We offer residential solar permits using both SolarAPP+ and Symium in as little as 24 hours — saving you time, cost, and compliance headaches.
Why Automated Solar Permitting Matters in 2025 ?
In 2025, cities and installers across the U.S. are under pressure to streamline rooftop solar approvals. California’s SB 379 law now requires most cities to offer an online automated permitting solution. The federal government, through the DOE and NREL, is pushing for digital solutions to scale solar faster and cheaper.
Automated permitting cuts wait times from weeks to hours, reduces costs, and improves inspection success rates. Two platforms dominate the conversation:
SolarAPP+ – Backed by the U.S. Department of Energy and free for cities.
Symbium – A California-first solution known for ultra-fast permitting and high customizability.
Quick Feature Comparison
| Feature | SolarAPP+ | Symbium |
|---|---|---|
| Launch Year | 2019 (NREL) | 2021 (Stanford spinoff) |
| Cost to Cities (AHJs) | Free | Free pilot, paid subscription later |
| Coverage | 160+ jurisdictions in 10+ states | 39+ California cities (2025 target: national) |
| Permit Speed | Instant approval (auto-check) | “Permits in seconds” via online portal |
| Storage Support | PV + storage supported | PV + storage supported |
| Integration | Accela, OpenGov, API | Accela, Tyler, CentralSquare, etc. |
| SB 379 Ready | ✅ Yes | ✅ Yes |
Deep Dive: Solar App+ vs Symbium
1. Adoption & Reach
SolarAPP+ is live in over 160 jurisdictions across multiple states.
Symbium focuses on California, aligning directly with SB 379 deadlines, now expanding nationally.
Winner: SolarAPP+ for national installers, Symbium for California-first strategies.
2. Permit Speed & Staff time Saved
SolarAPP+ users saved over 15,000 staff hours in 2023.
Symbium claims over 1.2 million hours saved across contractors and cities.
Both platforms enable permit approvals in minutes, and we process solar permits in just 24 hours using either platform.
3. Complaince and Customization
SolarAPP+ supports NEC 2023, IRC, and PV+storage up to 38.4kW.
Symbium allows deeper local customization, including zoning, affidavits, and plan review triggers.
Winner: Symbium for custom city rules, SolarAPP+ for standardized national code support.
4. Platform Integration
Both platforms integrate with leading permitting systems:
SolarAPP+: Accela, OpenGov, direct API
Symbium: Accela, Tyler, CentralSquare, and custom PTS
Symbium also includes SB 379 checklists, affidavit uploads, and white-labeled portals.
5. Cost & Funding
| Platform | Cost to Cities | Grant Funding Support |
|---|---|---|
| SolarAPP+ | Free | DOE & California CalAPP |
| Symbium | Free pilot, then paid | CalAPP + local tech funds |
Note: Both platforms qualify for SB 379 compliance grants in California.
Pros and Cons Summary
| Platform | Pros | Cons |
|---|---|---|
| SolarAPP+ | Free, national support, proven savings, fast setup | Less customization, focused on standard installs |
| Symbium | Lightning-fast permits, highly customizable, SB 379-friendly tools | Smaller national footprint, paid subscription |
Which Should You Use in 2025 ?
| Use Case | Best Platform |
|---|---|
| National solar installers | SolarAPP+ |
| California city needing SB 379 compliance | Symbium |
| AHJs on tight budgets | SolarAPP+ |
| Cities needing local rule customization | Symbium |
We Offer 24-Hour Solar Permitting with both Platforms
At Skylimit Solar, we handle permitting through SolarAPP+ and Symbium and guarantee solar permits are processed in 24 hours or less. Whether you're a homeowner, contractor, or city planner — we’ll take the complexity off your plate.
Key Takeways
Both SolarAPP+ and Symbium are compliant, fast, and cost-effective.
SolarAPP+ leads in adoption and is fully free.
Symbium is a powerhouse for California SB 379 compliance and local customization.
Choose based on region, workflow, and existing tech stack.
We can help you get solar permits in just 24 hours using either platform.
Frequently Asked Questions
Q: Is solar app+ free ?
Yes — cities pay nothing. Installers pay a small administrative fee per permit.
Q: Does Symbium supports California SB 379 ?
Yes — it’s designed with SB 379 in mind and includes instant permit workflows and compliance checklists.
Q: Can both platforms permit solar + battery storage ?
Yes — both now support PV systems with energy storage up to 38.4kW.
Need Fast Permits?
Solar permits in 24 hours
SolarAPP+ & Symbium experts
SB 379–compliant support
Contact us today or request your permit online