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| 2026-04-13 19:21:22 -0500 | answered a question | Weather file not running in BEopt BEopt is supposed to create the weather cache file on the fly but there appear to be situations where it doesn't. If you |
| 2026-03-19 16:44:07 -0500 | answered a question | Is the supply-air temperature a variable that exists among the outputs in BeOpt? BEopt does not make the hourly supply air temperatures available to the user. Though if you are proficient at using Ener |
| 2026-03-09 13:50:25 -0500 | commented answer | BEopt Room AC % Conditioned I am running v3b on Windows 11 without a problem and I know many others are as well. If you can provide any information |
| 2026-03-09 13:35:51 -0500 | edited answer | BEopt Room AC % Conditioned The intent of the Energy Multiplier is indeed to scale the energy use of the RAC(s) relative to 100% coverage. I created |
| 2026-03-09 13:32:32 -0500 | answered a question | BEopt Room AC % Conditioned The intent of the Energy Multiplier is indeed to scale the energy use of the RAC(s) relative to 100% coverage. I created |
| 2026-03-08 12:54:16 -0500 | answered a question | How to prevent grid charging when using `TrackChargeDischargeSchedules` in `ElectricLoadCenter:Distribution`? Have you tried using TrackFacilityElectricDemandStoreExcessOnSite for the Storage Operation Scheme? As per the documenta |
| 2026-03-08 12:41:00 -0500 | commented question | BEopt Room AC % Conditioned Can you share your BEopt file via Google Drive or Dropbox? |
| 2026-02-26 10:27:50 -0500 | received badge | ● Rapid Responder (source) |
| 2026-02-26 10:27:50 -0500 | answered a question | Feature Request / Discussion — ZoneList Support as Key Value in Output:Variable and Meter:Custom Not a full solution, but note that E+ 8.7 and newer allow you to use regular expressions in Output:Variable. It obviousl |
| 2026-02-11 16:55:09 -0500 | commented question | beopt, How do you upload TMY3 data to the software downloaded from the NSRDB data viewer I'd suggest using the Gunnison TMY3 weather file. It's at similar elevation to Salida and should have similar weather. |
| 2026-02-09 09:56:18 -0500 | answered a question | Partially underground floor with Open studio + Sketchup plugin. It sounds like you are referring to a walkout basement. The best model in EnergyPlus for this foundation type is Kiva. I |
| 2026-02-05 16:41:39 -0500 | answered a question | The website https://bcl.nrel.gov/ is not working... It was indeed down for a couple days, but is back up as of Jan 28. Credit to @kflemin. |
| 2026-01-21 14:50:02 -0500 | commented answer | How Do I set the "Field Set: Surface Name, Fraction of Radiant Energy to Surface" parameter for my "ZoneHVACCoolingPanelRadiantConvectiveWater" using OpenStudioSDK Seems worth requesting these inputs as an enhancement at https://github.com/NREL/OpenStudio/issues |
| 2026-01-20 11:58:01 -0500 | received badge | ● Rapid Responder (source) |
| 2026-01-20 11:58:01 -0500 | answered a question | Duct Leakage in EnergyPlus There are two main approaches: Use Airflow Network: This is a detailed, pressure-based calculation. It can handle comp |
| 2026-01-07 10:41:44 -0500 | received badge | ● Rapid Responder (source) |
| 2026-01-07 10:41:44 -0500 | answered a question | OpenStudio Radiance Measure The error message says "Perl could not be found in path". You need to install perl and then add it to your PATH. |
| 2025-12-02 10:46:59 -0500 | commented answer | ResStock building model generation It shouldn't have produced an IDF, I filed a bug report here. You basically asked for one datapoint, which did not meet |
| 2025-12-02 10:46:09 -0500 | commented answer | ResStock building model generation It shouldn't have produced an IDF, I filed a bug report here. You basically asked for one datapoint, which did not meet |
| 2025-12-02 10:21:19 -0500 | commented answer | EMS does not turn off ideal load Another option is to actuate the Heating/Cooling Availability Schedules (e.g., here) instead of the setpoint. |
| 2025-12-02 10:19:22 -0500 | commented answer | EMS does not turn off ideal load Have you tried using the Output:EnergyManagementSystem object to verify that your EMS program is doing what you expect? |
| 2025-12-01 11:23:57 -0500 | edited answer | How does E+ determine wind pressure coefficients on surfaces that face an internal yard within the building? EnergyPlus is not a CFD program. As described under Wind Pressure Coefficient Type, the default option of SurfaceAverage |
| 2025-12-01 11:23:07 -0500 | answered a question | How does E+ determine wind pressure coefficients on surfaces that face an internal yard within the building? EnergyPlus is not a CFD program. As described under Wind Pressure Coefficient Type, the default option of SurfaceAverage |
| 2025-12-01 11:11:57 -0500 | answered a question | EMS does not turn off ideal load One common approach to disabling an HVAC system using EMS is to change the setpoint schedule so that the setpoint is ver |
| 2025-12-01 11:11:57 -0500 | received badge | ● Rapid Responder (source) |
| 2025-11-24 19:02:39 -0500 | commented question | error "Creating GenericModelObject for IddObjectType 'CommentOnly’ It's not an error, it's a warning. Maybe @"Julien Marrec" knows why it's happening. But I'm guessing it's safe to ignore |
| 2025-11-24 19:02:14 -0500 | commented question | error "Creating GenericModelObject for IddObjectType 'CommentOnly’ It's not an error, it's a warning. Maybe @Julien Marrec knows why it's happening. But I'm guessing it's safe to ignore - |
| 2025-11-24 10:17:48 -0500 | edited answer | Rotating PV in EnergyPlus The PVWatts model has the ability to model one axis and two axis rotating arrays. See the Array Type field. |
| 2025-11-23 09:05:29 -0500 | received badge | ● Rapid Responder (source) |
| 2025-11-23 09:05:29 -0500 | answered a question | Rotating PV in EnergyPlus The PVWatts model has the ability to model one axis and two axis rotating arrays. See the Array Type field. |
| 2025-11-21 16:51:50 -0500 | received badge | ● Rapid Responder (source) |
| 2025-11-21 16:51:50 -0500 | answered a question | EV behaviour for different timestep lengths If I understand correctly, you changed the IDF timestep to hourly but used the same 15-min stochastic schedule CSV. If y |
| 2025-11-20 15:57:10 -0500 | commented question | self discharge rate for battery I'm not answering the question, but isn't it a really small effect? According to https://www.ufinebattery.com/blog/why-d |
| 2025-11-20 14:04:03 -0500 | commented question | Conversion of HPXML to OSM with Python Can you ask that in a new Unmet Hours question? That is a ResStock/stochastic occupancy model question and not related t |
| 2025-11-13 22:15:09 -0500 | commented question | Anyone know when Version 25.2.0 will be posted? Might be tomorrow, according to https://github.com/NREL/EnergyPlus/releases/tag/v25.2.0-RC3 |
| 2025-11-12 09:51:59 -0500 | commented question | Conversion of HPXML to OSM with Python You can use the -m or --measures_only flag to skip the simulations. If you use --help, you can see all of the run_analys |
| 2025-11-07 08:42:21 -0500 | commented answer | Direct ON-OFF Access to Heating/Cooling System via Python API Have you seen the Temperature Difference Between Cutout And Setpoint field? It allows modeling the on/off cycling of equ |
| 2025-11-07 08:42:04 -0500 | commented answer | Direct ON-OFF Access to Heating/Cooling System via Python API Have you seen the Temperature Difference Between Cutout And Setpoint? It allows modeling the on/off cycling of equipment |
| 2025-11-07 08:36:16 -0500 | edited answer | What's the workflow for importing the NREL HPXML into OpenStudio? It's not as easy as it probably should be, but the simplest path is to use the same versions of ResStock and OpenStudio |
| 2025-11-06 15:05:18 -0500 | commented question | Conversion of HPXML to OSM with Python There is some description of how to do this for an earlier ResStock dataset, but I imagine most of it applies. See here |
| 2025-11-06 11:40:38 -0500 | commented question | Conversion of HPXML to OSM with Python Can you say where your HPXML file came from? There are lots of different flavors of HPXML files (some specifically used |
| 2025-11-04 09:02:04 -0500 | commented answer | Negative cooling
load That issue would not cause a negative cooling load, just a mis-sized cooling system. I also ran the file with your EPW a |
| 2025-10-30 16:07:21 -0500 | answered a question | Output:Variable customization You should be able to do this using the Meter:Custom and Meter:CustomDecrement objects. These will create custom meters |
| 2025-10-30 16:07:21 -0500 | received badge | ● Rapid Responder (source) |
| 2025-10-29 17:16:54 -0500 | commented question | Energyplus chiller curve dataset bug Alternatively, you can report a bug at https://github.com/NREL/EnergyPlus/issues to have an EnergyPlus developer work on |
| 2025-10-29 17:12:06 -0500 | commented question | Energyplus chiller curve dataset bug The Energy+.idd file should be the source of truth. If you want to contribute to EnergyPlus, see the contribution policy |
| 2025-10-27 16:45:14 -0500 | commented answer | Missing EMS Actuator for Unitary Heat Pump air-to-air It is simply not available. You could request the feature at https://github.com/NREL/EnergyPlus/issues if you want, I do |
| 2025-10-27 16:00:12 -0500 | answered a question | Missing EMS Actuator for Unitary Heat Pump air-to-air EMS is used to change building values during the simulation (e.g., look at a value calculated during one timestep and ch |
| 2025-10-27 16:00:12 -0500 | received badge | ● Rapid Responder (source) |
| 2025-10-27 10:31:37 -0500 | commented question | EnergyPlus Crashes When Adding Windows to Rotating Building Model Using Site:VariableLocation EnergyPlus should never crash. And I can confirm the Name field is being incorrectly ignored, it's in the IDD/documentat |