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2026 NEC changes for EV chargers, heat pumps and new loads

Updated 2026-11-03 · What the 2026 NEC changed for existing-home load calculations: Article 120, 2 VA per sq ft, new-load demand factors, EVSE at 80%, power control systems, and which states use it.

The 2026 NEC moved the load calculation rules out of Article 220 into a new Article 120. Section numbers changed (220.83 became 120.83), and the existing-dwelling method was rewritten.

Key changes, in plain language

  • 2 VA per sq ft for general lighting in dwellings, down from 3.
  • One existing-dwelling table. The (A)/(B) split is gone. Existing loads: 8 kVA at 100%, remainder at 40%. New EVSE: 80%. New central resistance heat: 80%. All other new loads: 50%.
  • EVSE value (120.57): nameplate, with 7,200 VA used when no nameplate is available (summary from The Power Estimator: NEC 2023 vs 2026 load calculation methodology).
  • Power control systems (120.7): a path for counting loads that are limited by a listed control system.
Verification note: the 2026 demand factors above are consistent across several secondary summaries (Intrysys: NEC 2026 changes from NEC 2023; Electrical License Renewal: 120.83 Existing Dwelling Units (2026 summary); NEC Mastery: NEC 220.83 explained, with the 2026 changes), but we have not checked them against the printed NFPA 70-2026 text. Read the section in the edition your area enforces; NFPA offers free read-only access (NFPA 70 (National Electrical Code) free read-only access).

Which states use 2026?

NFPA's map (as of August 3, 2026) lists the 2026 NEC in effect in six states, including Colorado, Maine, Massachusetts and Minnesota, and the 2023 edition in 20 states. Others are on 2020 or older editions, and several states leave adoption to cities. See which NEC edition applies.

Compare 2023 vs 2026 on your house →

Common questions

Is the 2026 NEC in effect in my state?

Possibly. As of NFPA's August 3, 2026 update, six states had the 2026 NEC in effect and more were in process. Check NFPA's enforcement map and your local building department.

Does 2026 make EV chargers easier to add?

It depends. Lighting drops to 2 VA per sq ft, which helps, but a new EVSE counts at 80% instead of falling into the 40% remainder, so some homes calculate higher.

Estimate only; a licensed electrician and your local authority having jurisdiction decide; not an engineering stamp.

Sources

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