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OpenDSS

Open Distribution System Simulator (OpenDSS)

BSD-3-Clauseelectrical/power
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An electric-power distribution-system simulator for power-flow, harmonics, dynamics, and distributed-energy-resource studies.

About the Project

Why use this?

OpenDSS is an EPRI-developed distribution-system simulator used to analyze medium- and low-voltage electrical networks. It supports power-flow solutions, harmonic analysis, dynamics, and time-series simulations, with strong support for distributed generation, storage, electric vehicles, and other DER technologies.

Engineers choose OpenDSS when they need a scriptable, open distribution-analysis engine rather than a proprietary GUI-only tool. It is commonly used through its COM/direct APIs and Python interfaces, making it well suited to utility studies, DER hosting-capacity analysis, and automated grid simulations.

Key Features

  • Distribution power-flow and harmonics analysis
  • Time-series and dynamic simulation
  • Modeling for DER, storage, EVs, and distribution automation
  • Scriptable interfaces and automation-friendly APIs
  • Widely used for utility planning and DER hosting-capacity studies
Replaces / Alternative to
CYME, Synergi Electric
Free layer
open-source