A window assembly includes an outer window panel, an inner window panel, a conductive layer disposed at an inner surface of the inner window panel, a spacer element, and a roller shade disposed within an interpane cavity established between the inner and outer window panels by the spacer element. The roller shade has an end fixedly attached at an anchor stop along a perimeter portion of the spacer element. A dielectric layer is disposed between the roller shade and the conductive layer. The roller shade is electrically deployable to coil and uncoil between a coiled light transmitting condition and an at least partially uncoiled light attenuating condition. The roller shade is electrically operable via applying a voltage at the transparent conductive layer and at the anchor stop to uncoil the roller shade from the coiled light transmitting condition to the at least partially uncoiled light attenuating condition.