The databases consist of“ equipment”, process operation module”, and “material-utility” databases, and the tools support for“ process design”, manufacturing cost calculation”, and “report generation”. We also have applied them to construct the evaluation system for the biogas production process which enables us to evaluate the process quantitatively and quickly. We will expand the area of the application to the other low carbon technologies, such as production processes of the fuel cells, storage batteries, photovoltaic cells, and woody biomass.