Commercial energy use, which includes institutional energy use, is what gives businesses, schools (including universities), and public buildings like libraries the ability to serve the public. Commercial energy use should not be confused with industrial energy use; while both are businesses, commercial means engaging in commerce, while industrial means producing goods, usually from raw materials.
The first visualization below shows how much energy is used by commercial (and what type), relative to residential and agriculture, to see this as part of a total, please see energy use by sector. Type in a country name to see an individual country's commercial energy use. In order to see how these compare to the entire energy sector please look at industrial energy use or transportation energy use. The pie chart at the bottom shows the commercial energy use by energy type, in other words, everything flowing into commercial in the Sankey diagram, but includes data for different years.