Question

Compare hydroelectric and natural coal-fired power plants based on sustainability (or triple bottom line) perspectives. What are the similarities and differences between their economics (1 point), social (1 point), and environmental (2 points) perspectives?

Answer 1

Perspectives/Comparison Basis	Hydroelectric plants	Coal Fired Plants
Economical Perspective	**Difference: It's erection cost is very high as it needs large area of land **Similarity: Produced power cost is almost same	**Difference: Erectection cost is low with respect to Hydroelectric plants **Similarity: Produced power cost is almost same
Social Perspective	**Similarity:Generates employment **Difference: It causes displacement of people living on land on which Hydroelectric plant and Reservoir was made	**Similarity:Generates employment **Difference:It do causes people displacement as needs smaller land or area than Hydroelectric plants
Environmental Perspective	**Similarity:It causes cutting of trees and so degrades environment **Difference: Do not cause air pollution at any stage of operation	**Similarity:It also cause cutting of trees so disturbing nearby environment and animals. **Difference: Cause air pollution if not properly operated

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