Update Changelog.md

Changelog.md

@@ -24,15 +24,17 @@ __New Features__
   - Adds optional `HVACSizingControl/ManualJInputs/InfiltrationMethod` input to specify which method to use for infiltration design load calculations.
   - Updates heat pump HERS sizing methodology to better prevent unmet hours in warmer climates.
   - Misc Manual J design load calculation improvements.
+  - **Breaking change**: Disaggregates "Walls" into "Above Grade Walls" and "Below Grade Walls" in results_design_load_details.csv output file.
 - Advanced research features:
   - Optional input `SimulationControl/AdvancedResearchFeatures/OnOffThermostatDeadbandTemperature` to model on/off thermostat deadband with start-up degradation for single and two speed AC/ASHP systems and time-based realistic staging for two speed AC/ASHP systems.
   - Optional input `SimulationControl/AdvancedResearchFeatures/HeatPumpBackupCapacityIncrement` to model multi-stage electric backup coils with time-based staging.
   - Maximum power ratio detailed schedule for variable-speed HVAC systems can now be used with `NumberofUnits` dwelling unit multiplier.
 - BuildResidentialHPXML measure:
   - **Breaking change**: Replaced `slab_under_width` and `slab_perimeter_depth` arguments with `slab_under_insulation_width` and `slab_perimeter_insulation_depth`
   - **Breaking change**: Replaced `schedules_vacancy_periods`, `schedules_power_outage_periods`, and `schedules_power_outage_periods_window_natvent_availability` arguments with `schedules_unavailable_period_types`, `schedules_unavailable_period_dates`, and `schedules_unavailable_period_window_natvent_availabilities`; this improves flexibility for handling more unavailable period types.
-- **Breaking change**: Disaggregates "Walls" into "Above Grade Walls" and "Below Grade Walls" in results_design_load_details.csv output file.
-- Updates `openei_rates.zip` with the latest residential utility rates from the [OpenEI U.S. Utility Rate database](https://apps.openei.org/USURDB/).
+- Utility bill calculations:
+  - Allows OpenEI URDB tariffs that have $/day fixed charges.
+  - Updates `openei_rates.zip` with the latest residential utility rates from the [OpenEI U.S. Utility Rate database](https://apps.openei.org/USURDB/).
 - Adds a warning if the sum of supply/return duct leakage to outside values is very high.
 
 __Bugfixes__