SEPA TV WAPA’s Mark Gabriel: Building a Carbon-Free Future in the West with Hydropower Watch Now WAPA Administrator and CEO Mark Gabriel believes getting to 100% carbon-free energy will require many changes in the way we think about our energy supply. Hear Mark’s insights on hydropower, and how WAPA is maximizing this resource through collaboration and new strategies like pairing storage with dams. This video is part of a SEPA TV series on technologies powering the transition to carbon-free energy, hosted by SEPA President & CEO Julia Hamm. Watch this series and more from SEPA TV here.