Prizes are receiving increasing attention in policy and entrepreneurial communities as means to promote innovation, but their distinguishing features remain inadequately understood. Models of patents treat winning a patent as winning a prize; other models distinguish prizes primarily as public...

Promoting energy efficiency (EE) has become a leading policy response to greenhouse gas emissions, energy dependence, and the cost of new generators and transmission lines. Such policies present numerous puzzles. Electricity prices below marginal production costs could warrant EE policies if EE...