Page 11 - CIWA Climate Resilience & Mitigation Assessment

CIWA Climate Resilience & mitigation Assessment

Analysis and Results

For the quantitative analysis, the investment and The analysis covers the Kariba Dam The analysis covers the
projects considered include greenfield hydropower Kariba Rehabilitation, Kandadji Dam, Batoka Hydroelectric
plants and rehabilitation of existing dams. A distinction Scheme, Nsongezi Hydropower project, Rusumo Falls
is made between potential investments—that is, Hydroelectric Scheme, and Luapula Transfer. Table 1
investment opportunities explored by feasibility studies summarizes the main characteristics of these hydropower
or ESIAs sponsored by CIWA but not yet realized—and plants, the amount of GHG mitigation expected, and how
mobilized investments. CIWA influenced these potential and mobilized investments.

Table 1: CIWA-influenced hydropower projects.

Kariba Dam Rusumo Falls
Characteristics Batoka Gorge Luapula Transfer Kandadji Dam Nsongezi Dam
Rehabilitation Hydro

Countries Zambia, Zimbabwe Zambia, Zimbabwe Zambia, DRC Niger, Nigeria Burundi, Rwanda, Uganda, Tanzania
Benefiting Tanzania

Greenfield / Greenfield Rehabilitation Greenfield Greenfield Greenfield Greenfield
Rehabilitation

Potential / Potential Mobilized Potential Mobilized Mobilized Mobilized
Mobilized

Installed 2,400 2,130²⁴ 789 130 80 39
capacity (MW)

Reservoir area 23 5,500 0 2.28 0 0
(km²)

Electricity
generated 10,215,000 10,035,000 3,877,000 225,000 448,000 273,312
annually
(MWh/year)
Grid Emissions
Factor 0.996 0.996 0.9958 0.578 0.767 0.274
(tCO₂eq/MWh)
GHG emissions
from reservoir 3,345 799,986 0 332 0 0
(tCO₂eq/year)
Mitigated CO₂ per
year 10,168,752 9,192,867 3,860,717 129,718 343,616 74,887
(tCO₂eq/year)
Analyzed financial Produced studies Explored potential Supported Supported NBI to Conducted
implications of the on rehabilitation of cooperative legal analytical study of convene pre-feasibility of
investment, the dam that led to and institutional resettlement best stakeholders for project profile
facilitated the decision to arrangements for a practices. mobilization, and coordinated
negotiations to invest in safety and future Luapula River planning, and resource
review findings and reliability Authority. creation of the mobilization,
CIWA’s influence encourage renewal improvements. resettlement action institutional
of the project, plans. support, and
additional facilitation of
engineering studies, stakeholder
and investment engagement
preparation.

Note: Kariba Dam refers to consolidated hydropower capacity (e.g., both Kariba North and South); Kandadji refers to the completed dam (including
after rehabilitation, e.g., elevation increases from 224 to 228m) and hydropower project. The electricity generated and associated GHGs mitigated
corresponds to only the additional electricity generated following this rehabilitation; Luapula, Rusumo Falls and Nsongezi are run-of-river
hydropower plants.

²⁴ Of the 2,130MW installed, 1,080 is for Kariba North (in Zambia), and 1,050 MW for Kariba South (in Zimbabwe). The only extension in capacity occurring during CIWA operations is
the 300MW Kariba South Extension (which together with the existing 750MW add up to the 1,050MW). However, given that the rehabilitation work was related to dam safety and
not the additional 300MW, we have used a "no dam" scenario rather than focusing on the additional capacity. The mitigated GHG is therefore for the entire 2,130MW, given that the
work influences the entire dam, and consequently the two associated hydropower plants.
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