BCP Switzerland are a Zurich-based company and the developers of NEPLAN, a modular power systems analysis package.

NEPLAN has the following modules: load flow, short circuit, contingency analysis, motor starting analysis, OPF, line parameter calculations, network reduction, harmonic analysis, investment analysis, dynamic simulation, reliability analysis, overcurrent and distance protection, earthing analysis, load forecasting, network optimization tools, arc flash analysis and cable sizing. NEPLAN also features a C/C++ based programming language and MATLAB interface.

Reference: NEPLAN