In the last several years, the practice of socially responsible architecture has received mainstream attention. Architects and designers are using their talent and skill to create affordable and sustainable designs for communities in need. The work of the late Samuel Mockbee and his Rural Studio led the way. Bryan Bell's Design Corps carries on this tradition, while Cameron Sinclair's Architecture for Humanity brings the design world and the relief world together on a global scale. But where do lighting and energy issues fit into a movement that has focused primarily on the physical building? The work of the Light Up the World Foundation (www.lutw.org), founded by Dave Irvine-Halliday, is addressing this question.