Changelog

Version: 0.2.3
Date: 2026.08.23
  Bugfixes:
    - Raised the maximum temperature of steam so the rubber-lined, reinforced, and foundation heat exchangers can feed steam turbines. Their output previously exceeded the steam fluid's temperature ceiling, so pipes carrying it reported "Cannot connect pipelines with different fluids" and no turbine would accept it.
    - Fixed upgraded steam turbines reaching full rated output on 500 degree steam. The same temperature ceiling clamped every turbine tier's power calculation, leaving the rubber-lined, reinforced, and foundation maximum temperatures with no effect.
    - Restored documented power output for the rubber-lined, reinforced, and foundation steam turbines: 9.1 MW, 13.2 MW, and 18.9 MW at their rated steam temperature. All three were capped at 7.0 MW, 8.1 MW, and 9.3 MW regardless of tier, well under the output their designs called for.

Version: 0.2.2
Date: 2026.08.03
  Changes:
    - Corrected changelog.txt formatting to match the standard Factorio changelog schema (missing category colons, non-recognized "Bugfix" category, and a freeform entry).

Version: 0.2.1
Date: 2026.07.09
  Bugfixes:
    - Fixed automated Factorio validation in headless CI by removing a desktop-only launch flag.

Version: 0.2.0
Date: 2026.07.09
  Bugfixes:
    - Updated metadata and prototype definitions for Factorio 2.1 compatibility.
    - Migrated fluid-using recipes from the removed `category` field to the Factorio 2.1 `categories` field.
    - Updated steam engine and steam turbine entity tinting for the Factorio 2.1 generator `pictures` layout.
    - Removed standalone item tooltips that advertised Advanced Fluid Infrastructure pipeline extent when Advanced Fluid Infrastructure is not installed.
    - Added the Space Age dependency required by the Space Age science pack progression.
    - Fixed upgraded steam engine and steam turbine health values.
    - Hardened primary steam turbine recipe migration handling.
  Changes:
    - Added the first Advanced Power Infrastructure public release candidate for Factorio 2.1 and Space Age.
    - Added release packaging, CI validation, deployment automation, and public release documentation.
    - Updated the repository README and packaged README for public presentation.
    - Clarified GPLv3 licensing, AI-assisted development disclosure, and upstream provenance.
    - Made Advanced Fluid Infrastructure and Advanced Energy Grid optional dependencies.
    - Added standalone recipe and technology fallback paths when Advanced Fluid Infrastructure is not installed.
    - Limited power-generation pipeline extent parity to games where Advanced Fluid Infrastructure is installed.
    - Split electric grid infrastructure into the optional Advanced Energy Grid companion mod.
    - Split fluid pipe and pump infrastructure into the optional Advanced Fluid Infrastructure companion mod.
    - Added pipeline extent descriptions to relevant power entity and item tooltips when supported.
    - Consolidated steam engines and steam turbines back to one item per tier.
    - Renamed the base steam engine to Iron Steam Engine and MK2 to Steel Steam Engine.
    - Applied tier-specific icon and entity tinting to upgraded power machines.
    - Migrated custom prototype IDs to the repo-local `aer_` namespace.
    - Reorganized prototype definitions into power-system folders with shallow lifecycle entrypoints.
    - Added rubber-lined boilers and steam engines as a production-science stepping-stone tier using plastic and lubricant.
    - Added tiered solar panels and accumulators with late-game Fulgora and Aquilo progression.
    - Added the power footprint benchmark covering solar, steam, nuclear, and fusion power lines.
    - Expanded nuclear progression with named reactor, heat exchanger, heat pipe, and steam turbine upgrade lines.
    - Added Promethium fusion reactor and generator upgrades as separate late-game technology tracks.

Version: 0.0.2
Date: 2025.04.17
  Bugfixes:
    - Fixed a launch bug when the Power Overload mod wasn't present.

Version: 0.0.1
Date: 2025.04.14
  Features:
    - Initial release.