Application of the lean-construction concept in energy management

Energy consumption constitutes a significant share of costs in industry, transportation, buildings, and households. Efficient energy use contributes to cost reduction. Increasing energy availability supports economic growth, the creation of new technologies, and job opportunities. Efficient energy utilization helps reduce dependence on limited natural resources. The design and construction of energy-efficient buildings are among the most critical issues in the modern world. The effective application of energy resources through innovative solutions is key to addressing this challenge. In Ukraine, a comprehensive approach to the thermal modernization of old facilities has not been developed. Most buildings are simply insulated externally, neglecting areas such as the basement, attic, entrance doors, windows, heating, and ventilation systems, among others. This article examines the implementation of the Lean-Construction concept through the example of an energy audit and thermal modernization works at a hospital in Chernihiv. Lean-Construction is an effective tool for introducing cost-efficient and energy-efficient solutions in construction and reconstruction. The optimization process during building modernization should focus on identifying «weak points» and subsequently implementing appropriate technologies according to specific needs. The work outlines the main principles of lean construction and their application in energy management. Combined with modern energy management technologies, the proposed approach enables significant cost reductions, increased productivity, and environmental sustainability. For the studied facility, procedures for operation and maintenance have been provided. These involve monitoring the integrity of insulation and finishing materials, cleaning systems, ensuring the integrity and airtightness of window and door structures, maintaining sealing materials, ensuring the functionality of automatic door-closing systems, and controlling lighting devices, heating systems, and ventilation systems. Stages for equipping a dispatching system for the facility have also been developed.