Power System Blocks

An open source Java library to assemble applications
for electrical power systems' simulation and analysis

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Develop - Extend - Customize

Grid modeling

Powsybl provides a thorough library for grid components modeling, fully editable and extendable.

Grid simulation

Run power flow simulations such as load flows, security analyses with or without remedial actions, sensitivity analyses, etc.

Grid exchange formats

Powsybl supports imports and exports in several standard formats, such as CIM-CGMES, UCTE-DEF...

Advanced features

User stories

Powsybl aims to be used in various power system tools, for TSOs, RSCs or academics.


Powsybl is open source and part of the Linux Foundation Energy. Help us build the next generation power system tool!