Construction & emissions · NEWS BRIEF

Google backs cleaner steel through certificates for future production

By Grid & Silicon · Published September 22, 2026
Source: Google announcement · September 17, 2026

What happened

Google has agreed to buy environmental certificates tied to as much as 91,000 metric tons of steel from Stegra’s first production year. The September 17 announcement supports a plant being built in Boden, Sweden, and addresses construction emissions associated with infrastructure such as data centers.

What the money supports

Google says the plant will use renewable electricity to produce hydrogen, which replaces coal in processing iron ore. Stegra estimates emissions could be up to 95% lower than conventional blast-furnace production. This is the producer’s estimate for a manufacturing process, not a measured reduction in Google’s entire data-center footprint.

The agreement concerns future production. It does not establish that the plant has completed construction or that these volumes have already been produced. Neither announcement gives the agreement’s price.

How the certificates work

Stegra’s accompanying announcement explains that the environmental attributes are sold separately from the physical steel, using a system called book and claim. A customer can support cleaner production even when geography or its supply chain prevents it from buying that metal directly. The physical buyer receives steel without the associated environmental claim.

Stegra applies this mechanism to non-prime steel, which makes up a larger share of output while a new mill ramps up. It says this material uses the same hydrogen and renewable-electricity process as the rest of its production. The company requires buyers of the physical steel to forgo green claims, intended to prevent two buyers from claiming the same emissions benefit.

What to watch next

Stegra says the certificate revenue supports its early operating years. Future evidence to look for includes actual production, certificates issued against it and how the promised separation of claims is documented. Purchasing certificates alone does not show that this steel has been delivered to a Google campus.

Understand the infrastructure

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