Cost-effective Hybrid Energy Storage System for Solar Generation and EV Charging
Wednesday, October 21, 2020
2:00 PM – 2:20 PM EDT
Li-ion energy storage systems are traditionally designed with homogeneous batteries, selected to withstand the highest power requirements of targeted use cases (e.g., demand charge reduction, frequency regulation, and EV charging). Designing homogeneous battery storage for worst case scenarios is sub-optimal in cost and leads to under-utilization of the storage assets. We propose a novel cost-effective solution - a hybrid energy storage system that consists of Li-ion batteries with different power and energy capabilities, cycle lives, and costs. During this session, attendees will learn the system design, sizing, and techno-economic analysis, as well as lab demonstration of a system containing (i) 2C batteries (high power, high energy, expensive), (ii) C/2 batteries (low power, high energy, medium price), and (iii) 2nd life systems (low power, low energy, least expensive) co-located with solar PV for demand charge reduction and EV charging.