SO
“SPAN's newest smart panels were the first to receive UL 3141 certification.”
The SPAN Panel MAIN 40 ($4,500–$8,500 installed) is recommended with a 8.2/10 consensus score across 4 expert reviews. Experts highlight first smart panel certified to ul 3141 ahead of 2026 nec requirement and 32 circuits with individual on/off control and granular scheduling. Solar Power World says: "SPAN's newest smart panels were the first to receive UL 3141 certification." Best for: Whole-home-battery households wanting circuit prioritization, Electrification remodels, Buyers planning solar-plus-storage.
Recommended4 Expert Reviews
Price Range$4,500–$8,500 installed
Check Price on Amazon →Affiliate link — we earn a commission at no extra cost to you
SPAN Panel MAIN 40
Energy
SHE ScoreAbove Average
SmartHomeExplorer proprietary rating
6.6/10
4 expert sources
Compatibility Breadth5/10
Setup Ease5.6/10
Reliability6.5/10
Value Rating9.7/10
Future-Proofing6/10
The SPAN Panel MAIN 40 earns a SHE Score of 6.6/10, driven by strong value (9.7/10) with room to improve in compatibility breadth (5/10). Based on 4 expert sources and SmartHomeExplorer compatibility analysis.
How we calculate the SHE Score →Expert Consensus: 8.2/10 across 4 sources
Last verified:“SPAN's newest smart panels were the first to receive UL 3141 certification.”
Key Features
- ✓ 32-circuit individual control
- ✓ UL 3141 certified
- ✓ Local API (public beta 2026-02)
- ✓ Tesla/Enphase/SolarEdge battery integration
- ✓ NEC 2026-ready
Best For
Whole-home-battery households wanting circuit prioritizationElectrification remodelsBuyers planning solar-plus-storage
What Experts Agree On
What Experts Love
- ✓ First smart panel certified to UL 3141 ahead of 2026 NEC requirement
- ✓ 32 circuits with individual on/off control and granular scheduling
- ✓ Local API in public beta (2026-02) — future automation without cloud dependence
- ✓ Integrates Tesla Powerwall, Enphase IQ, and SolarEdge Home batteries
- ✓ Eaton $75M investment (March 2026) signals long-term support and joint solutions
Common Criticisms
- ✗ Full main-panel replacement required — not a retrofit product
- ✗ Installer-only with quote-based pricing ($4,500–$8,500 typical)
- ✗ No DIY path; factory-certified electricians only
- ✗ Cloud-dependent for full feature set until local API reaches general availability
What The Experts Say
SO
“Eaton invested $75 million into SPAN in March 2026, with joint solutions expected in Q2 2026.”
Ready to buy the SPAN Panel MAIN 40?
Check Price on Amazon$4,500–$8,500 installed · 4 expert sources · 8.2/10 consensus
Frequently Asked Questions
Is the SPAN Panel MAIN 40 worth it?
SPAN Panel MAIN 40 earns a 8.2/10 consensus score across our 12 expert sources. It is rated "Recommended" — Whole-home-battery households wanting circuit prioritization. At $4,500–$8,500 installed, SPAN's newest smart panels were the first to receive UL 3141 certification.
Who is the SPAN Panel MAIN 40 best for?
SPAN Panel MAIN 40 is best for: Whole-home-battery households wanting circuit prioritization, Electrification remodels, Buyers planning solar-plus-storage. Experts rate it "Recommended" overall.
How does the SPAN Panel MAIN 40 compare to other Energy options?
Among the Energy products we have reviewed, SPAN Panel MAIN 40 ranks above average with a 8.2/10 score. Eaton invested $75 million into SPAN in March 2026, with joint solutions expected in Q2 2026.
What smart home systems does the SPAN Panel MAIN 40 work with?
SPAN Panel MAIN 40 works with major smart home platforms. Check our compatibility notes on the product page for any setup requirements or hub dependencies.
What are the pros and cons of the SPAN Panel MAIN 40?
The main pros of the SPAN Panel MAIN 40 are first smart panel certified to ul 3141 ahead of 2026 nec requirement and 32 circuits with individual on/off control and granular scheduling. The main downside is full main-panel replacement required — not a retrofit product. Overall, experts rate it "Recommended" with a 8.2/10 consensus score.
Affiliate disclosure: SmartHomeExplorer.com participates in the Amazon Associates program. We earn a commission from qualifying purchases at no extra cost to you. This consensus review is based on 4 independent expert reviews — we did not test this product ourselves. Always verify current prices and availability before purchasing.