Purpose: Building energy efficiency retrofit (BEER) not only provides excellent opportunities to reduce overall energy consumption of buildings in a city but also encourages environmental protection, the rational use of resources, and occupants' healthcare, which all contribute towards the sustainability of existing buildings. However, there is a lack of effective performance indicators to measure the sustainability of BEER projects. The aim of this paper is to formulate a list of key performance indicators (KPI) for the sustainability assessment of BEER in hotel buildings. Design/methodology/approach: First, a literature review and in-depth interviews with industry experts and academic researchers were conducted, which filtered the performance indicators for assessing sustainability. Second, a questionnaire survey was conducted to collect data from various groups of experts to analyze the significance of the selected performance indicators. Finally, a model based on fuzzy set theory was designed to identify the key performance indicators (KPIs) for the sustainability of BEER. Findings: Eight KPIs were identified based on fuzzy set theory in this study. They are: quality performance, hotel energy management, cost performance, project profitability, energy consumption and resources saving, health and safety, stakeholder satisfaction, and innovation and improvement. Practical implications: The KPIs of sustainability of BEER identified for hotel buildings in China in this study can be useful reference for other similar research. However, with the different requirements for building types and building ownerships, the KPIs of sustainability of BEER for different buildings may be variable. The findings in this study may not be directly relevant to other types of building. Originality/value: Key performance indicators for the sustainability assessment of BEER in hotel buildings in China are identified and analyzed in this study. The KPIs can help decision-makers to identify an optimal solution between alternatives, which presents the maximum sustainability performance.

Purpose – Future energy consumption in China's building sector will have a considerable influence on both China and the world's energy markets. Although the Chinese government has set out a series of policies to promote building energy efficiency (BEE), the BEE market share remains small. The paper aims to identify the key policy deficiencies that affect such promotion. Design/methodology/approach – Based on the defined roles played by the government, this paper traces the path that China's BEE policies have taken since the 1980s and highlights the key problems. To understand how the Chinese government's BEE policies meet the expectations of market stakeholders, the paper employs data from a questionnaire of building design professionals in the country's major cities to identify the most favourable factors for and existing hurdles to the promotion of the BEE market. Findings – The Chinese government needs to exert greater effort towards overcoming the deficiencies in its roles as policy maker, fiscal hub and advocate. At this stage, China would benefit more from legal and government intervention than from heavy reliance on voluntary schemes for BEE promotion. Practical implications – The paper shows that both the government and industry need to become better informed of the conditions required to attract market parties towards the promotion of BEE. This study also identifies the main concerns involved, thus providing a strong foundation for further study in this arena. Originality/value – This paper highlights the mismatch between market expectations and government policies aimed at BEE promotion in China. It fills the knowledge gap between market stakeholders and government for future policy design concerning BEE promotion.