Increasing consumer interest in roof-integrated solar tiles and the possibility that California's groundbreaking Million Solar Roofs Initiative might pass later this summer are two key reasons why some of the solar industry's biggest players were sure to be at last week's Pacific Coast Builders Conference showing off their wares in the Building Integrated Photovoltaic (BIPV) market.

Rather than mounting separate solar panels on a rack on top of a roof, BIPV shingle designs interlock with roof tiles and shingles to provide an aesthetic, seamless look.