The U.S. energy storage monitor is a quarterly publication of Wood Mackenzie Power & Renewables and the American Clean Power Association. Each quarter, we gather data on U.S. energy storage deployments, prices, policies, regulations and business models. We compile this information into this report, which is intended to provide the most comprehensive, timely analysis of energy storage in the U.S. The U.S. Energy Storage Monitor is offered quarterly in two versions– the executive summary and the full report. The executive summary is free, and provides a bird's eye view of the U.S. energy storage market and the trends shaping it. In contrast, the full report features state-by-state breakdowns and analysis on storage deployments, growth forecasts, policies helping or hindering growth, financing trends, and market strategies. It is available individually each quarter or as part of an annual subscription.