A combination of opaque and semitransparent thin-film amorphous silicon modules dress the southwest corner of the modern office building. From the outside the solar electric modules blend seamlessly with the standard window glass. From the inside, one can see the laser-scribed dots which allow the amorphous modules to transmit up to 30% of the incident light. Stepping back from the windows, the modules look like tinted glass. The opaque modules, which cover non-visual portions of the facade are not visible from the inside.

The installation required the cooperation of architects, PV designers, electricians, glaziers, and equipment suppliers. Ninety custom modules were assembled into a curtain wall, which conceals all the module wiring in mullions. The modules are divided into two sub-arrays one facing south, the other facing west. Each sub-array is connected to its own grid-tied inverter. The maximum power point voltage of the arrays is slightly lower than that for which the inverter was originally designed. To support the effort. Trace Engineering supplied revised software for the inverter's maximum power point tracing (MPPT) micro-controllers. The new software decrease the MPPT voltage window, and the the array now quietly generates enough electricity to offset most the AC lighting requirements of the building.