Tools Load unfinished survey You have completed % of this survey % Caution: JavaScript execution is disabled in your browser or for this website. You may not be able to answer all questions in this survey. Please, verify your browser parameters. default Technische Umfrage zur Identifizierung von Lücken und Hindernissen für Methoden zur Umsetzung von Energieeffizienz There are 53 questions in this survey. Next Load unfinished survey