Green hydrogen is hydrogen gas produced using renewable electricity—typically from wind, solar, or hydropower—to split water (H₂O) into hydrogen (H₂) and oxygen (O₂) via a process called electrolysis. It’s called “green” because the entire process emits zero carbon.

Why Make Hydrogen at All?

Hydrogen is a powerful, clean-burning fuel. When used in a fuel cell, it produces electricity, heat, and only water as a byproduct—no carbon emissions. That makes it a promising alternative for sectors that are hard to electrify directly, like:

• Long-haul trucking

• Aviation

• Heavy industry (like steel and cement)

• Grid storage

How Is Most Hydrogen Made Today?

Not green, unfortunately. About 95% of global hydrogen today is made from natural gas via a method called steam methane reforming, which emits large amounts of CO₂. This is called “gray hydrogen.” Add carbon capture, and it becomes “blue hydrogen”—still controversial due to leaks and inefficiencies.

Why Does Green Hydrogen Matter?

Green hydrogen has the potential to:

• Decarbonize heavy industry

• Balance renewable grids by storing excess solar/wind power

• Create new clean fuel markets for shipping, aviation, and more

It’s still early—green hydrogen is more expensive than fossil-based versions—but prices are dropping fast as technology scales and climate policy tightens.

In Short:

Green hydrogen is clean energy’s molecular workhorse—small, versatile, and (if produced right) planet-friendly. It could play a big role in a post-carbon economy. And as today’s article shows, building a transparent, public marketplace for it is a big step toward making that real. ◊