50 years of PSSE

Powering the future of grid planning

For half a century, PSS®E has delivered the precision, stability, and trust essential for mission‑critical transmission planning and analysis.

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50 years proven reliability in power system simulation

For 50 years, PSS®E has set the standard for power system simulation - delivering the precision and stability mission‑critical transmission planning demands. Built alongside the engineers who rely on it, PSS®E has shaped every major era of grid modeling, evolving from early transmission studies to today’s data‑driven, automation‑powered workflows.

With standardized models, benchmark‑quality performance, and unmatched analytical depth, PSS®E is trusted by a global community of grid planners. As grids grow more complex and the industry moves toward autonomous, intelligent networks, PSS®E bridges past and future - trusted for decades and built to power what comes next in grid planning.

Celebrating the founders of PSS®E

Long before PSS®E became the industry standard, it began as something simpler — and far more powerful: a tool created by engineers who needed answers. Not a product roadmap. Not a business strategy. Just brilliant minds tackling urgent power system challenges with rigor, ingenuity, and a deep commitment to the grid. Today, we honour the original pioneers whose vision shaped PSS®E and the modern era of grid simulation: Lionel Barthold, Dag Reppen, Paul De Mello, Robert Ringlee, Dale Hedman, and Wayne B'Rells.

PSS®E isn’t just software — it’s the engine that has built, and continues to build, the world’s power systems. For decades, every power systems engineer has relied on it to plan, operate, and shape the grids that power global prosperity.

Arshad Mansoor, President & CEO, EPRI

The PSS®E Community Recognition Awards

As part of the PSS®E 50‑year celebration, we have created the PSS®E Community Recognition Awards to recognize the people who continue to shape and advance grid planning through their work, collaboration and impact. The awards are peer‑nominated and community‑driven, recognizing excellence, innovation and meaningful contribution, past, present and future, across the global PSS®E community.

Nominations are now closed; winners will be announced soon. This page will be updated to share their stories.

Powering the next generation of grid planners

For 50 years, PSS®E has been a cornerstone of power systems education, giving students hands‑on experience with the same tools used by grid planners worldwide. By learning on an industry standard, graduates enter the workforce confident, capable, and ready to contribute from day one—strengthening the global talent pipeline that will drive the energy transition for decades to come.

Large group of happy students listening to their teacher on a class at lecture hall

Why PSS®E Power Simulator?

PSS®E is an industry-leading transmission planning and analysis software designed to help you optimize power supply, mitigate risk and make confident investment decisions. Accelerate your digital transformation with PSS®E, part of Gridscale X.

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