Changelog
What changed in our data and methods, and when.
- Launched UnbiasedSolar.com with the hourly solar calculator, quote comparison, scenario comparison and 13 standalone tools.
- Utility prices from EIA Form 861 (2025 final), adjusted to 2026 with monthly data through July 2026.
- Net metering and incentive research for all 50 states and D.C., current as of October 2026, including the end of the 25D homeowner tax credit and the September 2026 court rulings on Solar for All.
- Current rate plans for 45 large utilities and California's 2026 hourly export values.
- Installer directory built from LBNL Tracking the Sun (2026 edition) and California DGStats (through August 2026).
- Equipment database from the California Energy Commission's October 2026 lists.