Article written by Eitan Mike Miller
Eitan’s major field of interest is off-grid solar systems design, along with water filtration & extraction, he worked in Siemens CSP (formally Solel), and Israel Water Authority. |

What is ‘green Hydrogen energy’?

Hydrogen energy is another way of storing electrical energy for long-term use as a hydrogen fuel cell, like chemical battery solutions or fossil fuels but with a more advanced ecological approach.

Non-CO₂-emitting Hydrogen electricity poses an alternative for batteries and fossil fuels as means of energy when no renewable energy exists.

This green Hydrogen can be generated by solar panels or other renewable energy sources and used on-demand to provide adequate, reliable energy that would otherwise be lost or reduced owing to electrical losses or a lack of available energy storage capabilities.

Hydrogen energy can be used to power DC motors, AC-DC inverters, turbines, power plants, hydrogen cell engines, hydrogen cars ‘FCEV’ (using a hydrogen fuel cell stack with or without batteries) for industrial and off-grid applications.

Green Hydrogen advantages:

The advantages of hydrogen storage-based electricity over traditional chemical or mechanical-based energy storage technologies include their ability to provide vast volumes of clean and very dense energy without the complication of space, maintenance, and money that conventional high-capacity energy storage demands.

Additionally, it is ‘greener’ and more robust in the maintenance cost, environmental impact, and storage requirements (it can be placed underground in sealed containers).

On the other hand, traditional energy storage is poor and ineffective; Battery production consumes rare, vital minerals, alongside to ample physical space it requires; also, there’s a constant deterioration in performance over time and has a short service life, with expensive recycling operations.

In the case of renewable energy sources, ‘Green Hydrogen’ might be used as energy storage to buffer electrical gaps when high demand is needed, but renewable energy sources aren’t sufficient for the loads (night for solar, summer for wind turbines), or as a backup for micro-grid power plants that experience grid-tied shutdowns or poor supply.

How does ‘green Hydrogen’ work?

In the electrolysis process, water separated [‘H2O’] into its bare atoms, Hydrogen & Oxygen, by a 2 / 1 to Hydrogen ratio.

An Electrolyzer’s initiated WAelectrolysis process applies an electrical charge to Cathode and Anode with a special membrane (that filters the movement of O2).

In this process, Hydrogen is used negative charge, and Oxygen is positively charged.

The process results in pure Hydrogen gas, whereas the Oxygen by-product is released into the atmosphere or captured for another use.

The amount of Hydrogen production is diverse by the power applied to the relative volume of water, its conductivity level, and the current passing through it.

The device processes this separation stage called ‘water electrolyzing.’

General facts:

Hydrogen is a highly flammable gas only with above 4% oxygen within it.

It can be stored and transported in gas or liquid form, and be used for energy production without a further process with a fuel cell engine or the most gas turbines.

Green Hydrogen Applications

Green Hydrogen Advantages

Green hydrogen Disadvantages