Last month, the EU set out a renewable hydrogen strategy, sketching a roadmap for how the world’s largest trading bloc intends to develop hydrogen production and usage through 2050.
The categories of hydrogen production are often split by color: brown, gray, blue and green. The dirtiest—brown and gray hydrogen, captured from coal and natural gas—create the most emissions and yet are the most widespread forms of hydrogen production, responsible for up to 95% of the H2 produced worldwide.
In the long-term, blue hydrogen is seen as an intermediate step towards the cleanest form of H2. Green hydrogen can be produced by separating hydrogen from water via electrolysis, though other technologies are emerging. When the electricity used to perform the process comes from renewable sources, green hydrogen becomes truly zero carbon.
Read the article is Forbes.