Doctoral Thesis “Climate adaptive building envelopes” author is Riga Technical University Faculty of Electrical and Environmental Engineering Institute of Energy Systems and Environment student Toms Mols. In the work measurements, tests, multi-criteria analysis and development of building energy performance model were carried out. The aim of the Thesis is to develop the methodology for evaluation of climate adaptive building solution application in reaching zero energy buildings. Doctoral Thesis consists of an introduction, three chapters and conclusions. First chapter discovers current state of research of indoor microclimate affect on human productivity, energy efficiency measures in buildings and climate adaptive building envelopes. Second chapter describes the methodology of performing assessments of indoor microclimate, multi-criteria analysis of climate adaptive building envelopes and inverse modeling. The third chapter comprises results of the study describing discovered measurements, calculated performance outcomes, multi-criteria analysis and the developed system dynamics model output. In the Thesis the following hypothesis was proposed: Climate-adaptive building solutions contribute to achieve a zero-energy building level while maintaining good indoor microclimate. Conclusions after measurements, tests and calculations confirm the proposed hypothesis. Doctoral Thesis consist of 86 pages, 41 figures, 3 equations and 10 tables. 116 literature sources are used and 7 appendixes are added.