e!Sankey Software for creating Sankey diagrams
Features to create appealing Sankey diagrams

Features to create appealing Sankey diagrams

The software e!Sankey has many features and options to design Sankey diagrams.

Read here about functions the software provides so that you can comfortably and easily make great Sankey diagrams, e.g. by linking values in a Microsoft Excel worksheet to flows in the diagram using the Live Link.

e!Sankey Contact:

Jan Schnakenberg

Jan Schnakenberg



All features for creating Sankey diagrams

e!Sankey is designed to draw one specific type of diagram: Sankey diagrams. It provides all features and many different options to visualize energy flows and material streams as appealing flow diagrams.

Drawing Sankey diagrams is easy as pie

Building up Sankey diagrams is intuitive and only requires knowledge of a few basic functions of the software:

  • Set a process (node)
  • Draw an arrow between the processes
  • Drag&drop material or energy flow entries into arrow
  • Add quantity of material or energy

The correct width of the Sankey arrows is calculated and drawn automatically based on the flow quantities entered. Proportionality and scaling of flows is ensured, even when elements of the diagram are moved.

A label is created next to the arrow showing flow and flow quantity. It can, however, be adapted in many ways to match your individual style: adapt label font, rotate text, or choose a specific number format.

Test it now: download e!Sankey trial version

You can create the first professional Sankey diagrams within a few minutes. Try it out yourself with the free 14-day trial version of e!Sankey. It contains a large number of sample diagrams and also comes with a full user manual that will help you understand all functions of the software.

Many different options for arrows

Once the Sankey diagram with its arrows whose width is proportional to the flow quantity has been set up, it can be adapted and refined. Many different layout options are available in e!Sankey to make the diagram look good. Some examples:

  • Adapt arrow routing: instead of drawing the arrow directly between two nodes insert waypoints to determine the arrow routing. Also, you might want to define that arrows must dock at a specific side of the process symbol
  • Arrow heads can be turned on or off, shape and size of the arrow spikes can be set
  • Icons or images can be used as process symbols

Overview of all e!Sankey Features

A comprehensive list containing all features and functions of e!Sankey is available as document. Get an overview of the software quickly.

Export of diagrams as image file

After creating your diagram, you can export it as an image file, to show it in a report or to include it in a PowerPoint presentation. Scaling and image resolution can be defined in a dialog. The following graphical file formats are available:

  • PDF
  • EMF

When using the diagram exported in Microsoft Office applications we recommend e.g. the EMF format.

Updating Sankey diagrams with data from Microsoft Excel (from e!Sankey pro)

When doing monthly reports, or regularly publishing flow data, it is often sufficient to just update the values in the Sankey diagram.

To this end the Live Link to Microsoft Excel can be used: Flows in the Sankey diagram reference into cells in a workbook. When these values in Microsoft Excel change, the flow quantities are adapted and the arrows in the Sankey diagram updated accordingly.

By the way: this mechanism of updating Sankey diagrams with data fr0m external sources can also be automated using the e!Sankey SDK. This opens new possibilities to integrate Sankey diagrams in other software solutions, such as e.g. energy management software.

e!Sankey - version comparison

For a tabular version comparison please click here:

Visualization of stock changes (from e!Sankey pro)

Using this feature you can visualize e.g. storages (before input and after output).

These stocks will be displayed with proportional bars at the processes of your Sankey diagram.

Calculation of entries and flows through process operations (from e!Sankey calc)

Using the following operations you can specify your processes in order to calculate entries and flows in your Sankey diagram, e.g. if certain data is missing:

1. Sum:
Calcuates the sum of all input flows and creates a flow at output arrow.

2. Merge:
Takes all flows from all incoming arrows and passes them to the output arrow. Flows of the same entry will be summed up.

3. Difference:
Calculates the difference of the surrounding flows and creates a flow at the output arrow.

4. Split:
Takes all flows from all input arrows and passes them to the output arros. Flows are split by given ratio.

Get your license of e!Sankey now

Are you ready for drawing your first Sankey diagram? Just visit our secure online shop and get your license of e!Sankey, e!Sankey pro or e!Sankey calc. Updates within the current version level are included!

Customer Testimonial

Customer Testimonial

"Statistics can be boring, technical and taken out of context. Diagrams from e!Sankey connect the dots, show with colours the different orders of magnitude and as a whole make the data more fun and understandable to everyone. Diagrams from e!Sankey are very quick to make and are especially well suited in order to display energy systems, both at the industrial, local and national level."
Julien Morel, Energy Analyst, Swedish Energy Agency

Experts in Sankey diagrams

Experts in Sankey diagrams

Back in 2000 we already implemented the visualization of material and energy flows as an integral feature in our material flow analysis software Umberto. We thought it would be cool to also provide this Sankey diagram drawing features in an own, dedicated software. So, in 2007 we launched e!Sankey. And since it apparently hit a demand in the market, we have continued to develop it as a product of its own, and will do so in the future.

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