In January, SunRun published a report explaining how local governments inadvertently drive up the cost of installing solar projects on a home. Between local solar permitting and inspection processes, a home installation was costing, on average, an additional US$2,500. Six months after its initial report, SunRun has revealed a new study published by Aecom, which confirms how a simpler solar permitting process can potentially generate more than US$5 billion in new growth for the state of California.