The 2021 update marks the next step towards making net zero universal and has charged forward in two key areas:
1) New provisions that incentivize building electrification and
2) A prescriptive path for single family / townhomes intending to help facilitate greater adoption.
And as always, they target the sweet spot where aggressive energy and carbon reduction overlap with cost effectiveness, taking into account a full range of variables including climate, source energy, building size and cost.
The Phius passive building (passive house) standard provides a quality-and-conservation-first framework for net zero building. They're internationally applicable and grounded in building science, best practices, the quality assurance necessary to deliver optimal results.