Midterm Review (Electricity)

Question 1

If you analyze an electricity generation process

Answer 1

Extraction (wind and solar don't have this step) coal and gas does
	Transported 
	Converted 
	Not stored 
	Distributed 
	Land use

Question 2

Pros and cons of wind, solar, and biomass

Answer 2

Wind
Pro: decreases CO2 emissions, fairly cheap
Con: land use, intermittent power

Solar
Pro: decreases CO2 emissions, becoming cheaper
Con: still expensive, chemical intensive manufacturing

Biomass
Pro: decreases CO2, decreases waste
Con: requires land, emissions from harvesting

Question 3

Why do we consider transportation in life cycle perspective?

Answer 3

Emissions in all phases