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  • Hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements.
  • The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus.
  • Under ordinary conditions, hydrogen gas is a loose aggregation of hydrogen molecules, each consisting of a pair of atoms, a diatomic molecule, H2.
  • The earliest known important chemical property of hydrogen is that it burns with oxygen to form water, H2O indeed, the name hydrogen is derived from Greek words meaning maker of water.
  • Hydrogen is one of the most abundant elements on earth for a cleaner alternative fuel option.
  • Green hydrogen is produced by electrolysis of water using renewable energy (like Solar, Wind) and has a lower carbon footprint.
  • Brown hydrogen is produced using coal where the emissions are released to the air.
  • Grey hydrogen is produced from natural gas where the associated emissions are released to the air.
  • lue hydrogen is produced from natural gas, where the emissions are captured using carbon capture and storage.

Uses of Hydrogen

  • Hydrogen is an energy carrier, not an energy source and can deliver or store a tremendous amount of energy.
  • It can be used in fuel cells to generate electricity, or power and heat.
  • Hydrogen is most commonly used in petroleum refining and fertilizer production, while transportation and utilities are emerging markets.
  • Hydrogen and fuel cells can provide energy for use in diverse applications, including distributed or combined-heat-and-power; backup power; systems for storing and enabling renewable energy; portable power etc.
  • Due to their high efficiency and zero-or near zero-emissions operation, hydrogen and fuel cells have the potential to reduce greenhouse gas emission in many applications.