Pros and Cons of Dam

Takatoshi AKAI

JOCV/JICA

KWS Malindi Marine Park

Outline• Quiz

• Advantages of large dams

• Disadvantages of large dams

• Case Study: Kenya Power

Fire Power Land Thermal generationThermal Recycle

Nuclear Power Hydro Power Solar PowerTidal Current Power

Wind Power Wave Power Gas/Fire Power Bio mass power

Advantages of large dams 1/2

• It can produce cheap electricity (hydropower)

• It provides water for year round irrigation of cropland

Advantages of large dams 2/2

Downstream flooding is reduced

Reservoir is useful for recreation and fishing

Disadvantages of large dams

Enormous losses of water through evaporation

Especially in summer!

Mass of water will cause earthquakes

Danger of

collapse

flooded land destroys forests or cropland and displaces people

Expensive to build

Migration and spawning of some fish are disrupted, and killed by turbine.

Solution:Fish way

Case Study : Kenya Power produce electricity by nuclear

17 May 2012

They are planning to build 1 million KW class nuclear power station. According to Energy Regulation Committee （ ERC） , Kenya is

able to produce 1.5 million KW.However, ERC forecast, Kenya will require 1.8 million KW by 2016.

Kenya is 3rd country, which planning to build nuclear power plant by 2015.

Other countries, such as South Africa and Nigeria also planning to build nuclear power plant.

Conclusion