Some of the most consequential rules in the battery business are written in documents nobody reads. On June 12, 2026, the Pipeline and Hazardous Materials Safety Administration — PHMSA, part of the Transportation Department — published Federal Register document 2026-11798, titled simply Hazardous Materials: Notice of Actions on Special Permits. The notice states its purpose plainly: in accordance with the procedures governing applications for special permits under the Department's Hazardous Material Regulations, the Office of Hazardous Materials Safety has granted or denied the applications described. That single sentence sits over the machinery that decides how lithium batteries are allowed to move across the country and the world.
This is not a battery-specific docket. PHMSA's special-permit process covers the entire universe of regulated hazardous materials — flammable liquids, compressed gases, explosives, radioactive material, and more. But lithium cells and battery packs are squarely within that universe. They are classified as hazardous materials precisely because, under the wrong conditions, they can short, vent, overheat, and ignite. Everything about how a storage company packages, labels, and ships its product traces back to the federal Hazardous Materials Regulations, the HMR — and the special-permit process is how exceptions to those baseline rules get authorized.
What a special permit actually is
The HMR set the default, one-size-fits-most rules for transporting dangerous goods: packaging standards, quantity limits, marking and labeling, documentation, and mode-specific constraints for highway, rail, air, and vessel. A special permit is a formal, time-limited authorization to deviate from a specific provision of the HMR, granted only when the applicant demonstrates an equivalent level of safety. In other words, a company can ask PHMSA: the rule says X, but here is why our alternative achieves the same safety outcome — may we do Y instead? PHMSA evaluates the request and either grants the permit, often with conditions, or denies it.
The notice published on June 12 is the public record of those decisions over a given period — a ledger of which applications were granted and which were denied. It does not rewrite the HMR. It documents the case-by-case exceptions layered on top of the baseline. For an industry whose products are evolving faster than the underlying regulations, that case-by-case layer is where a great deal of the real-world rulebook lives.
Why this matters specifically for batteries
Consider how often the battery industry runs into the edges of rules written for an earlier era. A company may need to ship prototype cells of a new chemistry that does not fit neatly into existing packaging categories. A recycler may need to transport damaged, defective, or recalled batteries — a notoriously hazardous category — under conditions the standard rules do not contemplate. A manufacturer may want to move larger packs, or use an alternative packaging design, or ship by a mode the default rules restrict for a given quantity. Each of those situations is a candidate for a special permit, and each grant or denial in a PHMSA notice quietly sets a precedent for how that kind of movement is handled.
The economic stakes are real even if they are invisible in any single line item. Transport and logistics are part of the delivered cost of every battery system, and the rules governing damaged or recalled cells are a direct input to the cost of recalls and end-of-life recycling — two fast-growing liabilities as the installed base of EV and storage batteries ages. When a recall hits, defective packs have to be moved from owners and dealers to processing sites, and how that movement is permitted determines how expensive and how fast it is. The special-permit docket is upstream of all of that.
How to read the notice responsibly
The discipline here matters. This particular notice announces that actions were taken on special-permit applications; it is the formal vehicle by which PHMSA makes those grants and denials public. The right way to use it is as a pointer into the special-permit system — a signal that decisions affecting hazardous-materials transport, including lithium batteries, have been made and recorded — rather than as a source for claims about any specific permit number, applicant, or condition that is not stated. We will not invent particulars the notice does not contain. The value of the document is structural: it shows that the rulebook for moving batteries is being continuously adjusted through a defined, auditable process.
It also helps to understand where special permits sit relative to the rest of the system. A special permit is the narrowest of three tiers. At the base are the Hazardous Materials Regulations themselves, the binding default rules that apply to everyone. Above those, PHMSA can issue broader rulemakings that change the HMR for all shippers. And at the most granular level are special permits and approvals, which authorize a specific applicant to do a specific thing differently, on the condition that safety is preserved. The special-permit tier is where the system absorbs the friction of a fast-moving industry without rewriting the whole rulebook every time a new battery format appears. When a particular kind of permit is granted often enough, it can eventually inform a future change to the HMR itself — which is one reason the special-permit record is worth watching as a leading indicator of where battery-transport rules are heading.
The bigger picture
For all the attention paid to cell chemistry and gigafactory capex, the ability to legally and safely move batteries is a precondition for the entire industry, and it is governed by exactly this kind of unglamorous federal process. As new chemistries reach commercial scale, as the recycling and second-life markets grow, and as the recalled-battery problem expands with the aging fleet, the volume and importance of battery-related special permits will only rise. Each PHMSA notice of actions on special permits is a snapshot of that evolving framework.
The takeaway for anyone tracking the storage business: do not let the dryness of the title fool you. The Hazardous Materials Regulations and the special permits that bend them are the operating system for getting cells from a factory to a project site, and for getting defective cells safely back out again. PHMSA's June 12 notice is one more entry in that ledger — and the ledger, not the press release, is where the real shipping rules for batteries are written.