Table of Contents: Guide for Module Developers — EnergyPlus 26.1

Table of Contents: Guide for Module Developers — EnergyPlus 26.1

Table of Contents

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Introduction
Modules in EnergyPlus
Input Concepts
Module Structure
EnergyPlus Calling Structure
HVAC Network
EnergyPlus Services
Output
- How Do I Output My Variables?
- Output Variable Dos and Don’ts
Energy Management System
- EMS Actuator Interface
Running/Testing EnergyPlus – for Developers
- Environment Variables to Assist Running
  - DDOnly: Design Days Only
- Air Loop Simulation Environment Variables
  - TRACK_AIRLOOP: Runtime performance tracker for air loop simulation
    - TRACE_AIRLOOP: Air loop simulation tracer
    - TRACE_HVACCONTROLLER: Individual HVAC controller tracer
Quick Procedure Outline For Making Code Changes to EnergyPlus
Important Rules for Module Developers
Appendix A. DataGlobals and DataEnvironments Modules
- DataGlobals
- DataEnvironment
Appendix B. Submissions and Check-ins
Appendix C. Documentation Specifics
Appendix D. Module, Subroutine, Function Templates
Appendix E. Test File Documentation
Appendix F. New or Changed Proposal Feature Template
Appendix G.

Documentation content copyright © 1996-2026 The Board of Trustees of the University of Illinois and the Regents of the University of California through the Ernest Orlando Lawrence Berkeley National Laboratory. All rights reserved. EnergyPlus is a trademark of the US Department of Energy.

This documentation is made available under the EnergyPlus Open Source License v1.0.