NREL/openstudio-standards
Nov 2024 – Sep 2025
9 Months active
Languages Used
RubyYAMLJSONCSVN/AOpenStudioTextGit
Technical Skills
Configuration ManagementData ValidationFull Stack DevelopmentRubyTestingBackend Development
Chris Kirney
PROFILE
Chris Kirney
Chris Kirney contributed to the NREL/openstudio-standards repository by developing and refining backend features for building energy modeling and compliance workflows. Over nine months, he enhanced HVAC system logic, expanded data models, and improved test reliability, focusing on robust scenario handling and accurate financial analysis. His work included integrating Ruby and YAML-based configuration management, stabilizing CI/CD pipelines, and implementing data validation for energy and carbon pricing analytics. By addressing edge-case bugs and optimizing file path management, Chris ensured greater modeling fidelity and maintainability. His technical approach demonstrated depth in Ruby development, data integration, and test-driven software engineering for complex simulation environments.
Overall Statistics
Feature vs Bugs
64%Features
Repository Contributions
73Total
Bugs
10
Commits
73
Features
18
Lines of code
32,832
Activity Months9
Your Network
21 peopleSame Organization
@canada.ca1
Work History
September 2025
2 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for NREL/openstudio-standards focused on CI hygiene and workflow maintenance to reduce noise, improve maintainability, and reinforce robust development practices. Delivered targeted repository hygiene improvements with minimal risk and clear business value.
2 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary for NREL/openstudio-standards focused on CI hygiene and workflow maintenance to reduce noise, improve maintainability, and reinforce robust development practices. Delivered targeted repository hygiene improvements with minimal risk and clear business value.
September 2025
August 2025
12 Commits • 1 Features
Aug 1, 2025In August 2025, NREL/openstudio-standards delivered reliability and maintainability enhancements across costing data loading, dependency/test infrastructure, and boolean argument handling. Key outcomes include robust costing data ingestion via absolute paths, updated dependencies with improved CI reliability and coverage, and corrected boolean parsing. These changes reduce runtime errors in production pipelines, accelerate cost analyses, and simplify future maintenance.
August 2025
12 Commits • 1 Features
Aug 1, 2025In August 2025, NREL/openstudio-standards delivered reliability and maintainability enhancements across costing data loading, dependency/test infrastructure, and boolean argument handling. Key outcomes include robust costing data ingestion via absolute paths, updated dependencies with improved CI reliability and coverage, and corrected boolean parsing. These changes reduce runtime errors in production pipelines, accelerate cost analyses, and simplify future maintenance.
July 2025
13 Commits • 2 Features
Jul 1, 2025In July 2025, the project intensified efforts around reliability and fidelity of NECB2011 and related energy-model workflows in the NREL/openstudio-standards repository. The work focused on making sizing runs robust, improving geometry/zone modeling accuracy, and stabilizing the test infrastructure to support scalable validation and cloud-based testing. The outcome is a more dependable model-creation pipeline, better alignment with NECB2011/BTAPPRE1980 requirements, and a foundation for broader test automation.
13 Commits • 2 Features
Jul 1, 2025In July 2025, the project intensified efforts around reliability and fidelity of NECB2011 and related energy-model workflows in the NREL/openstudio-standards repository. The work focused on making sizing runs robust, improving geometry/zone modeling accuracy, and stabilizing the test infrastructure to support scalable validation and cloud-based testing. The outcome is a more dependable model-creation pipeline, better alignment with NECB2011/BTAPPRE1980 requirements, and a foundation for broader test automation.
July 2025
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for NREL/openstudio-standards: Delivered two primary feature sets focused on developer experience and test reliability. Features delivered: 1) Development workflow improvements: added Gemfile.lock.3.9.0 for VSCode dev containers and updated .gitnore to improve onboarding and reproducibility. Commits: 1817667d0e6c1134ae1d3caa31e49a3b3eec4890; b44a5dfce5073375ca74c91a474f7d7038c1992d. 2) HVAC and heat pump test reliability improvements: stabilized HVAC system modeling tests and heat pump test scenarios across weather conditions and fuel types to reduce flaky tests. Commits: 18be558d4dc4952839a23ed02f4f6b3acab5e61c; c4963bcc9a21695dabbe467cc27f895c108f1c3d. Major bugs fixed: resolved merge-related issues affecting test results and updated heatpump rules test to ensure consistency. Overall impact: onboarding accelerated and builds/tests reproducible; modeling results more reliable across scenarios; faster iteration cycles. Technologies/skills demonstrated: DevOps practices, containerized development, Ruby tooling, test stabilization, version control hygiene, cross-environment testing.
June 2025
4 Commits • 2 Features
Jun 1, 2025June 2025 monthly summary for NREL/openstudio-standards: Delivered two primary feature sets focused on developer experience and test reliability. Features delivered: 1) Development workflow improvements: added Gemfile.lock.3.9.0 for VSCode dev containers and updated .gitnore to improve onboarding and reproducibility. Commits: 1817667d0e6c1134ae1d3caa31e49a3b3eec4890; b44a5dfce5073375ca74c91a474f7d7038c1992d. 2) HVAC and heat pump test reliability improvements: stabilized HVAC system modeling tests and heat pump test scenarios across weather conditions and fuel types to reduce flaky tests. Commits: 18be558d4dc4952839a23ed02f4f6b3acab5e61c; c4963bcc9a21695dabbe467cc27f895c108f1c3d. Major bugs fixed: resolved merge-related issues affecting test results and updated heatpump rules test to ensure consistency. Overall impact: onboarding accelerated and builds/tests reproducible; modeling results more reliable across scenarios; faster iteration cycles. Technologies/skills demonstrated: DevOps practices, containerized development, Ruby tooling, test stabilization, version control hygiene, cross-environment testing.
March 2025
6 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for NREL/openstudio-standards focused on delivering business value through targeted feature enhancements, robustness improvements, and repository hygiene. Key outcomes include improved data reliability for pricing lookups, expanded NECB HVAC capabilities, and synchronized test artifacts with updated reporting and weather functionalities. The work reduced risk of data-access errors, increased test confidence, and streamlined maintenance via strategic cleanups.
6 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for NREL/openstudio-standards focused on delivering business value through targeted feature enhancements, robustness improvements, and repository hygiene. Key outcomes include improved data reliability for pricing lookups, expanded NECB HVAC capabilities, and synchronized test artifacts with updated reporting and weather functionalities. The work reduced risk of data-access errors, increased test confidence, and streamlined maintenance via strategic cleanups.
March 2025
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 — NREL/openstudio-standards: concise monthly summary focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated. The work delivered three primary feature areas along with a critical bug fix that together enhance long-term carbon pricing analysis, energy-cost modeling, and HVAC configuration reliability in support of more accurate scenario planning and budgeting. Key features delivered: - National Carbon Pricing Net Present Value (NPC NPV) analysis: updated BTAPData with a new Social Cost of Carbon discount rate; extended net_present_value logic; includes a method to retrieve national GHG costs per year for broader financial analysis. - Enhanced Utility Pricing Data for Energy Cost Calculations: added a detailed utility pricing CSV (2020-2100) with peak costs across building types, provinces, and fuel types to enable more granular energy cost calculations; added capability to estimate peak electricity cost for a given year using OERD data; introduced a pricing year selector (default 2020). - HVAC Heating Coil Type Handling Bug Fix: resolves an unnecessary conditional assignment for mau_heating_coil_type when a boiler is forced, preventing misconfiguration of heating coil fuel type assignments in HVAC systems. Overall impact and accomplishments: - Enables more accurate long-term carbon pricing modeling and financial scenario analysis at national and building-type granularity. - Improves energy-cost forecasting fidelity, supporting better budgeting, risk assessment, and policy analysis. - Improves HVAC reliability in modeling by eliminating edge-case misconfigurations. Technologies/skills demonstrated: - Data modeling and extension of financial analytics (BTAPData, net_present_value, national GHG cost retrieval). - Data integration and pricing analytics with CSV-based pricing data (2020-2100) and OERD-based peak-cost estimation. - Change management and traceability through commit-level transparency. Top 3-5 achievements: - NPC National Carbon Pricing NPV analysis (commit 2a055159cde04568ad585b9c7595fc99b27ce43a). - Enhanced Utility Pricing Data (commits 80def09d1ad1ba014d1fbb369fe60de8494eaae9 and c7027fdbcf9a1a57ae2bb14a4444093f9bea1ff7). - HVAC Heating Coil Type Handling Bug Fix (commit c8320ff8ef23f83396cb67be83b30711b1178771).
February 2025
4 Commits • 2 Features
Feb 1, 2025February 2025 — NREL/openstudio-standards: concise monthly summary focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated. The work delivered three primary feature areas along with a critical bug fix that together enhance long-term carbon pricing analysis, energy-cost modeling, and HVAC configuration reliability in support of more accurate scenario planning and budgeting. Key features delivered: - National Carbon Pricing Net Present Value (NPC NPV) analysis: updated BTAPData with a new Social Cost of Carbon discount rate; extended net_present_value logic; includes a method to retrieve national GHG costs per year for broader financial analysis. - Enhanced Utility Pricing Data for Energy Cost Calculations: added a detailed utility pricing CSV (2020-2100) with peak costs across building types, provinces, and fuel types to enable more granular energy cost calculations; added capability to estimate peak electricity cost for a given year using OERD data; introduced a pricing year selector (default 2020). - HVAC Heating Coil Type Handling Bug Fix: resolves an unnecessary conditional assignment for mau_heating_coil_type when a boiler is forced, preventing misconfiguration of heating coil fuel type assignments in HVAC systems. Overall impact and accomplishments: - Enables more accurate long-term carbon pricing modeling and financial scenario analysis at national and building-type granularity. - Improves energy-cost forecasting fidelity, supporting better budgeting, risk assessment, and policy analysis. - Improves HVAC reliability in modeling by eliminating edge-case misconfigurations. Technologies/skills demonstrated: - Data modeling and extension of financial analytics (BTAPData, net_present_value, national GHG cost retrieval). - Data integration and pricing analytics with CSV-based pricing data (2020-2100) and OERD-based peak-cost estimation. - Change management and traceability through commit-level transparency. Top 3-5 achievements: - NPC National Carbon Pricing NPV analysis (commit 2a055159cde04568ad585b9c7595fc99b27ce43a). - Enhanced Utility Pricing Data (commits 80def09d1ad1ba014d1fbb369fe60de8494eaae9 and c7027fdbcf9a1a57ae2bb14a4444093f9bea1ff7). - HVAC Heating Coil Type Handling Bug Fix (commit c8320ff8ef23f83396cb67be83b30711b1178771).
January 2025
10 Commits • 2 Features
Jan 1, 2025January 2025: This month's work focused on increasing robustness and reliability of NECB-compliant energy modeling in the NREL/openstudio-standards repository, with a strong emphasis on cooling tower integration, system-type logic, and test alignment. Key features delivered include enhanced cooling tower modeling across NECB standards (improved chiller-tower association, robust fan-power handling, and autosize thresholds to reduce EnergyPlus failures) and preservation of user-defined fuel types with a higher autosize threshold; these changes improve model fidelity and maintain user control. Major fixes addressed NECB system-type logic and autozone behavior (wet/wild/storage space handling and indexing in detect_air_system_type for single-fan configurations) and aligned test data to code changes. Together, these updates increase modeling reliability, reduce run-time issues, and strengthen test coverage for NECB scenarios. Technologies/skills demonstrated include OpenStudio/Ruby code changes, autosize logic, NECB-rule implementation, and test-driven development with updated unit tests.
10 Commits • 2 Features
Jan 1, 2025January 2025: This month's work focused on increasing robustness and reliability of NECB-compliant energy modeling in the NREL/openstudio-standards repository, with a strong emphasis on cooling tower integration, system-type logic, and test alignment. Key features delivered include enhanced cooling tower modeling across NECB standards (improved chiller-tower association, robust fan-power handling, and autosize thresholds to reduce EnergyPlus failures) and preservation of user-defined fuel types with a higher autosize threshold; these changes improve model fidelity and maintain user control. Major fixes addressed NECB system-type logic and autozone behavior (wet/wild/storage space handling and indexing in detect_air_system_type for single-fan configurations) and aligned test data to code changes. Together, these updates increase modeling reliability, reduce run-time issues, and strengthen test coverage for NECB scenarios. Technologies/skills demonstrated include OpenStudio/Ruby code changes, autosize logic, NECB-rule implementation, and test-driven development with updated unit tests.
January 2025
December 2024
16 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for NREL/openstudio-standards: Delivered substantial feature work and data integrity improvements that enhance model fidelity, compliance readiness, and maintenance efficiency. The month focused on HW loop logic, zoning/system assignment, FPFC integration, and cleanup of obsolete systems, with traceable changes across Ruby logic and YAML/JSON fixtures.
December 2024
16 Commits • 3 Features
Dec 1, 2024December 2024 performance summary for NREL/openstudio-standards: Delivered substantial feature work and data integrity improvements that enhance model fidelity, compliance readiness, and maintenance efficiency. The month focused on HW loop logic, zoning/system assignment, FPFC integration, and cleanup of obsolete systems, with traceable changes across Ruby logic and YAML/JSON fixtures.
November 2024
6 Commits • 3 Features
Nov 1, 2024November 2024 performance summary for NREL/openstudio-standards focused on expanding BTAP CLI capabilities, enriching data handling, and stabilizing test quality to accelerate robust releases and improve user-facing outcomes.
6 Commits • 3 Features
Nov 1, 2024November 2024 performance summary for NREL/openstudio-standards focused on expanding BTAP CLI capabilities, enriching data handling, and stabilizing test quality to accelerate robust releases and improve user-facing outcomes.
November 2024
Activity
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Quality Metrics
Correctness84.2%
Maintainability86.2%
Architecture78.4%
Performance73.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
CSVGitJSONN/AOpenStudioRubyTextYAML
Technical Skills
Backend DevelopmentBug FixingBuilding Energy ModelingBuilding Performance AnalysisBuilding Performance SimulationBuilding Standards ComplianceBuilding energy modelingCI/CDCarbon PricingCode CleanupCode CorrectionCode MaintenanceCode RefactoringCode ReversionConfiguration Management
Repositories Contributed To
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