Supporting Data and Detailed Formulation for Co-Planning of Integrated AC Electricity and Gas Systems under N-1 Reliability Using a Progressive Contingency Screening Framework

This Zenodo record provides the supporting data and detailed mathematical formulation for the manuscript entitled “Co-Planning of Integrated AC Electricity and Gas Systems under N-1 Reliability Using a Progressive Contingency Screening Framework,” submitted to IEEE Access under Manuscript ID Access-2026-28808. The record contains: (1) a PDF document presenting the detailed mathematical formulation of the proposed co-planning framework; (2) an Excel workbook containing the input data, assumptions, and numerical case-study information; and (3) a README file describing the deposited materials. The Excel workbook includes data and case-study information for the Garver electricity network connected to a 7-node natural-gas network and for the IEEE 118-bus electricity network connected to the natural-gas test network used in the large-scale study. The deposited materials include electricity- and gas-network parameters, existing and candidate infrastructure data, generation and demand information, coupling parameters, contingency-related information, and reported numerical case-study results. These materials are provided to improve the accessibility, transparency, and reproducibility of the numerical study. No executable optimization code is included in this record. Independent reproduction of the optimization calculations requires implementation of the formulation provided in the PDF using the data supplied in the Excel workbook.