State Energy Plan

Building Energy Codes


Challenge: Ensure that buildings are designed to minimize operational costs for energy and to keep the state from falling behind other states as energy codes advance.
Background: Energy building codes are important for building owners to ensure that buildings are constructed to be as energy efficient as is practical, thereby minimizing operating costs. They are also important to utilities, since they control the energy use in new buildings. In 2009, Governor Sanford signed H.3550 into law that mandates the 2006 International Energy Conservation Code (IECC) for all new and renovated buildings, effective July 1, 2009, but removes the code from the normal adoption process. Future updated versions of the energy code must also be adopted by statutory amendment, unlike other building codes. The South Carolina General Assembly last updated the energy code to the 2009 IECC during the 2012 legislative session (Act 143) via a statutory amendment signed by the Governor. The most current iteration of the IECC is the 2015 version.
Approach: Convene a task force of building design and construction professionals, building owners and major tenants, local and state elected officials, general commercial contractors, commercial subcontractors, homebuilders, insurers, lenders, the Building Codes Council, local building officials, and the conservation community. The task force should begin investigating the impact of the adoption of the most current building efficiency standards (2015 IECC and American Society of Heating, Refrigeration, and Air Conditioning Engineers Standard 90.1-2013) and identifying the potential impact of outdated energy codes on the public’s health, safety, and wellness and on the cost to the public and private sector to operate and maintain the buildings they own or lease. The task force should also consider the question of whether the state’s energy code should be returned to the former adoption process through the state’s Building Codes Council.



AGENDA: July 19, 2017 (PDF)

AGENDA: August 8, 2017 (PDF)

Southeast Energy Efficiency Alliance: "Energy Codes in the Southeast" (PDF)

S. 579_20170323 (PDF)

SC Building Codes Bill Talking Points (PDF)

Optimize Energy Performance (PDF)

Update to ASHRAE Standard 90.1-2016 (PDF)

Update to ASHRAE Standard 90.1-2016- With Notes (PDF)

Model Codes Historic Savings (PDF)

Preliminary Energy Savings Analysis ANSI/ASHRAE/IES Standard 90.1-2016 (PDF)

International Codes- Adoption by State (PDF)



PNNL: Cost-Effectiveness of ASHRAE Standard 90.1-2013 for the State of South Carolina (PDF)

SEEA’s Residential Construction Data Review (2005-2013) (PDF)

DOE: Taylor, 2012 Methodology for Evaluating Cost-Effectiveness of Residential Energy Code Changes (PDF)

NAHB: 2009 IECC Cost-Effectiveness Analysis (PDF)

PNNL: Faithful and Gould, 2011 Cost Location Factors (PDF)

NAHB: 2012 IECC Cost-Effectiveness Analysis (PDF)

NAHB: 2012 IECC Cost-Effectiveness Analysis- DRAFT (PDF)

NAHB: Estimated Costs of the 2012 IRC Code Changes (PDF)

NAHB: Estimated Costs of the 2015 IRC Code Changes (PDF)

PNNL: Cost-Effectiveness Analysis of the Residential Provisions of the 2015 IECC for South Carolina (PDF)

PNNL: Cost-Effectiveness Analysis of the 2009 and 2012 IECC Residential Provisions – Technical Support Document (LINK)

Difference in Average Permit Valuation Per Single Family Dwelling From Previous Year (PDF)