Zero Energy Certification 1.0 Handbook
April 2025
  • April 2025
Table of Contents
Zero Energy Certification 1.0 Handbook
  • April 2025
    • Zero Energy Certification 1.0 Handbook — April 2025
GrabGrab
GrabGrab
  • April 2025
  • Zero Energy 1.0 Handbook
    • Overview
    • Clarifications
      • Energy Budget Clarifications
      • Energy Use Clarifications
      • Performance Period Clarifications
      • Renewable Energy Clarifications
      • Scale Jumping
    • Exceptions
    • Documentation Requirements
    • Case Studies
    • Resources
  • ILFI Program Glossary
    • A-G Terms
    • H-P Terms
    • Q-Z Terms
  • Summary of Changes
    • April 2025 Updates
      • Changes to Clarifications (Q1 2025)
    • October 2024 Updates
      • Changes to Energy Budget, Energy Use, and Renewable Energy (Q3 24)
      • Changes to Documentation Requirements (Q3 24)
    • May 2024 Updates
      • Changes Throughout (Q1 24)
      • Changes to Energy Budget, Energy Use, and Renewable Energy (Q1 24)
      • Changes to Scale Jumping (Q1 24)
      • Changes to the Exceptions (Q1 24)
      • Changes to the Resources (Q1 24)
      • Changes to the Glossary (Q1 24)
    • July 2023 Updates
      • Changes Throughout (Q2 23)
      • Changes to Documentation Requirements (Q2 23)
    • Previous versions of the Handbook
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Changes to the Glossary (Q1 24)

May 2024
Corrections made as needed throughout for grammar, punctuation, nomenclature, typos, and links.

The following definitions have been changed or added:

  • District Energy System (DES)
  • Embodied Carbon Emissions
  • Exterior Materials
  • Final Energy
  • Fugitive Emissions
  • Global Warming Potential (GWP)
  • Historic Hydrology
  • Interior Materials
  • Multifamily
  • Operational Carbon
  • Project Boundary
  • Project Floor Area
  • Single Family Home or Residence
Changes to the Resources (Q1 24)
July 2023 Updates
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