The mechanism. On June 18, 2026, FERC issued show cause orders to every jurisdictional grid operator — PJM, MISO, SPP, ISO-NE, NYISO, and the rest — under Docket RM26-4, giving each 60 days to either justify its existing interconnection tariff or rewrite it to handle "large loads." That's regulator-speak for data centers. PJM alone expects to host 70% of new U.S. data center demand and is projecting 30 gigawatts of incremental load by 2030. The reform menu FERC laid out — faster transmission-study processes, co-location and behind-the-meter rules, new flexible-load tariffs — isn't a spending bill. It's a set of procedural unlocks that let hyperscalers actually get power to sites already permitted and under construction. Layered on top, the 2026 National Electrical Code cycle and the newly revised UL 9540A large-scale fire test (6th edition, March 2026) are rewriting the switchgear, medium-voltage distribution, and battery/ESS safety specs that every gigawatt-scale campus must meet before it can energize. Both levers point at the same chokepoint: the electrical gear standing between the grid and the rack, not the poured concrete around it.
Eaton's Real Policy Trade Isn't Infrastructure Spending — It's Data Center Power Codes
FERC's large-load interconnection rulemaking and the updated electrical/fire codes governing AI data-center power gear are a narrower, less-crowded lever on Eaton than the generic "grid modernization" story Wall Street keeps telling.
| Ticker | Company | 1-year change |
|---|---|---|
| ETN | Eaton | +11.7% |
| PWR | Quanta Services | +65.6% |
| NUE | Nucor | +63.9% |
| CAT | Caterpillar | +101.8% |
Both levers point at the same chokepoint: the electrical gear standing between the grid and the rack, not the poured concrete around it.
Who cashes in:
- Eaton ETN — the direct beneficiary. Electrical Americas backlog is up 48% year-over-year with data center orders in that segment accelerating 240% in Q1 2026; total company backlog hit a record $19.6 billion. Every interconnection-queue fix and every updated switchgear/ESS code requirement pushes utilities and hyperscalers toward Eaton's transformers, breakers, and medium-voltage switchgear — the exact bottleneck FERC's reform is trying to unstick.
- Quanta Services PWR — the contractor of record for utility-side interconnection upgrades. When FERC forces PJM and MISO transmission owners to rewrite study processes and build new substation and feeder capacity for large loads, Quanta's electric-power infrastructure segment is who utilities call to build it.
- Nucor NUE — a secondary beneficiary through electrical steel and structural products feeding transformer and substation build-outs tied to interconnection expansion, distinct from its generic "data center construction" exposure.
Who is exposed:
- Caterpillar CAT — the "grid modernization" narrative has lumped in backup-generation demand, but if interconnection reform actually succeeds at getting grid power to sites faster, the bridge-power/behind-the-meter generator thesis (Cat's near-term data center tailwind) gets partially undercut. Faster grid access is a substitute for, not a complement to, on-site diesel and gas gensets.
- Fluor FLR and Jacobs J — both are engineering-procurement-construction names riding the generic data-center capex wave, but neither has meaningful proprietary exposure to the specific switchgear/interconnection chokepoint. If FERC's reform frees up queue capacity faster than expected, some campuses proceed on compressed timelines that favor equipment suppliers with backlog (Eaton) over EPC firms competing on commodity construction margins.
The play. Track the RM26-4 tariff filings due back from PJM, MISO, and the other RTOs in the 60-day window following the June show cause orders — the actual reform text, not the topline FERC press release, will show which of the five reform categories (co-location, cost allocation, flexible load service) becomes binding first. Watch Eaton's quarterly backlog-to-book ratio and Nebraska switchgear capacity commentary as the real-time read on whether code and queue reform is translating into shipped equipment or stuck orders.
Information, not investment advice.
Source: original report ↗
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