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 This benchmark library is curated and maintained by the [IEEE PES Task Force on Benchmarks for Validation of Emerging Power System Algorithms](https://power-grid-lib.github.io/) and is designed to evaluate a well established version of the the AC Optimal Power Flow problem.  This [introductory video](https://youtu.be/fC3hzddCJ2c) and [detailed report](https://arxiv.org/abs/1908.02788) present the motivations and goals of this benchmark library.  In particular, these cases are designed for benchmarking algorithms that solve the following Non-Convex Nonlinear Program,
 
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 A detailed description of this mathematical model is available [here](https://arxiv.org/abs/1502.07847).  All of the cases files are curated in the [MATPOWER](https://matpower.org) data format.  Open-source reference implementations are available in [MATPOWER](https://matpower.org) and [PowerModels.jl](https://github.com/lanl-ansi/PowerModels.jl) and baseline results are reported in [BASELINE.md](BASELINE.md).