The Cost of Energy
Energy use can carry a hefty price tag—and not just in money. The cost to our environment, to national security, and to the prospect of future sustainability is sometimes hard to calculate in dollar terms, but nonetheless very real in practical terms. What factors should we consider as we make decisions about energy options for the future?
Understanding EfficiencyLearn the significance of energy efficiency
The Promise of Better LightingEnergy savings through lighting technology
Our Energy SystemA visualization of all our energy sources
- Intermittent Energy Source
An energy source characterized by output that is dependent on the natural variability of the source rather than the requirements of consumers. Solar energy is an example of an intermittent energy source since it is only available when the sun is shining. Wind is also an intermittent energy source.
Search the National Academies Press website by selecting one of these related terms.
- America’s Energy Future: Technology and Transformation (2009)
- Electricity from Renewable Resources: Status, Prospects, and Impediments (2010)
- Liquid Transportation Fuels from Coal and Biomass: Technological Status, Costs, and Environmental Impacts (2009)
- Assessing Economic Impacts of Greenhouse Gas Mitigation: Summary of a Workshop (2009)
- Coal: Research and Development to Support National Energy Policy (2007)
- Energy Research at DOE: Was It Worth It? Energy Efficiency and Fossil Energy Research 1978 to 2000 (2001)
- Novel Approaches to Carbon Management: Separation, Capture, Sequestration, and Conversion to Useful Products-Workshop Report (2003)