Transforming districts into near-zero energy consumption urban areas could be a reality in the next few decades.

The quest towards low energy consumption in city districts requires many changes not only at building level, but also at district level.

Energy consumption in the non-residential sector, such as public and industrial buildings, is typically about 40% higher than in the residential sector.

There is much need to develop energy efficient solutions for residential buildings in Europe. The EU-funded project, MeeFS , due to be completed by the end of 2015, is developing an innovative multifunctional and energy efficient façade system to retrofit residential buildings.

CARTIF III is a new building that forms part of an applied research institute, called the CARTIF Technology Centre, based in Valladolid, Spain. This building is singular.

Three public non-residential buildings will be revamped during the next four years in three countries with different climates; namely in Turkey, Belgium and Spain.

Innovative solutions are required to improve the energy efficiency of the existing residential building stock in Europe. But combining such innovation with better management and new business models creates unique retrofitting opportunities .

Cities substantially contribute to European air pollution as they are the source of about 36% of the total CO 2 emissions. Modern cities therefore raise sustainability concerns.

Imagine a city could halve its energy consumption, costs and greenhouse gas emissions. This would get closer to levels that would ensure sustainability of resources.

Those who live in low-energy buildings are not experts. But energy professionals have been aware of the importance of meeting their needs, right from conception stage.

To prevent energy loss and improve the management of solar power plants scientists of the European research project MACC II in France are now developing a 5-day forecast to predict the movements of desert dust and thus will be able to inform power plant managers beforehand.

Tackling energy loss from buildings is one of the key objectives to reach greater sustainability, when it comes to energy consumption.

Buildings are responsible for 40% of Europe’s total primary energy consumption. Residential buildings represent about 80% of the total building stock.

The heating and cooling of buildings take a large share in the energy consumption in Europe . The average energy consumption in the non-residential sector, such as public and industrial buildings, is estimated to be at least 40% greater than in the residential sector.

Renewable energy sources play an important role in securing future energy supply and mitigating climate change.

Restoring historic buildings and saving energy at the same time is now a reality. Passive house window expert Franz Freundorfer developed the heat-saver for the Waaghaus in Bolzano, a building from the 13th century .

A well-accepted measure for climate protection involves reducing greenhouse gas emissions . And buildings have the greatest energy saving potential, according to the official EU Energy Efficiency Plan 2011 .

Historical buildings and town quarters are an integral part of the European cultural heritage. However, such buildings are often not very energy efficient and thus contribute substantially to the emission of greenhouse gases.

The construction of a building does not only start with its design by architects and engineers.

The overall building stock represents about 40% of the EU’s energy consumption. It also produces about 36% of its total CO2 emissions. Besides, new buildings only account for 1% to 1.