Table 3 List of sensitivity scenarios.

From: Near and long-term perspectives on strategies to decarbonize China’s heavy-duty trucks through 2050

Scenario

Input parameter sensitivity

Frozen energy intensity

No change in HDT energy intensities to set maximum upper bound for energy consumption given existing activity growth and fuel share projections

Lower energy intensity reduction

Tests 50% of modeled energy efficiency improvement under Short-term Strategies Scenario, to account for uncertainties in future technological or policy progress

Higher fleet activity

Tests 50% increase in total fleet activity (i.e., vehicle-kilometers travelled) to account for uncertainties in faster rise in vehicle stock, higher than projected average distance travelled per vehicle, or a combination of both

NEV HDT early adoption of hydrogen fuel cell

Tests the earlier and accelerated adoption of hydrogen fuel cell heavy-duty trucks instead of accelerated adoption of electric heavy-duty trucks due to uncertainties in technological adoption. Assumes that hydrogen fuel cell trucks will reach 30% of the heavy-duty stock by 2050, with electric trucks only reaching 15% by 2050

NEV HDT early adoption of plug-in hybrid

Tests the alternative earlier adoption of plug-in hybrid diesel heavy-duty trucks instead of battery electric trucks due to potential cost and range advantages. Assumes that plug-in hybrid HDT adoption will follow same adoption rates as battery electric through 2040, and reach 20% share of heavy-duty stock by 2050