The Berlin Energy and Climate Protection Program 2030 gives solar energy a central role, as it is the most important renewable energy source that can be developed locally. The state government wants to cover 25 percent of Berlin's electricity supply from solar energy as quickly as possible. In the densely populated city, this also requires the roofs of apartment buildings to be used. In the discussion format Wandelwecker on 8 September 2021, Fabian Zuber from the Reiner Lemoine Foundation and Ecologic Institute's Katharina Umpfenbach discussed options transforming the regulation of tenant electricity and local solar power supply. The event was moderated by Valentin Tappeser from IÖW. It became clear that solar expansion can only be achieved at the required speed with a fundamentally new regulatory approach centered around joint self-supply that intelligently links on-site power generation via solar systems with charging of electric vehicles and heat generation.

On 17 June 2021, representatives from Berlin's public administration, business and civil society discussed how to accelerate the expansion of tenant electricity in Berlin in the virtual expert workshop of the StromNachbarn project. Practical experience inputs enriched the discussion.

To achieve climate neutrality by 2050, EU policy will have to be reoriented – from incremental towards structural change. As expressed in the European Green Deal, the challenge is to initiate the necessary transformation to climate neutrality in the coming years, while enhancing competitiveness, productivity, employment. To mobilise the creative, financial and political resources, the EU also needs a governance framework that facilitates cross-sectoral policy integration and that allows citizens, public and private stakeholders to participate in the process and to own the results.

For Germany to reach its climate targets, new ways of thinking mobility are essential. For the federal state of Lower Saxony, the mobility transition is particular challenging due the important role cars play in the region. The report "Ways to Sustainable Mobility" (WenaMoNi) analyses in detail where Lower Saxony stands and proposes next steps. Ecologic Institute analysed the legal framework and identified key actors promoting electric and hydrogen-based mobility. Katharina Umpfenbach and Ricarda Faber compared the existing policy instruments to best practices in other countries and to recommendations from science. The analysis shows that a policy approach built on subsidies which has been favoured so far, must be supplemented by pricing instruments if climate targets are to be reached.

On 30 April 2021 at the online Berliner ENERGIETAGE, the research network Ecornet Berlin presented how tenants can benefit from the energy transition.

Tenant electricity systems generate solar power on apartment buildings and deliver it directly to the households in the building. In a new study, Katharina Umpfenbach and Ricarda Faber (Ecologic Institute) evaluate the effects of the existing tenant electricity systems in Berlin. The bottom line: Berlin's 74 tenant electricity projects have positive ecological and socio-economic effects, but these remain low compared to the technically available potential. Currently, only 1 % of the tenant electricity potential is used. The study is available for download.

Between 15 and 18 September 2020, Ecologic Institute together with ZOE Institute for future-fit economies and other partners convened a "closed-doors" EU online conference on long-term challenges from the COVID-19 crisis for the EU's economic governance and the implementation of the Green Deal.