From a July 2013 article titled ‘Energy and exergy analyses of a Zero emission coal system’ by Linbao Yan, Boshu He, Xiaohui Pei, and Chaojun Wang of Beijing Jiaotong University, available at Researchgate. This Sankey diagram is for “the exergy flow of the improved Z[ero] E[mission] C[oal] system at benchmark condition”.

Fig. 4. Sankey diagram of the exergy flow of the improved ZEC system at the benchmark condition.

All flows are in kJ. The individual process steps if the system are only labeled with acronyms. They are explained in the article: GF is gasifier, CL is cleaner, RF is a reformer, and CH is a CO2 heater. The article also features the energy flow Sankey diagram.

The Energy Information Administration (EIA) of the U.S. Department of Energy (DOE) publishes an annual report on the Greenhouse Gas Emissions in the US economy. The executive summary of the 2005 report shows a Sankey diagram on page xv.

This Sankey diagram shows on the left side the different sources of CO2 (mainly combustibles), and on the right hand side the industrial sectors (residential, commercial, industrial and transport) that contribute to the CO2 release. Emissions are in million ton CO2-equivalents.

The original Sankey diagram from the report has been reproduced with the e!Sankey software, and is shown below. Footnotes have been omitted, for full detail please refer to the original source.