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Funding Strategies for Sustainable Rooftop Gardens

Discover alternatives to personally funding a green rooftop, as the Programme Manager of Rotterdam demonstrates the methods.

Financing a green roof without self-funding is possible, as detailed by the Program Manager in...
Financing a green roof without self-funding is possible, as detailed by the Program Manager in Rotterdam. Here's how.

Funding Strategies for Sustainable Rooftop Gardens

Relax, folks! Let's chat about greening your home on a budget, shall we? We've got the lowdown on navigating the financial side of sustainability right here.

We spoke with Johan Verlinde, the Programme Manager of Rotterdam's climate adaptation plan, known as WeatherWise. He brought us up to speed on the essential players needed to secure financial support and the key parties to involve. Remember, it's not just the property owners' responsibility to bear.

WeatherWise started rolling in 2017 and focuses on six key areas under the umbrella of climate change: heavy rainfall, heat, drought, land subsidence, groundwater, and flooding from rivers and the sea. The program researches and prepares cities for potential climate hazards. Beyond these themes, WeatherWise dabbles in several areas:

  1. Public space: Rotterdam's got approximately 40% public space, while the rest is privately owned.
  2. Existing built environment: Renovations, green rooftops, and repurposing existing buildings are all on the table.
  3. New developments: Making sure all new developments are climate-proof is crucial.
  4. Public participation: We're aiming for all citizens and private sectors to work together on climate adaptation.

Financial Incentives

For those eager to go green with their building, there are ways to do it without breaking the bank. Rotterdam boasts a subsidy program for every square meter of greenery added, as well as water storage. Plus, planning assistance is generously offered, helping building owners determine the best options for their unique needs.

It's essential to remember that subsidy programs can differ significantly from country to country, and even city to city.

In the Netherlands, for example, water management responsibilities are shared among the city and water authorities. The city takes care of sewage and stormwater capture, while the water authority manages wastewater treatment facilities and surface water within the city. If a building owner installs a green rooftop, it benefits both the city and the water authority since it reduces the flow into the sewer system, decreasing the amount of water flowing through to the wastewater treatment plants. So, the city offers financial incentives for this eco-friendly move, says Johan!

Rotterdam also partakes in various European funding programs, such as Sponge, LIFE UrbanAdapt, Life@Urban Roofs, and Interreg.

The Power of Stakeholders

Engaging stakeholders is crucial in the successful realization of green roofs, according to Johan. The two most vital stakeholders? Geology corporations, due to their extensive building investments, and private homeowners.

Recently, Rotterdam has forged an agreement between the Deputy Mayor and the boards of social housing organizations, which has taken on the responsibility of climate-proofing their buildings—primarily through green roofing. As the Netherlands boasts one of the highest proportions of social housing in Europe—representing 28.7% of the country's total housing market in 2018—this is no small feat.

Other potential stakeholders may include citizens' and neighborhood associations, tenants, private homeowners, various companies, governments, NGOs, housing corporations, and educational and research institutions.

In 2018, Dutch cities, provinces, regional water, and central government agreed on a Climate Adaptation Administrative Agreement, allocating €600,000,000 for climate adaptation over the coming years.

To better understand stakeholder engagement, check out the Urban Green-Blue Grids' free online guide, which outlines the necessary steps, such as identifying stakeholders, collaborating with them, combining interests, listening to their ideas and concerns, and committing to the final goal.

Encouraging Private Landowners

With stakeholders on board, the next challenge is convincing private individuals to invest in green roofs. Johan offers some simple solutions:

  1. Highlight the Benefits: Show property owners the advantages of green roofs, and highlight real-life examples. This can make potential buyers more willing to invest.
  2. Inspire Action: Create motivation, rather than enforcing regulations that require green roofs.
  3. Clear Communication: Keep potential investors informed about available funding and initiatives.

Rotterdam's neighborhoods have a WeatherWise program that involves every neighborhood in tailoring solutions to address specific problems in individual areas. "Each neighborhood has its unique characteristics, residents, climate problems, and building designs," Johan says. The city initiates dialogues with every neighborhood, discussing local climate issues, future actions, and the steps residents can take to ensure their neighborhood remains livable. Solutions often include green roofing but can also involve starting a garden, greening facades, or interventions in public space. In Johan's words, "Together, these would be good solutions."

"The bottom line is, we're willing to help our residents communicate and implement successful green roof initiatives."

Additionally, the City of Rotterdam is proactive in communicating with its residents. They establish websites, create content for YouTube, and engage on social media. Most of the time, landowners reach out to them, presenting ideas and seeking possibilities.

So, What's the Hitch?

Even with available subsidies, not everyone can access the funds to green their roofs. "Green roofs tend to be more expensive than standard roofs, but they pay off in the long run," Johan notes. The membrane for a conventional roof requires major repairs every 20-25 years, while a green roof membrane potentially lasts doubles that time.

Improvements are needed to fund those able to afford green roofs. "Not everyone can invest upfront in a green roof," Johan emphasizes. "We need to think more inclusively, ensuring the benefits are accessible to all—not just those with the financial means."

The Fix?

Johan stresses the importance of politicians recognizing green roofs as a solution and allocating budgets for them. "Securing funding takes significant money, so transforming every roof in a city into a green one is no small feat," Johan points out.

According to WWF's 2021 Introducing SUSREG report, "Governments have the responsibility to enact ambitious sustainable development strategies backed by the necessary fiscal and regulatory measures, thereby sending clear and ideally long-term policy signals."

Wrap-Up

Financial constraints have long posed challenges, especially when transformative, long-term changes don't offer immediate benefits. But tackling climate change demands collaboration, financial support, and leveraging the combined strength of organizations, stakeholders, and governments to move towards a greener future. By engaging stakeholders, inspiring action, communicating effectively, and offering incentives to green their homes, we'll be that much closer to building a greener, more sustainable Rotterdam.

  1. Despite focusing on climate-change, Rotterdam's WeatherWise program delves into various areas, including public space and the existing built environment.
  2. In Rotterdam, a subsidy program offers financial incentives for every square meter of greenery added and water storage.
  3. Johan Verlinde, Programme Manager of Rotterdam's climate adaptation plan, WeatherWise, highlighted the importance of stakeholders in the successful realization of green roofs.
  4. Geology corporations and private homeowners are the two most vital stakeholders to engage for green roof initiatives, according to Johan Verlinde.
  5. Social housing organizations in Rotterdam have taken on the responsibility of climate-proofing their buildings, primarily through green roofing.
  6. The Urban Green-Blue Grids' free online guide outlines the necessary steps for proper stakeholder engagement, including identifying stakeholders, communicating interests, and committing to the final goal.
  7. To encourage private landowners to invest in green roofs, Johan suggests emphasizing benefits, inspiring action, and clear communication about available funding and initiatives.
  8. Green roofing solutions, presented by Johan, often involve neighborhood discussions, local climate issues, and interventions in public space, gardens, or facades.
  9. The City of Rotterdam actively communicates with its residents, establishing websites, creating YouTube content, and engaging on social media to assist landowners in green roof initiatives.
  10. Reducing green roof installation costs is essential to ensure the benefits are accessible to all, not just those with financial means.
  11. The WWF's 2021 Introducing SUSREG report calls upon governments to enact ambitious sustainable development strategies backed by fiscal and regulatory measures to send clear policy signals and move towards a greener future.

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