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REopt Lite Software Update History

NREL updates the REopt™ Lite web tool on a regular basis. Review REopt Lite's software update history below.

November 2018: Wind Module, Custom Rate Tariffs, Critical Load Builder, and a User Dashboard

Released on November 2, 2018, REopt Lite's new wind optimization module, custom utility rate tariffs, critical building load profile builder, and user dashboard allow users to evaluate the economic viability of distributed wind alongside solar photovoltaics (PV) and battery storage, and further customize cost savings and resilience analyses. The new user dashboard allows users to log in, save their optimization results, and view their previous runs.

June 2018: Enhanced Resilience Features

Released on June 8, 2018, REopt Lite's enhanced resilience analysis capabilities allow building owners and energy managers to size PV and storage systems to meet a specified outage duration, and compare systems sized for optimum savings to systems sized for resilience. Users can also explore the impact of microgrid upgrade costs and avoided outage costs on project economics.

March 2018: Application Programming Interface

Released on March 23, 2018, the REopt Lite application programming interface (API) allows users and software developers to programmatically interface with the REopt Lite web tool. The API can be used to evaluate multiple sites and perform sensitivity analyses in an efficient manner, and integrate REopt Lite capabilities into other tools. Access the API.

In addition to the API release, REopt Lite developers added a downloadable dispatch strategy and additional utility rates to the web tool.

September 2017: REopt Lite's Initial Release

Released on September 29, 2017, the REopt Lite web tool helps building owners evaluate the economics of grid-connected PV and battery storage at commercial sites. It identifies the optimal PV system size and battery dispatch strategy to minimize the life cycle cost of energy at a specific site, and estimates the amount of time a PV and battery system can sustain the site's critical load during a grid outage. 

For the first time, REopt Lite provides public access to a subset of NREL’s more comprehensive REopt model, and allows users to run their own site-specific, optimized, and integrated renewable energy decision analysis in order to accelerate renewable energy and storage project development and deployment. 

Future Development Plans

Learn more about future software development plans for the REopt Lite web tool.