GridPath v2026.2.0

What's Changed

• Feature: Support limiting number of startups by horizon by @anamileva in #1330
• Bugfix: Fix "get_inputs_from_database" for intertia reserves requirements by @Janie115 in #1334
• Enhancement: Allow instantaneous penetration ratios to be negative by @Janie115 in #1335
• Feature: Built-in period/month horizons by @anamileva in #1337
• Bugfix: Fixes to load component shift by @Janie115 in #1336
• Major Feature: Support for stochastic formulations by @anamileva in #1338

Full Changelog: v2026.1.0...v2026.2.0

GridPath v2026.1.0

What's Changed

• Enhancement: Upward reserves to SOC depletion and other stor optype enhancements by @anamileva in #1325
• Enhancement: Enhanced treatment of reserves from hybrids by @anamileva in #1326
• Other small fixes and enhancements

Full Changelog: v2025.10.3...v2026.1.0

v2025.10.3

What's Changed

• Enhancement: Tweaks to docs by @anamileva in #1321

Full Changelog: v2025.10.2...v2025.10.3

GridPath v2025.10.2

What's Changed

• Bugfix: Tweak to update-from-default-subscenario function by anamileva
• Bugfix: Set negative commitment to zero in pass-through inputs by anamileva
• Bugfix: Don't close DB after writing validation by anamileva
• Enhancement: Print stage on solve/import by anamileva

Full Changelog: v2025.10.1...v2025.10.2

GridPath v2025.10.1

What's Changed

• Enhancement: Add option to skip the summary results text file by @anamileva in #1317

Full Changelog: v2025.10.0...v2025.10.1

v2025.10.0

What's Changed

• Feature: Built-in horizons by @anamileva in #1309
• Enhancement: Add period index to ramp rate monthly adjustment by @anamileva in #1310
• Feature: DB-side handling of built-in horizons by @anamileva in #1311

Full Changelog: v2025.9.1...v2025.10.0

GridPath v2025.9.1

What's Changed

• Fix paths in docs by @anamileva in #1306

Full Changelog: v2025.9.0...v2025.9.1

GridPath v2025.9.0

What's Changed

• Enhancement: Reorganize example CSV structure by @anamileva in #1298
• Enhancement: Subscenario defaults by @anamileva in #1299
• Enhancement: Separate load zone 'portfolio' from load balance params by @anamileva in #1300
• Enhancement: Default transmission availability type to 'exogenous' by @anamileva in #1301
• Enhancement: Storage min and max duration defaults by @anamileva in #1302
• Enhancement: Enhancements to viz suite by @anamileva in #1303
• Enhancement: Remove defunct tuning feature; move ramp tuning to project opchar by @anamileva in #1304

Full Changelog: v2025.8.0...v2025.9.0

GridPath v2025.8.0

What's Changed

This is a maintenance release. Dependency versions bumped to latest. Drop support for Python 3.9 and 3.10; add support for Python 3.12 and 3.13.

• Maintenance: Maintenance dependency upgrades by @anamileva in #1289
• Enhancement: Make inertia requirement more flexible. by @alexrob18 in #1288
• Maintenance: Remove UI code from repository by @anamileva in #1290
• Maintenance: Minor fixes by @anamileva in #1291
• Maintenance: Test on Linux, Windows, and Mac by @anamileva in #1292
• Maintenance: Test with coverage on one parallel run only by @anamileva in #1296

Full Changelog: v2025.7.0...v2025.8.0

GridPath v2025.7.0

What's Changed

• Enhancement: Define elcc_simple_fraction over Reals by @Janie115 in #1273
• Feature: New optional feature for Inertia reserve by @alexrob18 in #1275
• Bugfix: Fix credit purchase limit by @alexrob18 in #1276
• Bugfix: Fix inertia requirement by @alexrob18 in #1278
• Enhancement: Make spec project fixed costs an optional input by @anamileva in #1283
• Enhancement: Default project availability type to 'exogenous' by @anamileva in #1285

Full Changelog: v2025.6.1...v2025.7.0