SPAN logo

SPAN

Leader

SPAN makes smart electrical panels that integrate with solar, batteries, and EVs; raised $474M total; Eaton invested $75M in 2026; first panels certified to the new UL 3141 standard required by the 2026 NEC.

Best for: Smart Home Energy ManagementMarket leader
Climate & EnergySmart Home Energy ManagementWebsiteUpdated May 2026

Company Overview

About SPAN

SPAN is a San Francisco-based company that designs and manufactures smart electrical panels for residential and commercial applications. Founded in 2018 by ex-Tesla engineers, SPAN''s flagship product — the SPAN Panel — is an intelligent circuit breaker panel that replaces traditional electrical panels with a connected, software-controlled system. The SPAN Panel enables homeowners to monitor energy consumption by circuit in real time, set automated load priorities during grid outages, optimize solar and battery charging, and manage EV charging — all through a mobile app. Each circuit can be individually controlled via software, providing unprecedented visibility and control over home energy flows.

Business Model & Competitive Advantage

SPAN has raised $474 million in total funding. In March 2026, Eaton — one of the world''s largest electrical equipment manufacturers — invested $75 million in SPAN and established a strategic partnership to co-develop integrated home energy management solutions expected to reach market in Q2 2026. SPAN''s panels were also certified to the new UL 3141 Power Control System standard — becoming the first smart panels to receive this certification — which is now required under the 2026 National Electrical Code (NEC), creating a significant regulatory tailwind for adoption.

Competitive Landscape 2025–2026

SPAN has expanded its product line to six panel models addressing different home sizes and configurations. Its SPAN Edge product, launched in 2025, is sold directly to grid operators as a managed distributed energy resource (DER) solution, enabling utilities to orchestrate residential loads at scale for grid balancing. This dual-channel strategy — serving homeowners directly and utilities through SPAN Edge — positions SPAN as critical infrastructure for the residential energy transition.

Founded
2018
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Key Differentiators

Market Leader

SPAN is recognized as a market leader in the Climate & Energy sector, demonstrating strong industry presence and customer trust.

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