Modeling framework and data
Modeling framework
The GTAP – W model
Data
GTAP 9 database
International Model for Policy Analysis of
Agricultural Commodities and Trade
(IMPACT) model
Data aggregation
Regional aggregation
140 regions are aggregated into eight regions:
Egypt, Ethiopia, Sudan, the Equatorial Lakes (EQL)
region, Rest of East Africa, Rest of North Africa, Rest of
Sub-Sahara Africa and Rest of the World (ROW).
Sector aggregation
68 sectors are aggregated into twenty sectors
Eight are agricultural and twelve non-agricultural sectors
Endowments
Five endowments in the standard GTAP model
disaggregated into eight endowments in the GTAP-W model
Macro projection
The base year of the GTAP 9 Database used for
the study is 2011
Macro-projection implemented to update the
baseline to 2020
The economic effect of the GERD is evaluated
relative to this updated baseline equilibrium
Scenario design
Two components of the analysis:
First component:
assessing the economic effects of GERD operation
assuming it will be realized in 2024 (4 – year filling period)
Main assumptions underlying GERD operation (% change)
Ethiopia Sudan Egypt
Hydroelectricity
production
+142.7 +35 -8
Capital stock +6.3 +3 0
Irrigation water supply 0 0 +3.6
Scenario design (continued)
Second component
In this stage, the economic cost of delaying GERD
operation beyond 2024 is assessed
What is the economic consequence to East Nile
countries if GERD filling is extended beyond four years
to up to 10 years?
Economic repercussions of extending GERD operation is
examined for six scenarios
GERD operation realized in 5, 6, 7, 8, 9 and 10 years
Results evaluated relative to 4 – year GERD operation
Simulation results
Part I: Economic effects of GERD operation in 2024
The effect of GERD operation on real GDP
170
6788
1112
8070
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
Egypt Ethiopia Sudan Eastern Nile
Basin
Million
USD
Simulation results (continued)
The effect of GERD operation on household
income and consumption expenditure
14.05 14.12
1.62 1.64 0.92 0.91
0
2
4
6
8
10
12
14
16
HH
income
HH
consumption
expenditure
HH
income
HH
consumption
expenditure
HH
income
HH
consumption
expenditure
Ethiopia Sudan Egypt
Percent
Simulation results (continued)
Welfare effect of GERD operation
Measured in Equivalent variation: the amount of income that would have to be given to an
economy before building the dam so as to leave the economy as well off as it would be
after the dam has been built
1171
6834
1167
9172
0
2000
4000
6000
8000
10000
Egypt Ethiopia Sudan Eastern Nile
Basin
Million
USD
Simulation results (continued)
Part II: The economic consequences of extended GERD filling
Effect on Real GDP
170
140
152
165
179
194
210
6788
4990
4638
4151
3780
3780
3780
1112
842
840
839
837
835
834
8070
5972
5631
5155
4796
4809
4825
4 - YEAR 5 - YEAR 6 - YEAR 7 - YEAR 8 - YEAR 9 - YEAR 10 - YEAR
MILLION
USD
GERD FILLING PERIOD
Egypt Ethiopia Sudan Eastern Nile Basin
Simulation results (continued)
Effect on economic growth
0.04
0.03
0.03
0.04
0.04
0.04
0.04
1.5
0.9
0.7
0.53
0.41
0.32
0.25
1.2
0.92
0.91
0.91
0.91
0.9
0.9
4 - YEAR 5 - YEAR 6 - YEAR 7 - YEAR 8 - YEAR 9 - YEAR 10 - YEAR
PERCENT
GERD FILLING YEARS
Egypt Ethiopia Sudan
Simulation results (continued)
Welfare effect
1171
930
1073
1220
1377
1551
1746
6834
4733
4257
3844
3471
3118
2774
1167
1032
1033
1035
1036
1039
1042
9172
6695
6363
6099
5885
5707
5562
4 - YEAR 5 - YEAR 6 - YEAR 7 - YEAR 8 - YEAR 9 - YEAR 10 - YEAR
MILLION
USD
GERD FILLING PERIOD
Egypt Ethiopia Sudan Eastern Nile Basin
Simulation results (continued)
Loss in real GDP due to delayed GERD operations
30
158
297
448
612
790
1798
7140
12265
16787
20567
24347
270
1114
1955
2796
3635
4471
2098
8411
14518
20032
24815
29608
5 - YEAR 6 - YEAR 7 - YEAR 8 - YEAR 9 - YEAR 10 - YEAR
MILLION
USD
GERD FILLING PERIOD
Egypt Ethiopia Sudan Eastern Nile Basin
Simulation results (continued)
Welfare loss due to delayed GERD operation
170
310
462
626
805
999
6788
11778
16416
20567
24348
28128
1112
1954
2794
3633
4470
5306
8070
14042
19672
24827
29623
34432
5 6 7 8 9 10
MILLION
USD
GERD FILLING YEAR
Egypt Ethiopia Sudan Eastern Nile Basin