v Single family home

v50 year life time for house

vUse phase 91% of life cycle energy

vEEH 156 kWh m^-2 yr^-1

vSH  390 kWh m^-2 yr^-1

vEmbedded energy

vWood

vMetal in house and appliances

vConcrete

vLife cycle CO2

vEnergy efficient  370 metric tons

vTraditional construction – 1010 metric tons

•VIH smaller and better insulated

•VIH home 59% higher energy per m^2 to build

•VIH 17% lower energy use

•VIH has more residents per m^2 – social context

•CO2 emissions calculations depend on assumptions

•But could lead to subsidies for companies that make VIH