What it is

Span secured $75M from Eaton to scale smart electrical panels that enable home electrification without expensive panel or utility service upgrades. The devices use active load management to keep EV chargers, heat pumps, and appliances within existing electrical service limits, addressing a key bottleneck for residential electrification.

Why it matters

Many existing residential panels lack capacity for EV chargers and heat pumps, forcing costly panel replacements ($1,000-$2,500) or utility service upgrades (tens of thousands). Electrical contractors and homeowners face a trade-off: higher upfront smart panel costs ($3,500) versus expensive infrastructure upgrades. Active load management shifts the design constraint from physical service capacity to intelligent throttling, changing upgrade vs. replace decisions.

Evidence from source:

  • Span’s smart panel retails for ~$3,500 vs. $1,000-$2,500 all-in cost for traditional panel installation
  • Smart panels ‘actively shift and throttle appliances—like EV chargers and clothes dryers—to keep loads within safe limits, saving tens of thousands of dollars per home’
  • Eaton’s AbleEdge digital circuit breakers already used in Tesla and Lunar Energy control systems; partnership targets multifamily buildings and small commercial properties

Open questions

  • What NEC or utility interconnection barriers remain for load-managed circuits replacing service upgrades?
  • How do AHJs handle code compliance for dynamic load management vs. traditional demand calculations?