The Copenhagen International School in Denmark is leading by the school with the largest solar energy system in the world with a 12,000-color solar panel located on the outer edge. The panel can generate 300 MW of electricity per year, which is half the energy requirements of the school.

In addition to being an effective solution in the energy field, solar-powered exterior design also makes a difference in terms of building architecture. The color of the sun glass panes on the outside is made of the green color of the mermaid of Andersen, symbol of Copenhagen. The school that attracts also tourists in Copenhagen, was made by the Ecole Polytechnique Federale (EPFL) in Lausanne.

Researchers using light parasites to obtain color on solar panels indicate that this effect can be observed in some butterflies or soap bubbles. It took 12 years for the researchers to complete the panels, stating that it is very difficult to control the light projected by the solar panels to produce a single color without lowering energy efficiency.

In this process, researchers have developed special filters that determine which light is to be reflected as visible color and the rest of the sunlight transformed into energy by being absorbed by solar panel. Without using any pigments, the solar panels were turned into brick red, royal blue, golden yellow or marine green, ensuring that only certain wave lengths are projected.

These old buildings built at a time when energy efficiency is not considered much are solid part of the European heritage and renovation work is an ongoing controversial issue in Europe.

On average, the renewal rate of EU buildings is about 1% per year. Energy efficiency will create positive impacts on the environment and citizens for a better living environment and health. To accelerate this process, the European Union initiated the Climate Change Policy initiative. The objective is to connect universities and companies to develop innovative technologies in the field of energy efficiency and to create building materials that allow buildings to be more sustainable and flexible.

Technology developed in Lausanne by Ecole Polytechnique Federale, the only technology in Europe that brings together building renovation and energy efficiency. The Swiss Institute of Technology in Zurich, Switzerland, has developed an “adaptable solar panel” that can be mounted on glass facades to generate energy in existing buildings. These panels allow the sun to enter the building and can also be used for shading when needed.