EPRI: Electric Power Research Institute

Distributed Energy Resources Value Estimation Tool (DER-VET™)


DER-VET™ is a modeling tool that provides a platform for the calculation and understanding of the value of energy storage, other distributed energy resources (DER), and microgrids based on their technical merits and constraints. DER-VET is a further development of EPRI's StorageVET® that has incorporated other DER technologies into the analysis tool including solar, wind, demand response, electric vehicle (EV) charging, internal combustion engines, and combined heat and power in different configurations including microgrids. DER-VET uses load and other data to determine the optimal size, duration, and technical characteristics for energy storage, other DER, and microgrid configurations to maximize benefits based on site characteristics and the value that can be extracted from the use cases.

DER-VET users include customers, developers, utilities, and regulators to make informed decisions using project-level valuation through the free, publically accessible, open source platform made possible through funding support from the California Energy Commission.

Note: for more information about StorageVET®, please scroll down to the bottom of this page.

DER-VET™ Resources

  • DER-VET™ User Guide
  • DER-VET™ User Feedback Form
  • Download DER-VET™

  • DER-VET™ Full Release: Coming Soon in March 2021
  • DER-VET™ Standalone Environment
    • (use the form below)

  • License
  • Requirements for running DER-VET™ Community Edition GUI:

    • Microsoft Windows Operating System (7 or later)
    • Internet Information Services (IIS) (7 or later)
    • Microsoft SQL Server (2012 or later)
    • At least 4Gb of RAM

    Reference Cases

  • Bill Reduction Reference Case
  • Reliability Reference Case
  • Project Goals

    • Provide a consistent platform for communication of site-specific DER value between stakeholders of utilities, regulators, and vendors
    • Provide a publicly available tool and method to fairly, transparently, and consistently estimate the benefits and costs of DER or microgrid project economics and operations across all cases
      • Grid Services
      • Technologies and Sizes
      • Locations

    Support for a Wide Range of Decision Makers

    • State Commissions & Regulators
      • Reliability
      • Critcal infrastructure resiliency improvement
      • Public Safety Power Shutoff (PSPS) mitigation
      • Supports microgrids—including disadvantaged communities

    • Utility System Planners
      • Grid reliability
      • Non-wires alternatives
      • Utility microgrid-as-a-service for premium customers or during PSPS events

    • Individual Customers, Community of Customers, and 3rd-Party Implementers
      • Reliability
      • Resiliency
      • Demand charge reduction
      • Retail energy arbitrage
      • Demand response

    Feature Highlights

    • Broad coverage of energy storage technologies and other reference technologies (e.g. combustion turbine)
    • Flexible optimization horizon
    • Flexible simulation time step granularity
    • Utilizes the Gurobi optimization engine
    • Web-based user interface and free public access

    Get Involved

    • Stakeholders can participate in input and review of model definitions through participation in the Energy Storage Integration Council (ESIC), an open technical forum. More info can be found at www.epri.com/esic.
    • For additional information about DER-VET™ stakeholder group discussions, email esic@epri.com to join ESIC.
    • ESIC Working Group 1 DER-VET™ Task Force Meeting Recordings can be found at www.der-vet.com/esictf
    • The ESIC collaboration site contains live draft user documentation from the ESIC DER-VET™ Subgroup at collab.epri.com/esic.
    • Relevant documents can be accesssed via: ESIC Collaboration Site > WG1 - Grid Services and Analysis > WG1 Documents.
    • All documents and review opportunities will be facilitated through the Analysis Working Group of ESIC.


    • StorageVET® is a publicly available, open-source, Python-based energy storage project valuation tool developed by EPRI.
    • Download StorageVET® 2.1 and get more information at www.storagevet.com