In a recent post on his blog GatesNotes, Bill Gates calls hydrogen the Swiss Army Knife of decarbonization. While noting that we have a variety of options to reduce greenhouse gas emissions from common uses of energy such as electricity and passenger vehicles, Mr. Gates explains that this still leaves two thirds of global GHG emissions (35 gigatons per year) to address by mid-century. Much of these emissions come from difficult-to-abate sectors like industry and heavy-duty transport or shipping. Electrification is often not an option in such sectors, like cement manufacturing, steel production, and heavy duty vehicles, due to operational requirements or the need for high-grade fuel and heat in chemical processes. This is where hydrogen can come in to play.

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