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Overview
Span makes a smart electrical panel that serves as a centralized home energy hub. The SPAN Panel replaces a traditional breaker box and is controlled through the SPAN Home App, letting you monitor and manage every circuit in real time, while integrating with solar, home batteries, and EV chargers. It includes circuit-level control and outage-mode optimization that prioritizes essential loads to extend battery life by about 40%. The goal is to help homeowners save on energy costs, increase resilience during outages, and enable easier adoption of home electrification without costly utility upgrades.
About Span
Industries
Hardware
Energy
Consumer Software
Company Size
1-10
Company Stage
N/A
Total Funding
N/A
Headquarters
San Francisco, California
Founded
2023
Simplify's Take
What believers are saying
- 225-amp rating supports larger solar arrays without system upgrades.
- Extends battery life 40% during outages by prioritizing essential circuits.
- Partners with Sunrun for bundled solar, battery, and expert installations.
What critics are saying
- Tesla Powerwall 3 bundles circuit control, undercutting SPAN's $3,500 sales.
- Sunrun builds proprietary panels, capturing SPAN's installer revenue by 2026.
- App glitches and integration failures erode trust after 2.5 years of use.
What makes Span unique
- SPAN Panel replaces traditional panels with circuit-level control via SPAN Home App.
- PowerUp technology enables EV chargers and appliances without utility upgrades.
- UL 1741 PCS certification ensures safety for solar and battery integrations.
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Benefits
Remote Work Options
Paid Vacation
Flexible Work Hours
Wellness Program
Mental Health Support
Phone/Internet Stipend
Home Office Stipend
Conference Attendance Budget
Professional Development Budget
Stock Options
Company Equity
401(k) Retirement Plan
401(k) Company Match
Hybrid Work Options
Health Insurance
Company News
Span raises $25M in Seed and Series A funding. Span, a San Francisco, CA-based provider of an AI-native developer intelligence platform, raised $25M in Seed and Series A funding. Backers included Alt Capital, Craft Ventures, SV Angel, BoxGroup, and Bling Capital. The round also included over 100 founders, CTOs, and operators from companies like Slack, Notion, Rippling, and Square. The company intends to use the funds to expand operations and its development efforts. Led by CEO J Zac Stein, Span is a provider of an AI-native developer intelligence platform bringing clarity to engineering organizations with a human-centered approach to developer productivity. In September 2025, Span launched span-detect-1, a proprietary model that helps teams measure the adoption and impact of AI-assisted coding across all AI tools. It detects AI-generated code at the chunk level and tracks it through the development lifecycle, providing verified measurement of AI's actual impact. The company partners closely with engineering leaders at companies including Ramp, Vanta, Carvana, Intercom, Braze, Writer, URBN, and ClassPass.
Span is Hiring for 4 Jobs on Simplify!
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About Span
Industries
Hardware
Energy
Consumer Software
Company Size
1-10
Company Stage
N/A
Total Funding
N/A
Headquarters
San Francisco, California
Founded
2023
Span is Hiring for 4 Jobs on Simplify!
Find jobs on Simplify and start your career today