2. • Hydrogen is now seen as the best solution to solve the problem of environmental
emissions.
• Hydrogen has the potential to provide energy in transportation, heat distribution,
power generation, and energy storage systems with little or no impact on the
environment.
3. • Hydrogen is the most common chemical element in the universe; its atoms are
included in the composition of water and fossil fuels such as coal, oil, and natural
gas.
• Hydrogen extraction is either from molecules containing hydrogen and carbon such
as methane.
• Also from water by separating hydrogen from oxygen with the help of electricity in
what is known as electrolysis.
4. • Most of this electricity comes not from clean energy sources,
but low-carbon energy sources:
dams.
geothermal energy.
wind turbines.
solar energy.
marine energy.
nuclear energy .
• However; the goal is to produce hydrogen ''green'' without producing harmful and
polluting gases.
5. Problems and difficulties of using hydrogen
• Storage:
Hydrogen is the lightest gas ever, as one liter of it weighs at normal pressure and
temperature only 90 milligrams, and a kilogram of it occupies only 11 cubic meters.
We can store hydrogen because we know how to change its density in different ways
with pressure, but the process of storing hydrogen in turn uses a lot of energy.
The hydrogen liquefaction process is more complex, as it requires more energy
consumption and a lower temperature (-253°C).
6. Future of using hydrogen
• The production of green hydrogen projects globally exceeded 60 gigawatts in
2020, equivalent to the production of about 187.5 million solar cells and 25,000
wind turbines which is enough to light 6.6 billion LED lights.
• A report issued by Strategy & Middle East expects that the global market for
green hydrogen export will reach $300 billion by 2050, providing about 400,000
jobs in the renewable energy sector in the world.
• The global demand for green hydrogen is expecting to reach about 530 million
metric tons by 2050, to replace the use of about 10.4 billion barrels of oil.
