A step toward the global assessment of district projects:solar indicators and way to quantify them

This paper deals with solar indicators and simulation as a step toward global assessment of a district. The final aim is to assess district projects as much exhaustively as possible, including among other things energy aspects, acoustic aspects, emissions… The present article deals only with solar aspects. First are presented the key indicators regarding solar aspects. Next, solar simulations are run at the scale of the district with the SOLENE software. Important parameters such as the time span and the reflectance of surface are investigated: the simulations demonstrate that reflections must be taken into account even at early stage of design. Concerning the time span, shading effect has a significant influence in dense districts and prevents from using a single day to represent the solar behavior during a month or a season.