Where we will solve this challenge?

Check out the map to see all the cities that face similar challenges in this area!

How important is the air you breathe?


Over exploitation or destruction of trees and wastage of energy sources plays both direct and indirect roles in the well being of our nature.

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What are the ways and means to limit the global warming to 2⁰C?


According to the International Monetary Fund (IMF) report, the effective price of CO2 emissions will have to rise to $75 per ton by 2030, compared to a global average of $2 per ton today”. How can this be achieved in order to meet the Paris Agreement’s target.

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How to reduce light pollution in Ljubljana


At night time the city is light up in all its glory. However, the light creates a special form of pollution that affects both the inhabitants as well as the city's animals.

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Measures to be implemented in port premises for the capture of CO2 and their application in the port


How could we use carbon capture technologies in port facilities? The answer will take into account three aspects: Identification of suitable CO2 sources, the implied logistics within the port (collection, storage and distribution) and the valorisation of the captured CO2.

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How can a Video Clip convince citizens to build Solar Panels on their roofs?


Fossil Free Karlsruhe is a regional NGO which started an initiative called FAKTOR2 in the city of Karlsruhe, Germany. More information can be found on their websites: [...]

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How Nijmegen can be energy-neutral in future?


We can draw a great deal of energy from the sun and wind. That is smart and necessary. We are transitioning to a new system of sustainable energy.

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How to reduce energy consumption in Warsaw?


Warsaw is the largest city in Poland, so no one will be surprised that it uses a lot of energy. Reducing the demand in a fast-growing city is a big challenge.

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How can we support a rapidly growing electricity demand using clean energy?

Phnom Penh

A continuous supply of stable electricity is important to support the growth of the economy in Cambodia. Electricity shortages in the dry season when climate change is inducing more severe droughts, reducing the hydropower outputs. How can we use the clean energy technology to power our economy?

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How to become aware of energy consumption of buildings and incite retrofitting and behaviour change?


70% of greenhouse gas (GHG) emissions in Brussels is caused by the heating of buildings. Insulation of buildings is significantly reduces energy use. The challenge is to make owners and tenants aware of the potential for GHG emission reductions by investing efficiency measures and change of attitude

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How do we make energy more sustainable?

Cities consume 78% of the world’s energy and produce 60% of its emissions. As urban population increases worldwide, cities are crucial to emission reduction efforts.


Cities have a key role to play in the energy transition which is central to address climate change and resource scarcity. Cities tend to build and implement local energy strategies, often ignoring the global issues, and fail to consider mid-term and long-term scenarii. However, many European cities are increasingly attempting to define their local energy strategies integrating both economic and environmental impacts. Copenhagen (Denmark) aims to become the first carbon neutral city by 2025 and Perpignan (France) produces all the electricity for its residents locally by 2015. In order to be effective in their energy transition, cities need to coordinate local stakeholders, provide detailed and relevant diagnosis of their region, and identify the potential for energy savings and renewable substitution. Mid and long-term strategies need to integrate the whole energy value chain, from production, distribution and consumption.

Fields that need to be improved to reach a future of sustainable energy in the cities:

  • The transport sector is responsible for approximately a quarter of total energy-related CO2 emissions.
  • The built environement is of the utmost importance to increase energy efficiency and the use of renewable energy sources.
  • Energy transition to a renewable energy system.
  • Energy efficiency has to be increased at all stages of the energy chain.
  • There is a growing need of new energy storage solutions and innovation
  • Low carbon energy transport system has to be developed, etc.
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