Energy security is the association between national security and the availability of natural resources for energy consumption.
National security is a concept that a government, along with its parliaments, should protect the state and its citizens against all kind of "national" crises through a variety of power projections, such as political power, diplomacy, economic power, military might, and so on.
In physics, energy is a property of objects which can be transferred to other objects or converted into different forms.
Special Report - Quest for Energy Security by Rajya Sabha TV
Access to cheap energy has become essential to the functioning of modern economies.
America's Energy Security by The Obama White House
However, the uneven distribution of energy supplies among countries has led to significant vulnerabilities.
Energy supply is the delivery of fuels or transformed fuels to point of consumption.
Renewable resources and significant opportunities for energy efficiency exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.
Rapid deployment of renewable energy and energy efficiency, and technological diversification of energy sources, would result in significant energy security and economic benefits.
Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.