GI ZRMK is a daughter company of ZRMK Holding and it represents the R&D core of the ZRMK system. Centre for Indoor Environment, Building Physics and Energy is focused on sustainable building and on development of methods for assessemnt building sustainability in support to green public procurement. GI ZRMK supports the national implementation of EPBD directive (calculation methodology, minimum requirements and energy perfromance certification, nerly-zero-energy-building), participates in the national energy plans, residential plan, drafting technical regulation, determination of technical, economically viable and socially acceptable energy saving potential in existing buildings (in support to subsidies). GI ZRMK manages national Energy advisory network, awards quality labels in builings and civ.eng., and runs a pilot energy labelling scheme. At a municipal level GI ZRMK implements energy audits, prepares SEAPs and promotes Covenant of Mayors initiative, green vechicles and EE lighting. The topic of RTD interest are EE technologies and RES implemenation in building sector, monitoring microclimatatic parameters, EE and preventive conservation in building heritage, simulation of thermal response of buildings and components,daylighting, insolation and shading studies.