Better Performance Required
Throughout the US the energy codes are being rewritten. As energy demands increase, The US Dept. of Energy is requiring higher and better performance from buildings. But the interesting thing to note is that the US Dept. of Energy is requiring more daylighting at the same time. This can be a challenge to increase the amount of daylighting while at the same time increasing the energy performance of the building.
It is critical that energy codes are followed. Not following the code or ignoring NFRC can result in loss of LEED points.