Companies want an uncomplicated and cost-neutral switch to green processes. However, the great uncertainty in the industry makes it clear that this conflict of objectives is not easy to resolve. The supposedly simple replacement of fossil fuels with renewable energy sources such as hydrogen is proving to be economically viable in only a few areas. Electrification is a tempting option, as it is easy for industry to obtain electricity from the grid.

However, hurdles arise with the available connected loads and the electrical heating systems that are not yet established for many processes. Uncertainties regarding the future political framework are making managers reluctant to make major investment decisions. Partial solutions that are profitable in the short term are often implemented and strategic decisions for the future are postponed.

Energy supply concepts for industry

The Institute of Solar Research has extensive experience in the field of renewable heat generation through its work on solar thermal power plants. The expertise in the field of plant design, detailed modelling, simulation and economic evaluation is used to develop customised energy supply concepts for industrial needs. To this end, the researchers are developing scientific methods in the area of modelling complex, time-dependent systems. One focus of the work is on the development of systems for creating conversion schedules for industrial operations.

In principle, all energy sources that can be utilised at the respective location are considered in the concepts, such as grid electricity, on-site photovoltaic power generation and solar thermal energy, renewable fuels, geothermal energy and waste heat utilisation. Depending on the application, solutions already available on the market are used. However, there is often potential in innovative technologies that are still at the development stage. In joint projects with technology developers within and outside the German Aerospace Center (DLR), the Institute of Solar Research is working on the development and demonstration of these solution paths.

While scientific method development is driven forward in in-house projects, employees work closely with industrial stakeholders in research and development projects and direct commissions in order to develop the best concepts for the respective application. One focus is on solutions for the chemical industry in Germany.