The Energy System Description Language (ESDL) aims to support energy system issues in the broadest sense. There are therefore many different domains where we use ESDL.
The main domains are:
- Heating networks
- Business parks
- System integration in the North Sea
- Spatial planning
- Industry
- Regional energy transition
Heating networks
Within the WarmingUp program we started developing tooling for the design of heating networks. The first version of the WarmingUp Design Toolkit was developed within this project. In the current program New Heat Now, this software is being further developed. TNO is doing this together with development partners TPG and Deltares.
The software can be used to design, simulate and optimize heating networks.

Business parks
Within projects such as EIGEN and DICE, work is being done on tooling to support the making business parks more sustainable.

System integration in the North Sea
Within the TKI project North Sea Energy 5, TNO is working with partners to develop a integrated tool suite for calculating system integration challenges in the North Sea.
Spatial planning
In the program Space for Energy TNO has developed the Spatial Energy Explorer, among other things. This explorer enables regional governments and grid operators to gain insight into the impact of policy plans on grid operator infrastructure.
Industry
Also in the domain of industry there are more and more applications of ESDL. Within the Gridmaster project, TNO together with Siemens, Quintel, Stedin, Tennet and GasUnie developed a multi-model to identify no-regret investments in the grid operator infrastructure as a result of the sustainability of the industry in the port of Rotterdam.
In 2024 we made a first start with translating the MID database to ESDL.

Regional energy transition
The applications within the regional energy transition domain are described as possible use cases of the ESDL MapEditor ESSIM tool suite.