The Impact of Infrastructure Spending in Sub-Saharan Africa: A CGE Modeling Approach

Table 21

Externality parameter. Externality elasticities (𝜉) by sector.

Investment	𝜉 Parameter
	Sectors
	Crop agriculture	Export agriculture	Mining and gas	Industries	Construction	Private services
Road	0.05	0.075	0.085	0.035	0.055	0.025
Electricity	0.001	0.015	0.02	0.1	0.075	0.055
telecom	0.02	0.025	0.015	0.015	0.045	0.035