Step 2

We produce green hydrogen

Creating a fossil-free molecule using renewable electricity
Back to the Green Cycle
2. Green Hydrogen

Green hydrogen can get us to net zero

We use green hydrogen to store energy from the sun and wind. In step two of the Green Cycle, we use renewable electricity to power a process called electrolysis which splits water into hydrogen and oxygen. No greenhouse gases are released.
Converting electricity into green hydrogen molecules allows us to carry large amounts of energy, but the world still lacks developed infrastructure for hydrogen, making it hard to store and transport for now. That is why we combine our green hydrogen with CO2 to make electric natural gas (e-NG), our green alternative to fossil molecules. In this form, it can be easily shipped and deployed around the world.

We cannot achieve our climate goals without green hydrogen. TES has developed the most efficient and scalable way to produce it, store it and supply it to the world: e-NG.

How does electrolysis work?

We put electrodes which are connected to a renewable power source into demineralized water and apply a direct current. The electrodes attract ions with an opposite charge which causes the H2O to separate into hydrogen and oxygen. We capture the hydrogen and allow the oxygen to escape into the air. This harmless oxygen is the only emission released from this process.


What is the difference between green, blue, gray, black and pink hydrogen?
Green hydrogen is produced using renewable electricity. It is the only type of hydrogen that is emission-free.
Blue hydrogen is produced from natural gas and carbon emissions are captured and stored underground. While it is considered a low-emission form of hydrogen, it is still dependent on fossil fuels.
Gray hydrogen is produced from natural gas or methane, but its emissions are not captured. This is currently the most common form of hydrogen in widespread use.
Black or brown hydrogen is produced from coal. It releases high levels of emissions and is the most polluting type of hydrogen on the market.
Pink (or red or purple) hydrogen is produced through electrolysis powered by nuclear energy.
Can green hydrogen really replace fossil molecules?
When we combine green hydrogen with CO₂ to create e-NG, it can be used for many purposes that traditionally use fossil molecules. Green hydrogen and e-NG can be used to decarbonize mobility, heavy industry, long-haul shipping and logistics and, perhaps most crucially, our global energy system.
Could Europe not produce the green hydrogen it needs by itself?
Europe is is committed to decarbonizing power production and growing the share of renewables. Today, to meet the short-term climate targets that Europe has set, it is most efficient to use locally-produced renewable electricity directly to decarbonize use cases and processes that can be electrified, and at the same time, imports of green hydrogen will contribute to achieving these targets in time.

Next step: making e-NG

Converting renewable electricity into green molecules is crucial to the Green Cycle. In step three we will show you how we use them to create our key product: e-NG