Span.IO
SPAN (formerly Span.IO) is a San Francisco-based clean energy hardware and software company that has fundamentally reinvented the home electrical panel - a technology largely unchanged for over 100 years. The SPAN Panel replaces the traditional breaker box with an intelligent, connected device that provides circuit-level visibility, real-time energy monitoring, and remote control through a companion mobile app. Homeowners can monitor and manage every circuit in their home, set priorities for backup power during outages, and seamlessly integrate solar panels, home battery storage, EV chargers, heat pumps, and other electrification upgrades - all from a single dashboard.
SPAN's technology sits at the nerve center of the modern electrified home, acting as the intelligent hub that ties together distributed energy resources. The SPAN Home App delivers a 360° view of home energy performance, provides AI-driven energy insights, and enables users to make real-time adjustments to reduce electricity costs. The company has also launched SPAN Drive (a smart EV charging solution), SPAN Edge (a utility-facing product enabling demand flexibility programs, as demonstrated with PG&E), and most recently XFRA, a distributed data center solution targeting AI compute demand. SPAN has partnerships with major industry players including Tesla, Carrier, Eaton, and Kenmore, and has been recognized as a top startup employer by Forbes.
SPAN is a critical enabler of the US energy transition. As millions of American homes adopt solar, batteries, and EVs, the legacy electrical panel becomes a bottleneck - SPAN solves this by making home electrification faster, cheaper, and smarter. By enabling demand flexibility and virtual power plant participation, SPAN also helps utilities unlock underused grid capacity, directly supporting a more resilient and distributed US energy supply chain. The company's mission is to electrify 10 million homes by 2030 and plays a key role in realizing the decarbonization goals of the Inflation Reduction Act.
Funding
SPAN has raised multiple venture funding rounds. Known backers include Elemental Excelerator. Total funding amount and specific round details were not publicly confirmed during research, but the company is venture-backed and has raised significant capital to support hardware manufacturing, R&D, and commercialization. Series A and Series B rounds are believed to have occurred between 2019-2022.
Investors
- Elemental Excelerator
- ArcTern Ventures
- Fifth Wall
- Congruent Ventures
Key People
- Arch Levy, CEO & Co-Founder
News
- SPAN Announces XFRA, a Distributed Data Center Solution to Close the Speed-to-Power Gap for AI Compute Demand
- SPAN, Carrier, Tesla and Others Launch Campaign to Lower Electricity Costs by Unlocking Underused Grid Capacity
- Announcing our Collaboration with Eaton
- PG&E Accelerating Home Electrification for Customers via SPAN Edge
- Introducing SPAN API and SPAN Home On-premise (Public Beta)