If data is the new oil, is Hydrogen the new gas? | ORF
In late June this year, Reliance Industries announced a US $10 billion investment for the production and use of hydrogen (H2). H2 is a colourless gas physically. But in the race to Net Zero Carbon, it comes in multiple colours, each representing a specific process.
The many colors of H2
Grey is the cheapest at US $1 to 1.5 per kg (2020) but the least green, because H2 is stripped out of natural gas (CH4) with carbon dioxide emissions. Blue H2 is cleaner. The CO2 is captured and stored, albeit not permanently and costs US $4.55 per kg (2020). Turquoise H2 transforms the carbon into solid form. But technical issues persist. Red H2 is separated from water using nuclear power—post-Fukushima, a safety stigmatised fuel. The most promising is zero carbon Green H2. Renewable energy separates hydrogen from water through electrolysis. Current costs are US $6 per kg of H2, which industry estimates will reduce to US $2.5 by 2030.
Good explainer on the different types of hydrogen.