ENInefficiently managed resources in enterprises not only distort the financial results of the enterprise, statistical information of the state, but negatively affect the environment and contradict the concept of sustainable development. Research purpose was to investigate how are assessed the unused production capacity which affects the overall statistical indicators of the state in large Lithuanian textile enterprises. The determination of the capacity utilisation level in enterprises is quite superficial, which is influenced by the fact that there are no recommendations on how exactly the unused production capacity of enterprises can be identified. The performed research revealed that large textile Lithuanian companies do not have the methodology to assess the level of unused production capacity. Only 60 percent of surveyed enterprises use KPIs. The authors suggested to improve the form of the questionnaire of the Statistics Department in order to obtain more valuable information for the State. Keywords: capacity, company, sustainability, textile industry, Lithuania. [From the publication]