2026.06.18

What's Changed

• Reorganize root of repo by @patrickbrown4 in #36
• build(deps): bump actions/download-artifact from 7.0.0 to 8.0.1 by @dependabot[bot] in #96
• End ReEDS run early if no valid scenarios by @kennedy-mindermann in #93
• Add link to Sinnott's scheduled outage description page. by @wesleyjcole in #97
• Ignore kmeans memory leak warning on Windows by @wesleyjcole in #100
• Update natural gas regression parameters (betas and alphas) with AEO 2025 (old -> 2025) by @Yunzhi-Chen in #50
• Add Latin Hypercube Sampling for Monte Carlo Analysis by @bsergi in #57
• Create an inputs.h5 -> inputs.gdx pipeline to help move processing out of b_inputs.gms by @patrickbrown4 in #61
• build(deps): bump actions/labeler from 6.0.1 to 6.1.0 in the actions-non-breaking group by @dependabot[bot] in #106
• Disaggregate and re-aggregate inputs with regional scope of legacy (134) zones by @kodiobika in #102
• Update Coal and Uranium Prices to AEO2026 by @wesleyjcole in #104
• Update natural gas regression parameters (betas and alphas) with AEO 2026 (2025 -> 2026) by @Yunzhi-Chen in #51
• build(deps): bump peaceiris/actions-gh-pages from 4.0.0 to 4.1.0 in the actions-non-breaking group by @dependabot[bot] in #112
• Add faster method for assigning actual to representative periods by @patrickbrown4 in #105
• Update interzonal transmission costs/distances and use directly calculated values by @patrickbrown4 in #95
• Derate thermal capacity reserve margin contribution with FOR by @clairehalloran in #85
• Bugfix: Fix handling of longitudes for existing plants in hourlize by @patrickbrown4 in #120
• Add AEO2026 Demand Projections by @wesleyjcole in #114
• Bring cendivweights calculation into input processing by @patrickbrown4 in #121
• Update docs with information to get an evaluation license from GAMS by @kennedy-mindermann in #117
• remove extra scripts from documentation_tools by @kennedy-mindermann in #108

Known Issues

The following scenarios from cases_test.csv are failing:

• PJM_County_CC
• WECC_County: noted in #125

Compare Reports

results-2026_05_12_USA_defaults,2026_06_18_USA_defaults.pptx

New Contributors

• @Yunzhi-Chen made their first contribution in #50
• @bsergi made their first contribution in #57
• @kodiobika made their first contribution in #102
• @clairehalloran made their first contribution in #85

Full Changelog: 2026.05.12...2026.06.18