REopt Lite User Guides
Learn more about the REopt Lite™ web tool from the following user guides, including a detailed user manual, user forum, tutorials, and recorded webinars.
The REopt Lite Web Tool User Manual provides an in-depth review of the tool, intended users and use cases, and instructions on how to get started. The user manual also contains details about the tool's data inputs, results, default values, and links to additional technical references.
The REopt Lite User Forum contains frequently asked questions about using the REopt Lite web tool. You can browse and search discussions by topic and sign in to join discussions, ask new or follow-up questions, and leave comments and feedback.
Tutorials and Webinars
Quick-start video and fact sheet tutorials guide users through REopt Lite web tool inputs and results, and the REopt Lite application programming interface (API) and Open Source software. View the full REopt Lite Tutorial video playlist.
Utility Rate Analysis
Use REopt Lite to perform a utility rate analysis that compares the life cycle electricity costs of available utility rates at a given site.
Download the Utility Rate Analysis fact sheet.
Embed REopt Lite into your own applications for dynamic analysis using the Application Programming Interface, or API.
Watch the API Overview video.
Open Source Software
Learn how to access REopt Lite Open Source and explore the source code, build custom capabilities, and contribute new models.
Recorded webinars explore REopt Lite features and functionality.
Designing Hybrid Combined Heat and Power Systems: An Introduction to New Features
in NREL’s REopt Lite Tool
Clean Energy Group Resilient Power Project webinar, Mar. 2, 2021
Energy Master Planning for Resilient Public Communities
National Academies of Sciences Federal Facilities Council workshop, Oct. 13–16, 2020
Introduction to REopt Lite Open Source
NREL webinar, Mar. 17, 2020
Save Money and Build Resilience with Distributed Energy Technologies
DOE Better Buildings webinar, Feb. 4, 2020
Designing Solar+Storage to Power Critical Loads: An Introduction to New Resilient
Power Features in NREL's REopt Lite Tool
Clean Energy Group Resilient Power Project webinar, Feb. 21, 2019
Simplifying Resilient Power Design with REopt Lite: A Look at New Features Added to
NREL's Solar+Storage Tool
Clean Energy Group Resilient Power Project webinar, July 25, 2018
REopt Lite: Sizing Solar+Storage for Savings and Resiliency with NREL's New Tool
Clean Energy Group Resilient Power Project webinar, Nov. 1, 2017