Software Packages

The Ipsa Power group has been producing specialist software for many years. The original Ipsa software tool started life as a research project at UMIST - now a part of Manchester University - back in 1975.

As a part of TNEI we have broadened the range of tools we produce, and now provide software solutions for other parts of the Power system industry.


Ipsa is a comprehensive software product for the design, operation and analysis of Electrical Power Systems.

It has been in continuous use since it's inception. Applicable to all levels of network models from transmission, distribution, offshore, ship design and industrial, Ipsa is our main product.

Ipsa Engines

The analysis engines used inside Ipsa are available separately from the Ipsa product and can be used as building blocks for other applications or called directly from spreadsheets.


FAPS is a specialist tool for modeling the effects of Harmonics in multiphase Power Systems using a state of the art full-newton harmonic analysis algorithm. Developed in conjunction with our partners Alstom Transport, and SNCF, it is being extensively applied to transport systems as well as being available for use in modelling complex harmonic interaction on HVDC and large rectifier systems such as Aluminimum Smelters.


EPP is a bespoke software application developed for automated distribution network expansion planning and calculation of use of system charges. Developed from a combination of new analysis modules and existing Ipsa code, EPP provides a complete solution for all the different methodologies.