As examples of ZEB-oriented Building of Japan, I introduced examples as the energy consumption results and the initiatives of the environmental consideration, in government buildings of three representative of Japan (Itoman-shi Government building, Kawagoe town Government building, Tochigi Prefectural Government building). As the Feasibility Study results of ZEB in government building, I introduced study of reduction effect by additional measures based on Tochigi Prefectural Government building, in addition, feasibility study of ZEB by solar power generation. In response to the study results, target values of Energy conservation is about 400-600 MJ/(m^2 a) for the time being toward ZEB in government buildings. Target values of the combined Energy generation and Energy conservation is about 100-500 MJ/(m^2 a) for the time being toward ZEB in government buildings. In addition, I describe caveats and future directions, about lighting for ZEB, from the perspective of five (design illuminance, lighting of considering how it is used, lighting design, lighting power consumption, lighting control).
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