This is a very interesting session from last years Greenbuild on how four leading architectural firms tackle the issues around understanding daylight metrics and informing design decisions accordingly.

How do firms start a daylight simulation program in-house, how do they run it, integrate with project schedules, and use it to make better design decisions? Leading practitioners within four architecture firms will answer each of these in a rapid fire session that shows how great spaces get designed, informed by daylight simulation. In addition, LMN Architects, Mahlum, Callison, and Skidmore, Ownings and Merrill will each present case studies showing how daylight simulation was an integral part of the design discussion and decisions. Successful daylight simulation requires a balance between the quantity and quality of daylight. While LEED has criteria for ‘success,’ firms that use daylight simulation begin to understand how changing conditions throughout each hour, day, and year will interact with geometry and glazing properties to create too little, too much, the wrong kind of light conditions, or conditions that the design team intended. This information can be fed back into an energy model for more accurate energy use simulations, as many energy models do not adequately predict energy savings associated with daylight.