This is the best summary I could come up with:

But the potential environmental benefits are still hard to measure, and depend a lot on how policymakers and companies like Amazon shape the supply chain for hydrogen.

Hydrogen produces water vapor instead of greenhouse gas emissions during combustion, a trait that’s made it more attractive to companies and governments working to meet climate goals.

The Biden administration is trying to change that through tax incentives and billions of dollars in federal funding for clean hydrogen production hubs.

The electrolyzer is plugged into the power grid, and fossil fuels still make up about 60 percent of the US electricity mix.

The company is looking into pairing it with renewable energy generated on site, but doesn’t have a concrete timeline for when that might happen, according to Jafry.

It also made a commitment in 2019 to reach net zero greenhouse gas emissions by 2040, although the company’s most recent sustainability report shows that its carbon footprint has actually grown by about 39 percent since then.

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