Do I need both SolarAPP+ and SurgePV?

For residential solar installers in participating SolarAPP+ jurisdictions, using both creates the fastest possible permit workflow: design in SurgePV (which generates the full set of calculations and drawings), then export specs to SolarAPP+ for instant code verification and approval certificate. Outside SolarAPP+ jurisdictions, SurgePV's permit package documentation is the primary compliance deliverable submitted for traditional plan review.

Can SurgePV replace SolarAPP+?

No. SurgePV produces the design drawings and calculations that permit reviewers check — but it doesn't issue AHJ approval certificates. SolarAPP+ is the tool that participating AHJs use to streamline their review process. SurgePV makes SolarAPP+ faster to use (by populating specs automatically), but doesn't replace it for AHJs that require SolarAPP+ submission.

Can SolarAPP+ replace SurgePV?

No. SolarAPP+ doesn't design systems, calculate energy production, run shading analysis, or generate financial proposals. It checks a design against code requirements but doesn't help create the design in the first place. Solar installers need design software (like SurgePV) to design and sell the system, and permit processing tools (like SolarAPP+ in participating markets) to get it approved faster.

Is SolarAPP+ really free?

Yes. SolarAPP+ is a free tool developed by NREL with federal funding. There are no fees for installers or AHJs to use it. NREL maintains the platform and equipment database. Some AHJs charge their standard permit application fee separately (which is paid regardless of whether SolarAPP+ is used), but the SolarAPP+ tool itself has no cost.

SolarAPP+ vs. SurgePV: Which Tool Does Your Solar Business Need?

Q: What is the main difference between SolarAPP+ and SurgePV?

SolarAPP+ is a permit processing tool — it automates plan review for residential solar systems under 15 kW in participating AHJs and issues instant approval certificates. SurgePV is solar design and proposal software — it handles system design, shading analysis, energy simulation, financial modeling, and permit documentation (one-line diagrams, calculations, permit packages). They solve different parts of the workflow and can be used together.

Installers researching permit automation tools sometimes ask whether SolarAPP+ replaces their design software — or whether SurgePV makes SolarAPP+ unnecessary. The short answer: they’re not competing tools. They solve different problems in the solar installation workflow.

Here’s a clear breakdown of what each tool does and how they work together.

What Each Tool Does

Function	SolarAPP+	SurgePV
System design (roof layout, module placement)	No	Yes
Shading analysis	No	Yes
Energy production simulation	No	Yes
Financial modeling and ROI	No	Yes
Customer proposal generation	No	Yes
NEC 690 compliance calculations	Partial (at check time)	Yes (during design)
One-line electrical diagram	No	Yes
Permit package documentation	No	Yes
AHJ approval certificate	Yes (participating AHJs only)	No
Plan review automation	Yes (participating AHJs)	No
Available markets	250+ AHJs	All markets
Cost	Free	Subscription

The tools address completely different stages of the installation workflow:

SurgePV handles everything from site assessment to signed proposal to permit-ready documentation
SolarAPP+ handles the moment between “permit documents ready” and “AHJ approval in hand”

The Solar Workflow: Where Each Tool Fits

1. Site assessment
2. System design ← SurgePV
3. Energy simulation ← SurgePV
4. Financial proposal ← SurgePV
5. Customer sign-off
6. Permit documentation ← SurgePV
7. AHJ plan review ← SolarAPP+ (participating) OR traditional review
8. Permit approval
9. Installation
10. Final inspection
11. Utility interconnection
12. Permission to operate

SurgePV drives steps 2–6. SolarAPP+ accelerates step 7 in markets where it’s available. Both are needed in the optimal workflow.

The Integrated Workflow: SurgePV + SolarAPP+

For a residential installer working in Sacramento, Denver, or other SolarAPP+ markets, the combined workflow looks like:

Without Integration

Design in SurgePV (30–45 minutes)
Manually re-enter specs into SolarAPP+ (15–20 minutes)
Get SolarAPP+ approval (instant)
Submit to AHJ (same day)

Total time to submission: ~1 hour + any data re-entry errors

With SurgePV → SolarAPP+ Integration

Design in SurgePV (30–45 minutes)
Click “Export to SolarAPP+” — specs pre-populated automatically
Get SolarAPP+ approval (instant)
Submit to AHJ (same day)

Total time to submission: ~35–50 minutes with no re-entry errors

The integration eliminates the manual re-entry step and the errors it introduces — the most common source of SolarAPP+ compliance check failures is data entry discrepancies between the design and what’s typed into SolarAPP+.

Integration Matters for Volume

A high-volume installer doing 50 residential projects per month might spend 15–20 minutes per project on SolarAPP+ data entry without integration. That’s 12–17 hours per month of manual re-entry — plus the re-work when errors cause SolarAPP+ check failures. Direct SurgePV → SolarAPP+ export eliminates this entirely.

Where SolarAPP+ Doesn’t Help (And SurgePV’s Permit Docs Stand Alone)

For roughly 95% of US AHJs that haven’t adopted SolarAPP+, the permit package from SurgePV is the primary submission:

One-line electrical diagram with NEC 690.7, 690.8, 690.12 calculations annotated
String sizing table (Voc corrected, Imp, Isc per string)
Site plan showing array location and setbacks
Equipment cut sheets (modules, inverter, racking, RSD)
Structural calculations or stamped structural letter

AHJ plan reviewers check these documents manually. SurgePV-generated permit packages are formatted to match what reviewers expect — clear NEC calculation tables, consistent labeling, and drawings that look like engineered documents rather than system sketches.

Cost Comparison

Tool	Cost
SolarAPP+	Free
SurgePV	Subscription (see /pricing)

SolarAPP+ is funded by NREL/DOE and available at no charge to installers and AHJs. SurgePV is commercial software priced per user or per project volume. The ROI calculation for SurgePV is about time saved in design, simulation, and proposal generation — not about permit fees, which SolarAPP+ doesn’t affect directly.

Who Needs What

SolarAPP+ alone (without design software):

Not practical for professional installers — no design, no simulation, no proposals
SolarAPP+ requires you to already have a fully designed system to enter

Design software without SolarAPP+:

Works for 100% of US markets (SolarAPP+ only covers 250 AHJs)
Generates the permit documentation that traditional AHJ review requires
The SolarAPP+ step is an optimization for speed in participating markets, not a requirement

SurgePV + SolarAPP+ together:

Optimal for high-volume residential installers in CA, CO, FL, OR SolarAPP+ markets
Fastest possible permit workflow with design export integration
Covers all markets (SurgePV for non-SolarAPP+ AHJs; both for SolarAPP+ AHJs)

Bottom Line

If you’re a residential solar installer doing volume in California, Colorado, or other SolarAPP+ markets — use both. SurgePV designs the system, SolarAPP+ approves the permit same-day. If you’re working in Texas, Southeast, or other markets without SolarAPP+ adoption, SurgePV’s permit package is your primary compliance tool.

The Fastest Residential Solar Workflow

SurgePV + SolarAPP+ integration: design, simulate, propose, and permit in a single workflow. See it in a live demo.

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Frequently Asked Questions

What is the main difference between SolarAPP+ and SurgePV?

SolarAPP+ automates permit plan review for residential solar systems in participating AHJs and issues instant approval certificates. SurgePV is solar design software that handles system design, energy simulation, financial proposals, and permit documentation. They solve different workflow stages and can be used together.

Do I need both tools?

For high-volume residential installers in SolarAPP+ markets (parts of California, Colorado, Florida, Oregon), using both creates the fastest possible permit workflow. For installers in non-participating AHJ markets, SurgePV’s permit package documents are the primary submission tool without any SolarAPP+ step.

Is SolarAPP+ free?

Yes. SolarAPP+ is a free NREL-developed tool with no charge for installers or AHJs. The permit application fee charged by the AHJ itself is separate and unchanged regardless of whether SolarAPP+ is used.