Code of Massachusetts Regulations
225 CMR - DEPARTMENT OF ENERGY RESOURCES
Title 225 CMR 22.00 - Massachusetts Stretch Code and Specialized Code 213 For Low-rise Residential
Chapter 5 - [RE] EXISTING BUILDINGS
Section RC102 - ZERO ENERGY PATHWAY

Universal Citation: 225 CMR 22.00 MA Code of Regs RC102

Current through Register 1531, September 27, 2024

RC102 Replace Section RC102 and Table RC102.2 as follows:

RC102.1 General. New zero energy buildings shall comply with Section RC102.2 and demonstrate a certified HERS rating of 0 or less and comply with Section R406, or complete Design Certification to the Phius ZERO standard and comply with Section R405.

RC102.2 Energy Rating Index Zero Energy Score. Compliance with this section requires that the final HERS rated design be shown to have a score less than or equal to the values in Table RC102.2 when compared to the HERS reference design determined in accordance with RESNET/ICC 301 for both of the following:

1. HERS value not including on-site power production (OPP) calculated in accordance with RESNET/ICC 301.

2. HERS value including on-site power production calculated in accordance with RESNET/ ICC 301 with the OPP in Equation 4.1.2 of RESNET/ICC 301.

TABLE RC102.2 MAXIMUM HERS RATING INDEXa

FUEL USAGE

HERS RATING INDEX NOT INCLUDING OPP

HERS RATING INDEX INCLUDING OPP

All Electric

45

0

Mixed-Fuel

42

0

a The building shall meet the requirements of Table R406.2, and the building thermal envelope shall be greater than or equal to the levels of efficiency and SHGC in Table R402.1.2 or R402.1.3.

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