Daylightingstrategies can provide large reduc-
tions in lightingand cooling-related energy use,
as wellas improved amenity, satisfaction, and
perhaps occupant performance.But the success-
ful adoptionof daylighting in the marketplacere-
quires anintegratedapproachto the design, speci-
fication, and implementationof envelopeand
lightingtechnologies.Throug hthis research
project, we believe wewere able to take a small
but important first step to change how architects,
facility managers, and industry perceive the no-
tion of daylighting commercial buildings by sup-
plying design tools, credible energy performance
data, demonstrations of future daylightingcon-
cepts, and commissioning protocols that address
key windowandlighting interactions.Clearly, the
simpleconceptualsolutionofmanuallyswitch-
ing off the lights when sufficient daylight is avail-
able froman unmanagedwindowinanaturally
litspace doesn'twork.We have developedsys-
temsthatsaveenergyconsistentlyandreliably
whiledeliveringamenity,satisfaction,comfort,
and health to its occupants through sensitive con-
trol ofdaylightintensity anddistribution.

Despite the technical and organizational obstacles
to the comprehensiveintegration ofbuildingen-
velope,lighting,andHVACsystems,thesedy-
namicfacade andlight-redirecting conceptshold
considerable power to stimulate the architectural
imagination.Itsuggestsa fundamentally differ-
entapproachtooptimizingtheenergyperfor-
manceofbuildingswithnewfenestrationtech-
nologieswhile also improving thequality ofthe
indoor environment, and displaying in a very tan-
gible way the ever changing relationship between
the products ofhuman ingenuity, the local envi-
ronment,andtheimperativeforsustainablede-
sign solutions.