PsFlow is a scriptable engine for contingency analysis, transfer limits, and congestion screening. Read the study decks you already have, run thousands of scenarios in parallel, and keep every result reproducible in code.
import psflow as ps case = ps.load_case("planning_case.raw") mon = ps.monitored("hv_elements.mon") con = ps.contingencies("n1_all.con") # full N-1 screen, parallel across cores res = ps.contingency_screen(case, con, mon, workers=64) res.violations().to_csv("results.csv") res.report("constraint_summary.html")
The interconnection queue has outgrown GUI-era tooling. PsFlow serves the teams doing the engineering — not another map portal.
Automate screening and restudy work across clients. Turn a week of manual case runs into an overnight batch with a reviewable script and an automated constraint report.
Scope points of interconnection, screen deliverability, and stress-test queue positions in house — without renting another seat of legacy software for every engineer.
Evaluate load interconnection feasibility under shifting ERCOT and RTO study rules, with contingency and transfer-limit analysis you control end to end.
Three core workflows, exposed as composable Python functions.
Linearized N-1 analysis over full contingency sets: post-contingency flows, violation detection, and worst-offender ranking on interconnection-scale cases.
ps.contingency_screen(...)Source-to-sink transfer capability with binding-constraint identification, for deliverability screening and interface studies.
ps.transfer_limit(...)Transfer limits evaluated across contingency sets to find the credible worst case — the number a screening decision actually turns on.
ps.worst_case_limit(...)Today PsFlow targets DC-linearized screening, scoping, and congestion workflows. AC analysis is on the roadmap — built on solver work we already maintain in the open.
We're taking on a limited number of design partners: pilot pricing, direct access to the engineer building the tool, and a roadmap shaped by your studies. If your team runs screening, deliverability, or congestion work, let's talk.
