Energy efficiency is the key component of sustainable development in cities

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Energy efficiency is the key component of sustainable development in cities

 

The UN Habitat New Urban Agenda was released a few weeks in Quito, Equador. The task to write a new urban agenda has not been easy, given that pre-conditions and interests are different in different UN countries. At the same time, there is an urgent need to act in favour of sustainable development in cities.

 

The striking fact is that urban settlements covers roughly 2.7% of the surface area of the globe, but consume 70% of resources and hence produces 75% of CO2 emissions. Moreover, we face many challenges if we are to transform our cities into healthy, safe and comfortable living and working areas.

 

Starting from these pre-conditions, the New Urban Agenda for the first time highlights the importance of energy. As is well-known, energy production is the main source of CO2 emissions and air quality problems in cities. Energy is needed in cities for transport, heating, cooling, lighting as well as for water and sanitary systems. We also need energy to run equipment and appliances. To transform ourselves into low carbon society, we need to de-carbonise our energy production, but also, very importantly, we need to use energy more efficiently. Energy that does not need to be produced is the most environmental friendly. Energy efficiency is not only beneficial in preventing pollution but is also a key component for resilient cities. Energy efficiency entails reducing overall demand and more importantly reducing peak demand. In combination with smart technologies, demand can be controlled based on self-learning and adaptive algorithms to reduce and shift the demand even more efficiently without compromising users’ well-being, but rather in ways that can also further enhance well-being.

 

Smart cities and efficient resources

 

In addition to energy, the concept of smart cities was for the first time raised onto the agenda. The concept of smart cities is quite unique, since it is applicable both to industrialised cities/districts and to developing economies. The benefit of smart cities is that by using easy-to-install and adaptable sensors and self-learning control algorithms, existing infrastructure can be made more efficient. Moreover, new methods allow for generating urban services more efficiently in developing countries, without heavy and costly infrastructure requirements. Good examples for this are the implementation of renewable energy sources for cities and communities. In addition, smart communications enable citizen engagement and ownership within their own living areas, which evidently improves the perceived living quality and attractiveness of the area.

 

Smart systems enable us to use our resources more efficiently. This can be done by using and combining data from different sources. Currently, in modern buildings, there are typically over 20 000 data points, and hence in cities there exists an unimaginable amount of data; it is evident that no-one has the capacity to process all the data. We need, therefore, smart self-learning and predictive systems to make the most of the data available. One of the leading principles in smart cities is to enrich data to create meaningful information that supports our decision-making and helps in making our everyday lives run smoothly and that helps us to achieve environmental sustainability. More importantly, this saves time for the most important things in our lives.

 

Miimu Airaksinen was nominated in 2015 as an expert for the United Nations Policy Unit 9 on Urban Services and Technology to prepare the UN urbanization strategy.

 

Twitter: @MiimuAiraksinen

 

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