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EVA / Ethylene Vinyl Acetate: It is useful as the covering or encapsulation material for silicon cells in the manufacture of photovoltaic modules. EVA is transparent, durable, and anti-corrosive and resists UV radiation.

Electric Current: The flow of electric charge through a medium (wire), measured in Amperes.

Electric circuit: It is the path of flow of electrons from the source of current or voltage to a designated line of electrical devices, before returning to the source of origin.

Electrical grid: It is an interconnected network to supply the electricity from the supplier source to the consumers, covering a wide region.

Electrolyte: It is a liquefied component, which conducts electricity. Sulphuric acid or H2SO4 is generally in use in batteries. However, common seawater is a very good electrolyte, and you can generate small amount of electricity by immersing a steel and zinc plate in it.

Energy: It is the definition of the ability in performing tasks or work. There is transformation of stored or potential energy into work or kinetic energy, when it is in use.

Energy density: It is the amount of useful or extractable energy stored in a given system or space per unit volume. The unit of measure is joule per cubic meter = J/mﾳ or kg/m sﾲ

Energy payback time: Refers to the period taken up by any energy- generating device to produce the same amount of energy that was essential in its production. This time slot for photovoltaic panels is around 16 to 20 months.