The REopt™ Lite web tool offers a no-cost subset of features from the more comprehensive REopt model developed and used by analysts at the National Renewable Energy Laboratory (NREL).

It allows commercial building managers to 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, and optimize for energy resilience.