Comprehensive case study by the American Institute of Architects of the Ballard Library in Seattle. The design team worked with the Seattle City Light's Green Power Program to install rooftop solar panels, and, in the curtainwall, glazing with photovoltaic film. The photovoltaic glazing is one of the first such installations in the nation. The power generated by both systems is fed back into the power grid, and Seattle City Light continues to monitor the performance. The photovoltaic glazing also shades the lobby of the Neighborhood Service Center, eliminating the need for other shading devices, and minimizing the need for mechanical cooling. Meters at the base of these windows allow patrons to study the path of the sun and its effects on individual panes of glass in the curved wall of photovoltaics; In this way, the building features a high-tech sundial.