InWaMod

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Project Description

InWaMod – Innovative heating service models: New ways to overcome the tenant-landlord dilemma in energy-efficient modernisation, sub-project: Shaping of the regulatory framework

The German government wants the country's building stock to be carbon neutral by 2045. How can this be achieved? The rental housing sector is particularly problematic in this regard, as the current legal situation leads to the so-called ‘landlord-tenant dilemma’, with the result that the required renovation rates in the rental housing stock have so far been significantly missed.

Not only because of the CO2 tax and the sharp rise in energy prices, the issues of energy saving, heating costs and socially acceptable and efficient climate protection are more relevant than ever in the rental housing market. This makes the issue of energy transition in the rental housing sector even more urgent.

This is where the transdisciplinary joint project InWaMod comes into play. It aims to analyse new billing models for the rental housing sector, specify plausible heating service models – rent including heating costs and heat supply – and then test their effectiveness under various boundary conditions with regard to the aforementioned CO2 neutrality and issues of fair burden sharing.

Key factors include:

– Legal feasibility and regulatory options

– Digital control of energy flows

– Comprehensibility and acceptance by users, property managers and owners

– Calculation of economic and environmental savings.

Contribution of the Department

The Department of Civil Law, Corporate Law and Competition Law, University of Kassel, is resolving the various legal issues of the InWaMod-project within the sub-project ‘“Shaping of the regulatory framework”’.

Publications

Möller/Ruttmann/Deckert/Gill: Teilwarmmietmodelle zur Lösung des Vermieter-Mieter-Dilemmas: Eine vergleichende Untersuchung und rechtliche Analyse, in: Leonhardt et. al. (Hrsg.): Innovation und Kooperation auf dem Weg zur All Electric Society. Nachhaltige Entwicklungen durch gesellschaftliche Akzeptanz, Springer Gabler 2025, S. 377 ff.

Deckert, M./Ruttmann, C., Sanieren für den Klimaschutz: Neue Anreize zur energieeffizienten Gebäudemodernisierung?, NZM 2024, 209-217.

Coordination and Members of the Project

The InWaMod joint project is coordinated by Prof. Dr Bernhard Gill (LMU Munich).

Other members include:

- IWU (Institut Wohnen und Umwelt, Darmstadt),
- Westsächsische Hochschule Zwickau,
- Jenawohnen GmbH (municipal housing association, Jena),
- Brunata-Metrona GmbH (Hamburg),
- University of Kassel, Department of Civil Law, Corporate and Competition Law.

Further information about the project members can be found below:

Sponsors and Research Networks

The InWaMod joint project is being funded for two and a half years by the Federal Ministry for Economic Affairs and Energy as part of the ‘Energy Transition and Society’ funding priority of the German government's 7th Energy Research Programme.

The InWaMod project is part of the research network ‘Energie und Gesellschaft’, which is supported by ‘BEWEGT’ – the new support research programme for the funding priority ‘Energy Transition and Society’ in the Federal Ministry for Economic Affairs and Energy’s energy research programme.

Further information on the sponsors and networks can be found below: