Skip to main content

REopt Lite

The REopt™ Lite web tool helps commercial building managers optimize solar photovoltaic (PV), wind, and battery storage systems for financial savings or energy resilience.

The tool lets users:

  • Evaluate the economic viability of grid-connected PV, wind, and battery storage at a site
  • Identify system sizes and battery dispatch strategies to minimize energy costs
  • Estimate how long a system can sustain critical load during a grid outage.

REopt Lite offers a no-cost subset of features from NREL's more comprehensive REopt model. REopt Lite also offers an application programming interface (API). Send questions and tool feedback to

Site Maintenance

The REopt Lite web tool is currently down for maintenance. Please try again later.


Subscribe to receive our email updates, and we'll notify you when the REopt Lite tool is available for you to use.