What has changed.
Model and data changes, recorded by publication date.
October 1, 2026 — version 1.0.0
- Added ten calculators with GET forms, visible methods, ranges and source links.
- Added generator whole-house examples, service and RV connections and essential-load presets.
- Pinned the PNNL IECC 2021 county dataset and documented its historic-boundary scope.
- Used current ENERGY STAR room-cooling and dehumidifier guidance, separating our own screening assumptions.
- Added genuine cached PVWatts representative-city solar responses, panel and roof checks, and EIA 2024 consumption references.
- Added canonical state-variant filtering, sitemaps, linked embeds, share images and a rate-limited read-only API.
Each calculation identifies model version 1.0.0 and its publication date.