The GREEN ROOM is the Irish Green Building Council’s annual non-residential sustainable building gathering. As the nearly Zero Energy Building (nZEB) (https://www.igbc.ie/nzeb/) standard came in force on 1st January 2019 for commercial buildings, this year’s conference explores how in the future we can deliver genuinely carbon neutral and circular buildings. The recent reports from IPCC show that we need to move far faster to avoid catastrophic climate change, and to do this we must think beyond nZEB