Project meeting of STEP at the site of the company ATS - Agro Trading & Solutions in Hardegsen (Photo: DBFZ)

Startseite Power Biogas Validation market potential System integration

Project ID 03EI5402

BioVent - Load management and provision of system services by rotting aeration fans of biowaste treatment plants to balance fluctuating renewable energies

Rotting aeration fans (source: IEE)


  • 01.01.2020 – 30.04.2022


Fraunhofer Institute for Energy Economics and Energy System Technology (IEE)
Königstor 59
34119 Kassel

Uwe Hoffstede – Projektleiter
Telefon: +49 (0) 561 7294-438
E-Mail: uwe.hoffstede‍@‍


03EI5402B - Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH

Associated partners

03EI5402 - EGST Entsorgungsgesellschaft Steinfurt mbH
03EI5402 - Kompostwerk Würzburg GmbH
03EI5402 - WEAG Wetterauer Entsorgungsanlagen GmbH

Cooperation partners



Planned results:

  • Plant level: plant modules/system components, retrofitting existing plant
  • Concept level: plant and information concepts
  • Data level: models/modelling, method, software
  • Market level: market forecasts, market-ready technologies and components
  • Publications: brochure and scientific papers


The project focuses on the possibilities of load management and the provision of system services by rotting aeration fans in municipal biowaste treatment plants to balance fluctuating renewable energies. The focus is on the optimization of the control of the rotting aeration as well as its integration into the electricity market.


The aim of the project is to make statements to which extent the power requirement of rotting aeration fans of biowaste treatment plants can follow the power supply, e.g. during high (fluctuating) feed-in power from wind and photovoltaic plants. Furthermore, it will be verified whether alternative or additional system services can be provided by these aggregates to stabilize the power grid (focus on control power). The options mentioned above should be examined with regard to technical, economic and ecological aspects and with regard to their practicability.



  • Analysis of regulatory and technical requirements for flexible loads and their market integration
  • Based on experimental investigations on practical plants, the technical feasibility and the economic benefit of the integration of the rotting aeration units into the electricity market via a virtual power plant and the possible contribution in the electricity supply system shall be demonstrated.
  • Obstacles analysis and recommendations for action from the energy industry point of view


  • Description of the status quo of plant and aeration technology in bio- and green waste composting in Germany, taking into account technical and regulatory framework conditions
  • In the course of experimental investigations, the effects of a changed operating mode of the rotting aeration fans are to be evaluated with regard to plant technology and process biology.
  • Obstacles analysis and recommendations for action from a waste management point of view



  • Energy industry, market integration, flexible loads, load management, system services, virtual power plant, techno-economic analysis, obstacles, recommendations for action


  • Waste management, biowaste treatment, plant engineering, aeration technology, own electricity use, process biology, hygiene requirements, obstacles, recommendations for action


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