Behind the Meter Storage Analysis with VTO and SETO

Lead Performer: National Renewable Energy Laboratory - Golden, CO
DOE Total Funding: $750,000
Project Term: August 1, 2019 – July 30, 2022
Funding Type: Direct Funded

Project Objective

Behind the Meter Storage Analysis (BTMS) research is targeted at developing innovative energy storage technology specifically optimized for stationary applications that will enable extreme fast charging of electric vehicles (EV), allow for enhanced grid interactive energy-efficient buildings coupled with photovoltaic resources, while minimizing grid impacts. The key question this project is answering is: What are the optimal system designs and energy flows for thermal and electrochemical BTMS with on-site photovoltaic (PV) generation enabling fast EV charging for three variables: climate, building type, and utility rate structure? As part of this project the program offices are interested in supporting a task focused on systems analysis and optimization around a common set of metrics that capture the value and cost of integrated BTMS systems. 

This project seeks to expand the model to include aspects of load and generation that will impact the total operational utility of BTMS and will inform DOE on metrics that can be used to define and compare cost and operational performance targets across a range of scenarios. While the previous effort created a framework for evaluating a multi-component BTMS system, additional work to fully include and analyze on-site generation, thermal storage, building interactions and possible energy export is needed.

Project Impact

This project seeks to integrate existing models and knowledge about PV generation, building energy use, battery storage, thermal energy storage, and EV charging into a single interface. This combined framework, referred to as EnStore for Energy Storage, will be scalable and flexible, and will answer questions about the tradeoffs between battery and thermal energy storage size, energy storage dispatch, PV size, EV charging demand, building energy demand, and use of grid energy.

Contacts

DOE Technology Manager: Erika Gupta
Lead Performer: Margaret Mann, National Renewable Energy Laboratory

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