EPRI: Electric Power Research Insitute

Generation Technologies Assessment


Nuclear

Nuclear energy relies on the enormous amount of energy contained in the nucleus of an atom. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Nuclear power plants use this energy to produce electricity.

The heat given off during fission in the reactor core is used to boil water into steam, which turns the turbine blades. As they turn, they drive generators that make electricity.

Nuclear power plants are highly reliable generation sources, often operating for 18-24 months without shutting down. Further, because combustion is not part of the process, there are minimal emissions. Compared to other large-scale power plants, nuclear plants are generally more expensive to construct due to safety and security requirements and a lengthy licensing process, but are less expensive to operate due to low and stable fuel prices. However, nuclear plants generate radioactive nuclear wastes that require safe storage and disposal over extended time periods.

Where Does Electricity Come From?

What Plants are Used the Most?

What Plants are Used the Most?

Where Does Electricity Come From?
Nuclear
Construction Cost
New plant construction cost for an equivalent amount of generating capacity
Electricity Cost
Projected cost to produce electricity from a new plant over its lifetime
Land Use
Area required to support fuel supply and electricity generation
Water Requirements
Amount of water required to generate equivalent amount of electricity
CO₂ Emissions
Relative amount of CO₂emissions per unit of electricity
Other air emissions
Relative amount of air emissions other than CO₂per unit of electricity
Waste Products
Presence of other significant waste products
Availability
Ability to generate electricity when needed
Flexibility
Ability to quickly respond to changes in demand
More Favorable Key Less Favorable