SO
“Simplifies solar and battery integration like nothing else on the market for new builds — builders can save up to $10,000 per home.”
The Span Panel MAIN 40+MID ($4,200 (~$7,000–11,000 installed)) is recommended with a 8.5/10 consensus score across 5 expert reviews. Experts highlight 40 circuit positions — 25% more than original span and built-in microgrid interconnection device saves $800–2,500. SolarBuilder Magazine says: "Simplifies solar and battery integration like nothing else on the market for new..." Best for: New construction homes, All-electric builds, Solar + battery + EV installations.
Recommended5 Expert Reviews
Price Range$4,200 (~$7,000–11,000 installed)
Check Price on Amazon →Affiliate link — we earn a commission at no extra cost to you
Span Panel MAIN 40+MID
Energy
SHE ScoreAbove Average
SmartHomeExplorer proprietary rating
6.5/10
5 expert sources
Compatibility Breadth5/10
Setup Ease5.3/10
Reliability6.7/10
Value Rating10/10
Future-Proofing5.5/10
The Span Panel MAIN 40+MID earns a SHE Score of 6.5/10, driven by strong value (10/10) with room to improve in compatibility breadth (5/10). Based on 5 expert sources and SmartHomeExplorer compatibility analysis.
How we calculate the SHE Score →Expert Consensus: 8.5/10 across 5 sources
Last verified:“Simplifies solar and battery integration like nothing else on the market for new builds — builders can save up to $10,000 per home.”
Key Features
- ✓ 40 circuits
- ✓ Built-in MID
- ✓ PowerUp software
- ✓ New build optimized
- ✓ Span ecosystem
Best For
New construction homesAll-electric buildsSolar + battery + EV installations
What Experts Agree On
What Experts Love
- ✓ 40 circuit positions — 25% more than original Span
- ✓ Built-in Microgrid Interconnection Device saves $800–2,500
- ✓ Up to $10,000 builder savings in new construction
- ✓ PowerUp software enables load management avoiding 400A service upgrades
- ✓ Same Span app and ecosystem as original panel
Common Criticisms
- ✗ Higher hardware cost (~$4,200 vs ~$3,500 for original Span)
- ✗ Newer product with less field installation data
- ✗ Primarily designed for new builds, not retrofits
- ✗ Requires professional installation
What The Experts Say
Ready to buy the Span Panel MAIN 40+MID?
Check Price on Amazon$4,200 (~$7,000–11,000 installed) · 5 expert sources · 8.5/10 consensus
Frequently Asked Questions
Is the Span Panel MAIN 40+MID worth it?
Span Panel MAIN 40+MID earns a 8.5/10 consensus score across our 12 expert sources. It is rated "Recommended" — New construction homes. At $4,200 (~$7,000–11,000 installed), Simplifies solar and battery integration like nothing else on the market for new builds — builders can save up to $10,00...
Who is the Span Panel MAIN 40+MID best for?
Span Panel MAIN 40+MID is best for: New construction homes, All-electric builds, Solar + battery + EV installations. Experts rate it "Recommended" overall.
How does the Span Panel MAIN 40+MID compare to other Energy options?
Among the Energy products we have reviewed, Span Panel MAIN 40+MID ranks above average with a 8.5/10 score. See our full category comparison for more details.
What smart home systems does the Span Panel MAIN 40+MID work with?
Span Panel MAIN 40+MID 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+MID?
The main pros of the Span Panel MAIN 40+MID are 40 circuit positions — 25% more than original span and built-in microgrid interconnection device saves $800–2,500. The main downside is higher hardware cost (~$4,200 vs ~$3,500 for original span). Overall, experts rate it "Recommended" with a 8.5/10 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 5 independent expert reviews — we did not test this product ourselves. Always verify current prices and availability before purchasing.