Photovoltaics in apartment buildings offer great potential for a sustainable energy supply. However, implementation requires well-thought-out solutions, particularly regarding fair billing under the tenant electricity model and ensuring economic viability given current feed-in tariffs. Technical challenges such as grid connection and storage integration can be overcome with modern technology, while legal and tax frameworks require careful planning. Transparent communication can also boost acceptance among co-owners and tenants and facilitate their access to affordable solar power.

In the 13th and final part of the comprehensive online information session on Wednesday, May 27, 2026, from 6:00 p.m. to 7:30 p.m., a general introduction to the topic of photovoltaics in multi-unit residential buildings will be provided, aimed at building owners, homeowners’ associations, individual owners, and construction companies. 

During the event, key technical terms will be explained to participants, and insights will be provided into various operational concepts, economic feasibility analyses, administrative aspects, and the legal framework. The seminar thus provides a practical guide to decision-making regarding the installation of photovoltaic systems on multi-family buildings. 

The hands-on presentation allows participants to clarify questions directly with the experts so that they can subsequently move forward with their own PV projects on multi-family buildings. 

This event concludes the 13-part online seminar series on Solar and Heat.

“I am very pleased that we are able to organize such an innovative event as part of the ‘Solar’ online seminar series and offer it free of charge, because the untapped potential of multi-family buildings is enormous, and this allows tenants to participate in the energy transition as well,” said Janina Steinkrüger, Head of the Environmental Department, summing up the exciting conclusion of the 2026 series. 

The information series was organized by the climate protection managers in collaboration with the adult education centers and the consumer advice center in the Rheinhessen-Nahe and Vorderpfalz regions. 

For more information on the solar initiative of the state capital Mainz, visit www.mainz.de/solarinitiative. (opens in a new tab) 

The presentations complemented the vendor-independent energy counseling services provided by the Rhineland-Palatinate Consumer Advice Center, which continues to offer free, personalized consultations on topics such as energy conservation, the heating transition, and energy-efficient renovations.