Corrections and updates
We log every substantive correction and every change to a state's legal status here, newest first. Typo fixes are not listed.
| Date | Page | Change |
|---|---|---|
| 2026-10-30 | /calculator/ | Replaced peak-sun-hour scaling, empirical clipping and a shared self-use curve with state-specific PVGIS ERA5 hourly-derived production, PVWatts inverter conversion and load-limited self-use. Ten-year savings now recompute degradation, clipping and use each year. State tables and article examples use this same model. Added independent uncompressed Python reference tests and fail-closed weather loading. |
| 2026-10-30 | /states/colorado/ | Confirmed the 1,920 W cap from the signed act. Distinguished the August 12, 2026 effective date from additional January 1, 2027 sales/listing and property/HOA provisions, and clarified utility notice. |
| 2026-10-30 | /guides/is-plug-in-solar-safe/ | Removed the implication that staying under a wattage cap makes a shared circuit safe. Added UL Solutions guidance on combined current, circuit protection and plug-contact safety. |
| 2026-10-30 | /calculator/ | Fixed zero-cost payback and invalid input handling. Result links now preserve calculator settings, and estimates explicitly state their geographic and modeling limits. |
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