Duke Energy a large solar project that allow solar energy to be stored in two large batteries in two within the city Who will be taking the leading roles on this project? Office of Environment and Sustainability, Public Services, Duke Energy Who is the target audience? City Facilities What is the City of Cincinnati’s role in implementation? The City will own this recommendation and work to identify facilities that have the potential to house solar panels and batteries for storage Is it Feasible? Feasibility: Peer cities have implemented similar technologies. Cincinnati has solar panels on City facilities so a system to store excess energy would to be How much would it cost? Cost Benefit Cost-Benefit Ratio NPV 20 Years $5.5 million $2,768,378 1.986:1 Increasing battery storage capacity provides two benefits. First, it strengthens energy security and Cincinnati’s ability to withstand climate related disasters and energy shocks. While energy security provides value, the value is not presently quantifiable. Second, battery storage can be used to take energy from the grid during low demand, low price times, and feed that electricity back into the grid during high demand high price periods. A market analysis provided to the U.S. DOE provided current (unsubsidized) cost of storage via five different types of batteries [1]. The cheapest alternative was ($221/Wh) batteries. 25 W of storage capacity at $221/Wh would cost $5.5 million. Given the importance of these batteries for energy resilience in times of crisis, and the likelihood that most of the lifespan of these products, they will not be required for this purpose; there are other purposes that prospective owners may utilize these batteries for. One such is demand management or peak shaving. Charging the batteries during periods of low demand (low price) and discharging them in periods of high demand (high price) can lower energy bills. This is discussed more specifically in the Resilience Chapter, recommendation #7. Scaling the model discussed there: a 25 W system can yield
Duke Energy a large solar project that allow solar energy to be stored in two large batteries in two within the city Who will be taking the leading roles on this project? Office of Environment and Sustainability, Public Services, Duke Energy Who is the target audience? City Facilities What is the City of Cincinnati’s role in implementation? The City will own this recommendation and work to identify facilities that have the potential to house solar panels and batteries for storage Is it Feasible? Feasibility: Peer cities have implemented similar technologies. Cincinnati has solar panels on City facilities so a system to store excess energy would to be How much would it cost? Cost Benefit NPV 20 Years Cost-Benefit Ratio $5.5 million $2,768,378 1.986:1 Increasing battery storage capacity provides two benefits. First, it strengthens energy security and Cincinnati’s ability to withstand climate related disasters and energy shocks. While energy security provides value, the value is not presently quantifiable. Second, battery storage can be used to take energy from the grid during low demand, low price times, and feed that electricity back into the grid during high demand high price periods. A market analysis provided to the U.S. DOE provided current (unsubsidized) cost of storage via five different types of batteries [1]. The cheapest alternative was ($221/Wh) batteries. 25 W of storage capacity at $221/Wh would cost $5.5 million. Given the importance of these batteries for energy resilience in times of crisis, and the likelihood that most of the lifespan of these products, they will not be required for this purpose; there are other purposes that prospective owners may utilize these batteries for. One such is demand management or peak shaving. Charging the batteries during periods of low demand (low price) and discharging them in periods of high demand (high price) can lower energy bills. This is discussed more specifically in the Resilience Chapter, recommendation #7. Scaling the model discussed there: a 25 W system can yield
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