› Energy Storage in State RPSs: State-Federal RPS Collaborative Webinar [PDF Slides, 5.25 MB] - December 19, 2011. Hosted by Clean Energy States Alliance. This webinar explores the role of energy storage in state RPS, including the integration of an increasing penetration of renewables and the interpretation of energy storage as a generation resource. The topics include a review of state RPS that include energy storage while exploring the benefits of energy storage to an RPS portfolio and the challenges of integrating storage into RPS programs. The webinar was recorded and is to be made available at the Clean Energy States Alliance web site.