The 2015 Architecture at Zero Competition has launched, challenging students and designers to develop 'family-style residential units' for the Mission Bay Campus of the University of California San Francisco. Now in its fifth year, the competition calls for designs that produce "at least as much energy as [they] use over a year," excluding the embodied energy of building materials and transportation of people and materials to and from the site. Entrants must be able to demonstrate that their designs can be reasonably expected to meet a zero net energy goal over a prolonged period of time. The competition is open to student and professional individuals and teams, with up to $25,000 in prize money to be won. Interested parties have until August 28 to register and submissions are due September 25 at 1PM PST. Read more about the competition at Architecture at Zero's website and check out the winners from last year here.