Energy security broadly means continuous availability of energy in varied forms in sufficient quantities at reasonable prices. India can be said to be energy secure when all our citizens, irrespective of their ability to pay, are ensured lifeline energy and well as their effective demand for safe and convenient energy to support economic growth are met at competitive prices all the time with a desired confidence level considering shocks and disruptions that can be reasonably expected.
This definition stems from the fact that growth cannot be inclusive and sustainable unless all citizens have access to safe and convenient energy for their basic needs because traditional fuels such as wood or dung cakes cause indoor air pollution and lead to adverse impact on health, particularly that of women and
children. Energy demand is a  function of multiple variables such as accessibility, affordability and usability. The price of energy and people’s ability to pay, play an important role in expected levels of consumption. Energy is required in different forms such as heat and light. Different fuels can be substituted by each other. However, such substitution often involves cost or loss in the quality of service. Further, interruptions in energy availability lead to increased cost in an industry.