Massachusetts Energy Efficiency- Terms and Legislation

The commonwealth of Massachusetts has led the nation over the last decade on energy efficiency. Part of this legacy is due to signing into law the Massachusetts Global Warming Solution Acts (GWSA) in August of 2008. The law requires a Green House Gas (GHG) reduction to happen below 1990 levels with a goal of 80% reduction by 2050. Part of this legislation involved the net-zero stretch code, which was established within the building code appendix over a decade ago and since has been adopted by the majority of Massachusetts municipalities. Yet a decade later, the terms involved with these policies, such as net-zero, are often misused.

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