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. 2021 Aug 24;12:5097. doi: 10.1038/s41467-021-25300-4

Table 2.

RECC Global main input data and assumptions.

LED SSP1 SSP2
2050 World population (million) 8937 8246 8937
Global North average passenger-km/yr 2016/2050

2016: 6360

2050: 5990

2016: 6470

2050: 8600

2016: 6570

2050: 10,800

Global North average heated residential building m2/cap 2016/2050

2016: 27.3

2050 (No ME): 28.3

2050 (Full ME): 28.3

2016: 27.5

2050 (No ME): 40

2050 (Full ME): 31.5

2016: 27.7

2050 (No ME): 48.5

2050 (Full ME): 39

Global North average cooled residential building m2/cap 2016/2050

2016: 28.8

2050 (No ME): 19.4

2050 (Full ME): 19.4

2016: 28.9

2050 (No ME): 30

2050 (Full ME): 24.5

2016: 29

2050 (No ME): 42

2050 (Full ME): 33.6

Global South average passenger-km/yr 2016/2050

2016: 970

2050: 1610

2016: 1100

2050: 4050

2016: 1200

2050: 5900

Global South average heated residential building m2/cap 2016/2050

2016: 11

2050 (No ME): 18

2050 (Full ME): 18

2016: 11

2050 (No ME): 22

2050 (Full ME): 18.6

2016: 11

2050 (No ME): 27.3

2050 (Full ME): 22.1

Global South average cooled residential building m2/cap 2016/2050

2016: 12.3

2050 (No ME): 13.8

2050 (Full ME): 13.8

2016: 12.4

2050 (No ME): 22

2050 (Full ME): 18.7

2016: 12.4

2050 (No ME): 33

2050 (Full ME): 26.7

Material efficiency: (I): Industrial material efficiency, (D): Demand-side material efficiency
Material efficiency buildings, full implementation by 2040
 End of life recovery (I) 95% Recovery of steel and aluminium, 93% copper, 70% plastics
 Fabrication yield loss (I) Decrease to 10%
 New scrap diversion (I) Up to 80% of all fabrication scrap is used without re-melting
 Reuse at end of life (I) +29% Steel reuse, +27% concrete reuse
 Lifetime extension (D) Lifetime extended by 90%
 Material substitution (I) 85% Of new buildings 50% Of new buildings 10% Of new buildings
 Less material by design (I) 85% Of new buildings 55% Of new buildings 35% Of new buildings
 More intense use (D) None (baseline) −20% Of m2/cap, ≥LED −20% of m2/cap, ≥LED
Material efficiency vehicles, full implementation by 2040
 End of life recovery (I) 95% Recovery of steel and aluminium, 82% copper, 70% plastics
 Fabrication yield loss (I) Decrease to 10%
 New scrap diversion (I) Up to 80% of all fabrication scrap is used without re-melting
 Reuse at end of life (I) 20–40% Reuse 20–40% Reuse 9–20% Reuse
 Lifetime extension (D) Lifetime of PHEV, BEV, FCV extended by 20%
 Material substitution (I) For 60% of new vehicles For 60% of new vehicles 28–35% Of new vehicles
 Downsizing (D) Share of microcars and passenger cars 80–96% Share of microcars and passenger cars 70–95% Share of microcars and passenger cars 65–94%
 Car-sharing (D) 30% Service demand through car sharing 25% Service demand through car sharing 15% Service demand through car sharing
 Ride-sharing (D) 40% Increase in occupancy rate
Climate policy parameters
 GHG intensity of electricity generation, global average 241 g CO2-eq/kWh (no new policy), 87 g CO2-eq/kWh (2 °C climate policy)
 Global average share of electricity and H2, vehicles, 2016/2050 2016: 0%, 2050: 6–7% (no new policy), 39–40% (2 °C climate policy)
 Global average share of electricity and H2, residential buildings, 2016/2050 2016: 33%, 2050: 64–66% (no new policy), 67–70% (2 °C climate policy)