How does your city deal with increasing heat? What can you do to protect the urban population from the impacts of heat burden in cities?
We would like to invite you to learn from the intensive exchange of expertise between the cities of Aswan in Egypt, Heidelberg and Lüdenscheid in Germany, Mombasa and Nairobi in Kenya and Lviv in Ukraine. The experts jointly identified and analysed challenges and developed locally-adapted solutions in the form of pilots that were implemented in their respective cities. We would like to present and discuss the results of the two-year deep dive process ‘Heat in the city’ on 12 June 2025, from 9:00 – 12:00 am:
You will have the opportunity to ‘dive’ into the projects and understand which key elements are important for successful implementation and upscaling in the future. In Lüdenscheid, efforts began with forming a multi-departmental core team to guide the development of a comprehensive heat action plan tailored to the city’s needs. Meanwhile, in Aswan, an integrated heat action framework was developed to address the unique challenges of the region’s hot climate. In Mombasa, initiatives focused on raising awareness and mapping urban heat island hotspots to inform better both stakeholders and citizens. Similarly, in Nairobi, schools became the focus of heat mitigation efforts, using temperature data to guide the strategic planting of shade-providing fruit trees, complemented by awareness programs aimed at students and educators. Meanwhile in Lviv, the participatory initiative of pocket parks was successfully launched in three different sites. Heidelberg is planning both to create a climatological database for all public spaces and outdoor areas and to develop up to three best practice examples for urban heat mitigation in public spaces.
The event is aimed at municipal experts from Germany and around the world as well as at potential donors and financial institutions who may be interested in supporting the projects. We look forward to welcoming you!
The working language of the event is English. In order to attend the meeting, subscribe here.
The initiative “Making My School More Beautiful,” led by five women elected for the municipal council of Yarmouk al-Jadida municipality in Jordan, showcases a successful model for promoting democracy and empowering girls through school parliaments. By collaborating closely with local communities, schools, and mothers, the project not only enhanced school environments but also fostered civic awareness and active participation among young women. Its structured approach offers a replicable framework for similar initiatives in other communities.
Naivasha, Kenya | 14–17 April 2025 – Green hydrogen is gaining global attention as a key energy carrier for the future. While much of the discussion centres on export potential, green hydrogen production also holds significant potential for local development—boosting municipal infrastructure and stimulating local economies, especially in Africa, where the continent’s high potential for solar and wind energy brings African cities in a unique position to become innovation hubs and key drivers in the global energy transition.
To foster exchange of experiences and best practices between African and German cities, Connective Cities organised the workshop “Exploring the Potential of Green Transition for Local Economic Development”, bringing together over 30 municipal professionals from both regions.
The role of cities in promoting green hydrogen
The workshop, which focused on the role of cities in advancing green hydrogen as a lever for sustainable economic growth, facilitated a peer-to-peer learning space for municipal actors to exchange experiences, address challenges, and explore pathways for green hydrogen adoption at the local level.
Municipal strategies and shared challenges
Photo: Connective Cities
A central focus of the exchange was how technological innovation can align with local development needs. Discussions ranged from decentralised hydrogen production systems and seawater electrolysis to the use of organic waste as a renewable source. Especially for coastal or water-scarce cities in Africa, such technologies were seen as promising solutions to local resource constraints.
However, participants agreed that technology alone is not enough. Effective local hydrogen strategies require strategic urban planning, transparent land management, and strong community engagement. Several municipalities shared examples of inclusive planning processes, involving traditional authorities and local universities in shaping future-oriented land use plans and infrastructure projects.
Peer Learning Session | Photo: Connective Cities
Participants from countries including Namibia, South Africa, Mauritania, Kenya, and Germany presented concrete initiatives demonstrating how hydrogen projects can generate local value. The example of Arandis (Namibia) illustrated how targeted investment and strategic partnerships are enabling the town to position itself as a production hub for green hydrogen. In contrast, the Heilbronn region (Germany) focuses on the application and industrial use of hydrogen, building a regional value chain by attracting user industries and technology providers.
Furthermore, Karlsruhe (Germany) showcased a successful ecosystem for start-ups working in hydrogen technologies, supported by research institutions and public-private partnerships. Across all cases, one message became clear: municipal masterplans and coordinated strategic planning are essential for cities to fully benefit from the emerging hydrogen economy.
The discussions underscored the growing role of cities not only as implementers of national energy goals, but as active shapers of the green transition. The workshop aimed to empower municipalities to position themselves as testing grounds, innovation platforms, and investment destinations within a future green hydrogen economy.
Outlook and next steps
The workshop concluded with a strong call for municipal leadership in developing local hydrogen strategies that reflect both environmental ambitions and socio-economic priorities. Participants identified three key areas for action:
Local value creation: Prioritising domestic use of hydrogen for local industries – such as fertiliser or building materials – rather than relying solely on export models.
Education and skills development: Aligning vocational training and higher education programmes with future labour market needs in the hydrogen sector.
Partnerships and knowledge exchange: Strengthening peer-to-peer learning and cooperation among municipalities through platforms such as Connective Cities.
Participants also highlighted that green hydrogen offers more than energy solutions – it can help create future-oriented jobs, stimulate innovation, and improve urban living conditions. By linking clean energy production with economic development, municipalities can promote both resilience and inclusivity.
The workshop in Naivasha confirmed that green hydrogen can become a key pillar of sustainable urban development – provided that cities take a proactive role. Where political commitment, technical capacity and community participation come together, green hydrogen has the potential to drive long-term prosperity and shared growth.
Photo: Export-Akademie Baden-Württemberg
“Whether peer learning sessions, inspiring impulses or practical insights into hydrogen strategies, sustainable mobility and local project development – the variety of formats impressively demonstrated how much potential there is in partnership-based cooperation.“
– Felix Sossalla, Wirtschaftsförderung Raum Heilbronn GmbH (LinkedIn, translated)
“We’re looking forward to partnering with more cities, industries, and changemakers who share our vision for a greener, more inclusive future. Let’s create the green cities of tomorrow — together.”
A new district for administration, housing, social affairs and culture is being built on the large site of the former administrative building for the Federal Statistical Office – Haus der Statistik – in the center of Berlin. A civil society initiative had prevented the demolition of the existing building from the 1960s and, together with the administration and other stakeholders, developed the concept for the conversion – a beacon for alternative approaches to urban development.
In order to enrich and enlarge the network, the group organizes a peer-to-peer meeting on the topic Voluntary Subnational Review on May 7 at 3 p.m. (CET). The Voluntary Subnational Review is a reporting tool that allows a countrywide localization of the SDGs from the perspective of municipal administrations. By drawing up the Voluntary Local Review, municipalities provide the basic data for a detailed analysis of the local sustainable development. By aggregating these data, a country obtains a comprehensive and detailed overview of the implementation of the SDGs. Meanwhile, municipal administrations are more represented at a national level and can present a united front with regard to national development policies.
Through the support of Local Government Associations, the creation of the Voluntary Subnational Review can be quick and effective. During the peer-to-peer meeting, representatives from South Africa and Germany will present their recent efforts in the creation of their Voluntary Subnational Reviews. After the presentation, we will open the stage for a broader discussion about the Voluntary Local and Subnational Review.
During the process of redefining a building’s purpose and outlining the procedure and financing of the venture, constructions might fall vacant. A vacant building is wasted potential in many ways, for both the community and the cities’ urban development.
Moreover, an unused building often leads to an increase in visual and atmospheric pollution due to the accumulation of waste, water infiltration and possible growth of mold or toxic materials. Besides these ecological consequences, vandalism may increase as well as insecurity in the surroundings. Hence, the revitalisation of vacant buildings can come costly to municipalities and possible investors.
How can vacancy be avoided? Opening public buildings to interim use was one of the topics that participants of the learning process “2nd Hands on Public Buildings” wanted to focus on during the one-year-long learning process on reusing public buildings from the 1960s and 1970s. Therefore, experts from Germany, Kenya, Palestine and Montenegro came together virtually on March 12, 2025.
During the meeting, the German guests Oliver Hasemann, ZwischenZeitZentrale Bremen, and Moritz Tonn, Transiträume e.V., elaborated on the facilitation of interim use in Bremen and Berlin. With years of experience and quite some examples of moderating agreements between the buildings’ owners and users, the inputs allowed for a general understanding of the opportunities and challenges related to intermediate tenants. Given the vibrant cultural scene in Berlin, Transiträume e.V. has successfully allowed artist to transform vacant halls to impressive exhibition spaces, attracting large numbers of visitors. Among other, ZZZBremen showcased its “Wurst Case” (translates into “Sausage Case”), in which a sausage factory was reused involving the public in an extended participation process. The factory was then rented in a small scale to local entrepreneurs, artists, and for social initiatives and artisans testing of various kinds of use (offices, workshops, studios).
Giving the buildings a temporary use helps their protection, reduce the operational and maintenance costs for public vacancy and can support the cultural and creative industry. Through the participation of neighbourhoods, the interim use of vacant buildings also helps revitalizing disadvantaged areas. The main challenges consisted in setting a frame for interested users, which means to create the basic infrastructure and the legal framework for working in the abandoned buildings as well as finding sponsorships and raising awareness for the new project.
Based on these inputs, the group of experts discussed their project examples and ideas regarding a possible temporary use. Twenty floors of the former Hilton Hotel in Nairobi are currently vacant and the participants were interested in how interim use might lead to the attraction of possible investors. Although in one case an investor who had visited an exhibition in Berlin had finally bought the complex, the guests stated that this was not the main objective of interim utilisation. Financing was also a concern of a participants from Montenegro and Regensburg.
The consense was that those who profit most from the interim use should also be hold financially responsible. In most cases, tenants only pay a symbolic rent, but their conservation of the building presents an economic advantage for the owner. Cases are very individual. In Regensburg, the activation of central heating in the concerned building would have caused high costs. While the guest suggested house in house solutions, Regensburg had yet found creative forms of interim use and offered the fireguard and police to use the building for training purposes. Asked from Hebron, questions concerned the public participation process and best practices. The ongoing Connective Cities learning process will offer another follow-up activity on the involvement of the public, soon.
„Think about your interim project from the end. How is it guaranteed that the project ends in everybody’s consent?” Oliver Hasemann, ZweischenZeitZentrale Bremen
With four million inhabitants, the Jordanian capital is home to around 40 per cent of the country’s total population. In 2021, Amman’s city administration, the Greater Amman Municipality (GAM), decided to create a VLR – the first in the Arab region. In the summer of 2022, the VLR was finalised and presented together with the Voluntary National Review (VNR) at the UN High-Level Political Forum in New York.
The VLR has proven to be a complete success – both as an analytical tool and as a process:
An ‘ecosystem’ for collecting validated data has been developed.
Sustainability goals (SDGs) were integrated into various areas of policy, strategy development and administrative action.
New formats for citizen participation were trialled.
New projects and partnerships were initiated and ongoing ones strategically interlinked;
The digitalisation of the administration is very advanced.
The simultaneous creation of VNR and VLR ensured policy coherence and mutual support between the two levels.
Are you an expert in the interim use of buildings? If so, we would be delighted to welcome you to a Connective Cities expert meeting, where participants in the Connective Cities learning process ‘2nd Hands on Public Buildings’ will learn about the work of ZwischenZeitZentrale Bremen and Transiträume Berlin e.V. and discuss examples of their projects with experts in this field. The exchange of expertise will take place online on March 12, 2025, from 9:00 a.m. to 10:30 a.m. via WebEx (alternative date as the meeting in February was cancelled).
For ecological and, increasingly, economic reasons, the reuse or conversion of buildings from the 1960s and 1970s is of interest to municipalities and their building stock. The Connective Cities dialogue event in cooperation with the Berlin Senate Department for Urban Development, Building and Housing from 24 to 27 September 2024 was dedicated to this paradigm shift. Around 30 municipal experts from Germany, Kenya, Montenegro, the Palestinian Territories, Zambia and Ukraine exchanged views on solutions and challenges for the sustainable reuse of public buildings and jointly developed project ideas. The ongoing one-year learning process of Connective Cities on the reuse and repurposing of modernist buildings offers further insights into the topics discussed in Berlin and the opportunity to develop concrete solutions through exchange and study tours. On March 12, 2025, we will focus on the topic of ‘interim use’, which arose during the event, particularly for participants from Nairobi. All objects and project examples provided by the participants can be found in this publication.
The Deep Dive celebrated another milestone in the two year long process, with the latest workshop being held in Aswan – Egypt from 21st to 23rd January 2025. The workshop marked the transition from the phase of piloting of solutions towards optimization and upscaling. Participants representing the cities of Nairobi, Aswan, Mombasa, Lüdenscheid, Heidelberg and Lviv (virtually) discussed the results of implementing their pilots. Additionally, participants had the opportunity to learn about projects and initiatives implemented in Aswan governorate that are relevant to sustainable urban development and urban climate action.
Program
The workshop activities were carried out over three days, and included peer advisory activities, presentations and a technical input from Prof. Jürgen Kropp from the Potsdam Institute for Climate Impact Research (PIK) in addition to an excursion in Aswan. A series of peer-to-peer exchanges between the participants who are working in different local conditions was facilitated. During the first day, the participants discussed their key learnings from the implementation of their pilots and elaborated on the measures taken to ensure co-creation with relevant stakeholders and the sustainability of the pilots’ results. Furthermore, a keynote from the deputy governor of Aswan, Mr. Amr Lashin, shed light on efforts to transition towards human-centric urban development in the governorate. The introduction also included a presentation from UDF’s general manager for international cooperation and community participation, Dr. Marwa Soliman, which delved into the role of the Urban Development Fund (UDF) and its numerous projects on integrated urban development and urban climate action.
This was followed on the second day by a series of exercises that guided the participants into identifying areas for optimization in their pilots and methods for upscaling including 1) standardization of design and replication, 2)planning incremental upscaling, 3) financial and human resources allocation, 4) redefining the anticipated risks given the wider scale of implementation, and 5) monitoring of progress including the definition of key performance indicators.
The final day incorporated a session on reflections from the participants on their experiences throughout the implemented stages of the Deep Dive in addition to a hybrid session with Prof. Kropp, who addressed their questions on various technical topics including 1) using artificial intelligence in climate research and devising of solutions, 2) channeling climate finance to implement measures for mitigation of urban heat, 3) existing affordable solutions that are of high impact, 4) cities and local governments position in international climate talks such as the COP29, and 5) building climate-resilient health systems. These topics will be the focus of a series of virtual sessions that will be held in the upcoming months with Prof. Kropp and PIK.
Documentation of the Connective Cities dialogue event from 24 to 26 September 2024 in Berlin.
Public buildings from the 1960s and 70s are a common feature of many cityscapes around the world. Today, they rarely meet the 21st century’s technical, energy and aesthetic requirements, and are frequently demolished and replaced with new buildings. However, they have great potential for reducing emissions in the construction sector, thereby contributing to climate change mitigation.
At the dialogue event, almost 25 municipal experts from Germany, Kenya, Montenegro, the Palestinian territories, Zambia and Ukraine exchanged views on solutions and challenges for the sustainable reuse of public buildings from the 1960s and 1970s and worked together to develop project ideas. New concepts often include multifunctional use for residential, social, educational, cultural, retail and office space.
