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Board restores Appendix RM and reinstates debiasing in R405 table
Summary
The Low Energy and Carbon Code Board voted to restore Appendix RM (energy-cost pathway) without the debiased R405 table and separately approved reinstating debiasing elements in the R405 simulated-performance table after debate about modeling, fuel baselines and equity between electric and gas comparisons.
The Low Energy and Carbon Code Board on a pair of votes this meeting decided to (1) restore Appendix RM — the cost-based energy compliance appendix — without the debiased R405 table, and (2) reinstate the debiasing elements in the R405 site-energy table used for the simulated building-performance path.
Board members said the two actions were related but distinct: restoring Appendix RM gives local jurisdictions the option to use an energy-cost-based pathway, while the R405 vote restored the “debiasing” baseline adjustments in the site-energy tables used for whole-building modeling.
Dan (board member) presented the Appendix RM motion, saying the change “was coming from builders in our…
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