One way to make clean hydrogen is with electrolyzers that split hydrogen from water. Right now that’s expensive, but with a spurt of new investment, electrolyzer costs will likely tumble. Other methods will compete as well.
Central to the European plan for cutting dependence on natural gas is investment in hydrogen and other alternatives to conventional gas — something that companies are lining up to do with their own capital. Privately backed projects are exploring how to link hydrogen production to renewable electric power generators — a key innovation because hydrogen is easier to store than electricity and could help make electric grids reliable even when they depend on large amounts of intermittent wind and solar.
Leaders in sectors such as steel, refining and chemicals all see hydrogen investments as part of their plans to remain viable in a world that slashes emissions. Maersk, one of the world’s largest container shipping companies, is backing some of these projects — along with several other clean fuels. Even in aircraft and heavy trucks, hydrogen may prove the best way to cut emissions.
The consulting firm McKinsey estimates that the value of investment in clean hydrogen projects by 2030 will exceed half a trillion dollars, based on the announcements made — with Europe in the lead. For comparison, the total value of all fossil fuels sold globally in 2021 was about $5 trillion.
The United States is finding it harder to be a clean technology leader because the political environment is fractured. But one area of promise is $8 billion for “hydrogen hubs” in the recent bipartisan infrastructure law to build the production facilities, pipelines and terminals to link producers and consumers.
A hydrogen revolution could take a while — perhaps two decades with a highly committed effort, until there are substantial volumes of hydrogen replacing conventional natural gas and also replacing oil. But beyond hydrogen there are many other examples of credible policy, along with new technology attracting a flood of capital. New designs for nuclear plants attracted $3.4 billion in private capital in 2021 alone. (New nuclear plants are likely to focus on America, Britain, China and other markets. Attitudes around nuclear power in most of continental Europe are yet to turn reliably in favor.) Other, more mature clean technologies like solar, wind and batteries are expanding massively as well.