Power Plant Database. Would you mind giving your recommendation?

Visual Design Type : density map + bar chart

Name of Tool : Tableau

Country : Canada

Year: 1980–2018

Visual Mappings:shape:square, colour: blue-teal

Hierarchy:name, primary fuel,sum(estimated_generation_gwh)

Color : Different values of estimated_generation_gwh.

Unique Observation: My treemap indicate that Canada’s name point use of coal as well as the number of their names. Through the square of the size and color can know estimated_generation_gwh.

Data Preparation: Data is only from the filtered country…

Web Source :

My Question :

• Does my visual design make sense?

• How can my visual design be improved?