Table 2. Stock, flows, auxiliaries and... | Emerald Publishing

Table 2.

Stock, flows, auxiliaries and units

Stocks (goals)	Flows	Auxiliaries		Units
Internal combustion engine (ICE) stock Electric vehicles (EV) stock Fuel cell electric vehicles (FCEV) stock	ICE selling number Trade in ICE to EV Trade in EV to FCEV	Main system loop	Energy transition trend ICE Vehicle Stock EV vehicle stock FCEV vehicle stock	Project/year Unit/year Unit/year Unit/year
		Subsystem 1 ICE	CO₂ emissions ICE Environmental degradation Emission policy pressure ICE ICE attractiveness ICE sales Fuel consumption Operating cost of ICE Relative cost of ICE	tCO₂/year CO₂ Emission Index Number of regulations Rp incentive/year Sales unit/year Volume/year Rp/year Percentage
		Subsystem 2 EV	EV sales EV vehicle stock EV infrastructure Charging availability EV convenience EV attractiveness CO₂ emissions EV Policy pressure EV Policy support EV	Sales unit/year Unit/year Number of dealers Number of charging stations Customer survey index Rp incentive/year tCO₂/year Number of regulations Number of regulations
		Subsystem 3 FCEV	FCEV attractiveness FCEV vehicle stock Hydrogen convenience Hydrogen demand Hydrogen production Hydrogen refueling stations (HRS) Market potential FCEV FCEV acceptance User experience	Incentive/year Unit/year Customer survey index Ton/year Ton/year Number of stations Unit/year Customer satisfaction index Customer satisfaction index

Stocks (goals)	Flows	Auxiliaries		Units
Internal combustion engine (ICE) stock Electric vehicles (EV) stock Fuel cell electric vehicles (FCEV) stock	ICE selling number Trade in ICE to EV Trade in EV to FCEV	Main system loop	Energy transition trend ICE Vehicle Stock EV vehicle stock FCEV vehicle stock	Project/year Unit/year Unit/year Unit/year
		Subsystem 1 ICE	CO₂ emissions ICE Environmental degradation Emission policy pressure ICE ICE attractiveness ICE sales Fuel consumption Operating cost of ICE Relative cost of ICE	tCO₂/year CO₂ Emission Index Number of regulations Rp incentive/year Sales unit/year Volume/year Rp/year Percentage
		Subsystem 2 EV	EV sales EV vehicle stock EV infrastructure Charging availability EV convenience EV attractiveness CO₂ emissions EV Policy pressure EV Policy support EV	Sales unit/year Unit/year Number of dealers Number of charging stations Customer survey index Rp incentive/year tCO₂/year Number of regulations Number of regulations
		Subsystem 3 FCEV	FCEV attractiveness FCEV vehicle stock Hydrogen convenience Hydrogen demand Hydrogen production Hydrogen refueling stations (HRS) Market potential FCEV FCEV acceptance User experience	Incentive/year Unit/year Customer survey index Ton/year Ton/year Number of stations Unit/year Customer satisfaction index Customer satisfaction index

Source(s): Authors’ own work