How effective is my visualisation?


Source : http://datasets.wri.org/dataset/globalpowerplantdatabase

Visual design type: Treemap

Name of tool: Tableau

Country : China, USA, India, Russia, Japan

Year: NA

Question :
Hi, a couple of questions.

I’m wondering if my use of colour to denote primary fuel is understandable?
Does my visual design make sense?
Is it easy to understand what information it is trying to convey?

Thanks.