NREL/EnergyPlus
Nov 2024 – Dec 2025
9 Months active
Languages Used
C++IDFCMakePythonTeX
Technical Skills
C++ DevelopmentCode FormattingCode RefactoringEnergy ModelingHVAC SimulationHVAC Systems
Tanaya Mankad
PROFILE
Tanaya Mankad
Tanaya Mankad contributed to the NREL/EnergyPlus repository by developing and refining HVAC simulation features, focusing on cooling coil modeling, build system improvements, and code maintainability. She applied C++ and CMake to implement precise bug fixes, enhance configuration options, and standardize numerical precision, directly improving simulation reliability and model fidelity. Her work included validating coil calculations, decoupling component initialization, and upgrading dependencies such as LibKiva, which improved build stability and runtime compatibility. Tanaya also updated technical documentation and licensing, ensuring clarity and compliance. Her engineering approach emphasized robust error handling, maintainable code structure, and alignment with evolving modeling standards.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
21Total
Bugs
7
Commits
21
Features
9
Lines of code
875,611
Activity Months9
Your Network
33 peopleSame Organization
@bigladdersoftware.com2
Work History
December 2025
3 Commits • 2 Features
Dec 1, 2025December 2025 — EnergyPlus development focused on stabilizing core dependencies and improving user guidance. Delivered a major LibKiva upgrade (v0.6.7) with internal build refinements, removed deprecated functions, and updated the Boost dependency for better compatibility and performance. Also updated HVAC documentation to remove the term 'cooling' from ASHRAE205 coil references to align with current models and standards. These changes reduce maintenance overhead, improve runtime compatibility, and enhance user clarity, setting EnergyPlus up for smoother future integrations.
3 Commits • 2 Features
Dec 1, 2025December 2025 — EnergyPlus development focused on stabilizing core dependencies and improving user guidance. Delivered a major LibKiva upgrade (v0.6.7) with internal build refinements, removed deprecated functions, and updated the Boost dependency for better compatibility and performance. Also updated HVAC documentation to remove the term 'cooling' from ASHRAE205 coil references to align with current models and standards. These changes reduce maintenance overhead, improve runtime compatibility, and enhance user clarity, setting EnergyPlus up for smoother future integrations.
December 2025
November 2025
1 Commits • 1 Features
Nov 1, 2025In November 2025, delivered a targeted feature enhancement for EnergyPlus within the NREL repository, focusing on expanding HVAC configuration options and ensuring model string integrity. The work prioritized improving configurability for cooling coils and the reliability of IDF string generation.
November 2025
1 Commits • 1 Features
Nov 1, 2025In November 2025, delivered a targeted feature enhancement for EnergyPlus within the NREL repository, focusing on expanding HVAC configuration options and ensuring model string integrity. The work prioritized improving configurability for cooling coils and the reliability of IDF string generation.
October 2025
2 Commits • 1 Features
Oct 1, 20252025-10 monthly summary for NREL/EnergyPlus focusing on code quality and naming consistency improvements. Implemented minor formatting consistency in ShowDetailedSevereItemNotFound and renaming GetUserDefinedAirTerminal to GetUserDefinedAirComponent to improve API clarity. Changes are captured in two commits, enabling better maintainability and reducing future refactor risk. Overall impact includes clearer code paths, easier onboarding for new contributors, and reduced risk of misnamed components.
2 Commits • 1 Features
Oct 1, 20252025-10 monthly summary for NREL/EnergyPlus focusing on code quality and naming consistency improvements. Implemented minor formatting consistency in ShowDetailedSevereItemNotFound and renaming GetUserDefinedAirTerminal to GetUserDefinedAirComponent to improve API clarity. Changes are captured in two commits, enabling better maintainability and reducing future refactor risk. Overall impact includes clearer code paths, easier onboarding for new contributors, and reduced risk of misnamed components.
October 2025
September 2025
6 Commits • 2 Features
Sep 1, 2025Month 2025-09: Delivered reliability, testing refinements, and licensing clarity for NREL/EnergyPlus. Stabilized UserDefinedComponents initialization by decoupling ZoneHVAC and AirTerminal initialization, reducing startup conflicts and improving initialization reliability. Strengthened SolarHeatingPythonPlugin quality with regression-focused test improvements, module-name corrections, and annual-simulation readiness, elevating plugin robustness. Added an open-source license to SolarHeating.py to clarify redistribution terms. These efforts reduce risk, improve maintainability, and enable broader, longer-running validation for business-critical simulations.
September 2025
6 Commits • 2 Features
Sep 1, 2025Month 2025-09: Delivered reliability, testing refinements, and licensing clarity for NREL/EnergyPlus. Stabilized UserDefinedComponents initialization by decoupling ZoneHVAC and AirTerminal initialization, reducing startup conflicts and improving initialization reliability. Strengthened SolarHeatingPythonPlugin quality with regression-focused test improvements, module-name corrections, and annual-simulation readiness, elevating plugin robustness. Added an open-source license to SolarHeating.py to clarify redistribution terms. These efforts reduce risk, improve maintainability, and enable broader, longer-running validation for business-critical simulations.
August 2025
1 Commits
Aug 1, 2025Month: 2025-08 – Focused on correctness and reliability in EnergyPlus cooling coil modeling. Implemented a critical bug fix that prevents negative capacity calculations by validating cooling coil entering air temperature against the design outlet air temperature and surfacing a severe error when violated. The change provides a clear, actionable error message to stop invalid simulations and guide debugging. No new features shipped this month; the emphasis was on stability, accuracy, and maintainability of core cooling coil calculations, with end-to-end impact on result integrity and user trust.
1 Commits
Aug 1, 2025Month: 2025-08 – Focused on correctness and reliability in EnergyPlus cooling coil modeling. Implemented a critical bug fix that prevents negative capacity calculations by validating cooling coil entering air temperature against the design outlet air temperature and surfacing a severe error when violated. The change provides a clear, actionable error message to stop invalid simulations and guide debugging. No new features shipped this month; the emphasis was on stability, accuracy, and maintainability of core cooling coil calculations, with end-to-end impact on result integrity and user trust.
August 2025
May 2025
1 Commits • 1 Features
May 1, 20252025-05 Monthly Summary – NREL/EnergyPlus Key focus: code quality improvements and numerical precision alignment to support reliable energy simulations.
May 2025
1 Commits • 1 Features
May 1, 20252025-05 Monthly Summary – NREL/EnergyPlus Key focus: code quality improvements and numerical precision alignment to support reliable energy simulations.
February 2025
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for NREL/EnergyPlus. Focused on license-year compliance update in headers to reflect current year. Implemented a targeted, low-risk change across multiple header files; ensured no impact on build or runtime behavior; improved licensing accuracy and audit readiness.
1 Commits • 1 Features
Feb 1, 2025February 2025 monthly summary for NREL/EnergyPlus. Focused on license-year compliance update in headers to reflect current year. Implemented a targeted, low-risk change across multiple header files; ensured no impact on build or runtime behavior; improved licensing accuracy and audit readiness.
February 2025
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for NREL/EnergyPlus: Delivered critical bug fix in cooling system multi-speed control and implemented code cleanup to improve maintainability. The bug fix ensures the compressor is correctly identified as off when cooling load is present but the compressor is not running, preventing unintended activation; the UnitarySystem.cc cleanup removes redundant local variable calculations to simplify logic and improve readability. These changes enhance reliability, energy-model accuracy, and maintainability, laying groundwork for future feature work.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for NREL/EnergyPlus: Delivered critical bug fix in cooling system multi-speed control and implemented code cleanup to improve maintainability. The bug fix ensures the compressor is correctly identified as off when cooling load is present but the compressor is not running, preventing unintended activation; the UnitarySystem.cc cleanup removes redundant local variable calculations to simplify logic and improve readability. These changes enhance reliability, energy-model accuracy, and maintainability, laying groundwork for future feature work.
November 2024
4 Commits
Nov 1, 2024Concise monthly summary for 2024-11 focusing on NREL/EnergyPlus work: key bug fixes that improve DX coil accuracy, unitary system logic, and code quality, with measurable impact on model reliability and maintainability.
4 Commits
Nov 1, 2024Concise monthly summary for 2024-11 focusing on NREL/EnergyPlus work: key bug fixes that improve DX coil accuracy, unitary system logic, and code quality, with measurable impact on model reliability and maintainability.
November 2024
Activity
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Quality Metrics
Correctness93.8%
Maintainability91.4%
Architecture88.6%
Performance85.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakeIDFPythonTeX
Technical Skills
Bug FixingBuild ConfigurationBuild System ConfigurationC++C++ DevelopmentC++ developmentC++ programmingCMakeCMake configurationCode FormattingCode MaintenanceCode RefactoringConfigurationEnergy ModelingEnergyPlus IDF
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