The Riverhouse at Rockefeller Park is a USGBC LEED Gold building located at the combined sites of 16 and 17 in Battery Park City. This project would result in one of the fiercest trade battles in the fledgling New York City PV industry. Designed with the trade considerations known on other projects, the architects wanted the PV to work as louvers at the top of the building. The PV system was designed to be a louver system since zoning rules required that a very light and transparent look be adopted at the top of the building. These louvers evolved into glass/glass laminates and eventually into a tracking PV system on the east, south and west facades of the building’s tower, the first of its kind in the United States. The fact that the BIPV modules were considered louvers meant that the Sheet Metal Workers Union would get the job of installing the panels. Although the install got off to a good start and was proceeding quickly, the IBEW took issue with the installation midway through its construction. The electrical union claimed that since the PV panels were technically electrical fixtures, all installation of these panels should be completed by Electricians, including the hanging and setting of the louvers, a job typically performed by Sheet Metal Workers. The issue went all the way to a national arbitration hearing in Washington DC where the IBEW defeated all other trades to claim this particular installation. Since this was a one off decision however, it remains to be seen what trade union will get work of this type on the next project. The decision at the national arbitration set a further precedent. It was clear before the ruling that Electricians should install UL Listed PV products. However, after the ruling, even the non-UL-listed BIPV products could be legitimately claimed by Electricians leaving it unclear whether Electricians would try to claim BIPV panel installation on all future projects. Two smaller systems of glass/glass laminates echo the top of the tower on the west wing penthouse; these modules were eventually fixed and installed by a composite crew of Electricians and Ornamental Ironworkers.