The U.S. Department of Energy (DOE) has announced a new SunShot prize for teams who deploy 6,000 small-scale rooftop photovoltaic systems at a non-hardware cost of $1 per watt or less. The first team to achieve this goal will be awarded $7 million; the second and third place teams will be awarded $2 million and $1 million, respectively. Teams have until October 31, 2014, to register for the competition.