Abstract
Energy improvement measures can destroy the historical and architectural values of existing buildings. From a broader environmental perspective, extensive energy efficiency measures may even lead to increased greenhouse gas emissions from demolition, waste production and transportation of new materials. The complexity of the consequences of energy-saving measures on existing buildings calls for more holistic methods in discussing solutions. This paper presents an integrated analysis method developed by three masters' students at the Norwegian University of Science and Technology. The method examined different short- and long-term impacts from various energy efficiency measures on a model building by combining life cycle assessment, energy calculations and a self-developed heritage value assessment system. By combining the results from the different analyses in an integrated decision-making tool, it was possible to discuss optimal solutions for energy improvement, taking both environmental and heritage aspects into consideration.
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