The Probabilistic Resource Adequacy Suite (PRAS) provides an open-source, research-oriented collection of tools for analysing the resource adequacy of a bulk power system. The simulation methods offered support everything from classical convolution-based analytical techniques through to high-performance sequential Monte Carlo methods supporting multi-region composite reliability assessment, including simulation of energy-limited resources such as storage.

PRAS is developed and maintained at the US National Renewable Energy Laboratory (NREL).

For help installing PRAS, see the Installation page. To get started using PRAS, see the Getting Started page.