Yes it is! Not only does it provide a substantial reduction in your energy costs, daylight has several pleasant effects. Scientists all over the world agree: people function better in natural light than in artificial light. That’s why more and more governments are laying down standards to ensure sufficient incoming daylight in workplaces. Students pay better attention and achieve higher scores, it is healthier for the body (hospitals report a quicker recovery process when patients are exposed to natural daylight), and several academic studies have shown that it results in economic returns: productivity increases, employees are ill less often and studies show that daylight encourages customers to buy more goods. A complete colour spectrum, relaxing for the eyes, close to human nature: the link between daylight and health is essential.