IECC 2024 is the 2024 edition of the International Energy Conservation Code (IECC), a model code developed by the International Code Council (ICC) that sets minimum requirements for building energy efficiency. It is widely adopted in the US (often with amendments) and includes optional provisions that jurisdictions can adopt for EV charging readiness in new buildings and major renovations.
What IECC 2024 Covers
IECC 2024 primarily targets building energy performance, including:
– Building envelope performance (insulation, air sealing)
– HVAC efficiency and controls
– Lighting power and controls
– Compliance paths and documentation for permitting and inspection
IECC 2024 and EV Charging Infrastructure
In IECC 2024, EV charging infrastructure provisions are available as optional appendices that a state/city can choose to adopt:
– Appendix CG for commercial provisions (EV charging infrastructure guidance)
– Appendix RE for residential provisions (EV charging infrastructure guidance)
– The move to optional appendices is specifically noted in technical analysis of the 2024 code structure
Key EV-Readiness Concepts Used in IECC 2024
IECC 2024 EV language commonly organizes requirements around three readiness levels:
– EVSE-installed spaces: chargers installed and operational
– EV-ready spaces: electrical infrastructure in place to support future EVSE installation
– EV-capable spaces: pathways and space planning that make future EVSE installation easier (typically less complete than EV-ready)
How the EV Appendices Are Applied in Practice
If a jurisdiction adopts the EV appendices, projects may need to address:
– Minimum shares of parking spaces that are EV-capable, EV-ready, or EVSE-installed (depending on occupancy and local adoption choices)
– Electrical planning for future expansion (panel capacity, feeders, pathways) to reduce retrofit cost and disruption
– Documentation and inspection checkpoints tied to permitting workflows (as adopted locally)
Why IECC 2024 Matters for EV Charging Projects
For developers, property owners, and charging infrastructure planners, IECC 2024 can influence:
– How early EV-ready parking must be designed into new construction
– How much future charging can be deployed without major electrical rework
– Tender and compliance requirements for commercial real estate, multifamily, and municipal projects
– Long-term site scalability aligned with hosting capacity and load management strategies
Important Notes for Compliance
Because the IECC is a model code, real requirements depend on the local adoption:
– A city/state may adopt IECC 2024 with amendments, or adopt only certain appendices
– EV readiness rules can differ significantly between jurisdictions even when referencing “IECC 2024”
Related Glossary Terms
EV-ready Parking
EV-capable Infrastructure
Hosting Capacity
Load Balancing
Dynamic Load Management
Permitting
Feasibility Study
Commercial Real Estate Charging
Multi-family Charging
Electrical Panels