 Hi, I'm Catherine Hamilton. I'm the policy director for the Energy Storage Association. We're a trade association that represents energy storage companies, utilities, anybody who wants to store clean, reliable, affordable energy and then use it when it's most effective, most efficient, and where cost effective. Energy storage is critical to making this country more sustainable because right now the way our system operates is as energy is produced, as electricity is generated, it has to be used immediately. If you can store it and then use it when you need it, it becomes much more efficient and cost effective. It allows wind and solar to be used at their maximum potential, as well as any other resource on the grid.