Since hydrogen does not exist freely in nature, it must be produced from other sources. There are many sources of hydrogen and many methods to produce hydrogen based on these sources, and a spectrum of colors has been adopted to classify hydrogen fuel based on source.
Currently the most widely used, gray hydrogen is produced through natural-gas-fueled steam and stream-methane reforming. Unfortunately, these processes produce greenhouse gas (GHG) emissions. However, when gray hydrogen is combined with carbon capture use and sequestration technologies, the carbon footprint is vastly reduced and the resulting hydrogen is considered blue hydrogen. Separately, there are promising opportunities around green hydrogen, which is produced using renewable energy (e.g., solar, wind) in the electrolysis of water (H20) (i.e.., separating hydrogen (H2) from oxygen (O)). Additionally, there are encouraging opportunities from pink, red and purple hydrogen production processes, which leverage nuclear energy (electrical and thermal) to produce hydrogen by incorporating the hydrogen production processes into the existing energy facilities and thus generating net-zero GHG emissions in the production processes. The energy industry continues to explore and innovate to produce hydrogen at scale while producing net-zero emissions.
There are currently approximately 70 hydrogen production facilities in the US. These facilities are in and around industrial hubs and offer great opportunity for new hydrogen investments to leverage existing infrastructure. Most hydrogen production in the US occurs in California, Texas and Louisiana. Several states across the Midwest, the Illinois Basin and the Rocky Mountains are emerging as hydrogen hub key players, with strong demand across several industries.
Of the approximately 11.4 million metric tons (MMT) of hydrogen produced annually in the US, 95% of it serves as feedstock and heating in industrial-intensive activities, such as refining, petrochemicals, ammonia, iron and steel, cement, and oil and gas. It is also used in the transportation sector, primarily in California where its use can be attributed to policy and financial incentives cultivating demand for fuel cell vehicles.
With the planned shift toward a low-carbon economy by 2030, the demand for hydrogen is expected to reach 14 MMT annually.² It is further expected that hydrogen demand will be driven by anchor industries, such as refining and chemical or industrial manufacturing, followed by the transportation sector. To a smaller extend, hydrogen also has an opportunity in the electricity and power sector.
Use of hydrogen in these sectors is notable and extends the opportunities because more than 75% of the total US GHG emissions come from the country’s transportation, electricity production and industrials (e.g., energy, production of goods from raw materials) sectors (EIA source; 2020). Clearly, hydrogen can be leveraged to accelerate the emissions-reduction agenda in these sectors.