Expert Verified — Written by Keyur Rakholiya, SurgePV Editorial. 10 tools tested against small-installer workflows. Pricing verified July 2026. Based on 1+ GW of delivered projects and direct experience running a solar EPC across 50+ countries.
Small installers lose money on software in 2 opposite ways. Some pay enterprise prices for features they never use. Others stay on spreadsheets too long and lose deals to faster competitors.
We tested 10 tools from the perspective of a 1 to 10 person installation company. The questions are different at this size. Per-seat pricing matters more than admin controls. Speed matters more than bankability. A tool the owner can learn in a weekend beats a tool that needs a dedicated admin.
This list ranks what works when the same people who sell the job also design it and install it. We included our own product at its honest rank, with its real limitations.
Quick Picks
| Pick | Tool | Why |
|---|---|---|
| Best free all-in-one | OpenSolar | $0 forever, design plus CRM plus proposals |
| Best design-to-proposal value | SurgePV | Engineering-grade design, shading, and financials in 1 workflow |
| Best pay-per-project | Pylon | $4 per project, no monthly fees, unlimited users |
| Best for SolarEdge shops | SolarEdge Designer | Free and DNV validated within 1% of PVsyst |
| Best for battery bundles | Solargraf | 25+ battery manufacturers, NEM 3.0 modeling |
| Best premium option | Aurora Solar | Fastest sales workflow, if the budget allows it |
How We Evaluated
We scored each tool on 5 criteria weighted for small-team reality.
| Criterion | Weight | What We Measured |
|---|---|---|
| Total cost | 30% | Subscription, per-seat, and per-project price at small-team volume |
| Speed to quote | 25% | Minutes from address to customer-ready proposal |
| Learning curve | 20% | Can the owner learn it without a training budget |
| Design accuracy | 15% | Shading and production realism a reputation can stand on |
| Room to grow | 10% | Ceiling before you need a second tool |
At-a-Glance Comparison
| Tool | Best For | Starting Price | Free Tier | Cloud | Standout |
|---|---|---|---|---|---|
| OpenSolar | Free all-in-one | $0 | Yes, unlimited | Yes | Full CRM and e-signatures at no cost |
| SurgePV | Design-to-proposal value | $1,899/yr (3 users) | Trial | Yes | Quote carries real shading and financial data |
| Pylon | Pay-per-project | $4/project | 5 free projects | Yes | No monthly fees, unlimited users |
| SolarEdge Designer | SolarEdge shops | $0 | Yes | Yes | Free, within 1% of PVsyst |
| Solargraf | Battery bundles | $2,799/yr (Starter) | Trial credits | Yes | Good/Better/Best pricing in 3 minutes |
| Aurora Solar | Premium sales teams | Custom | Demo only | Yes | Sales Mode quotes in under 3 minutes |
| Arka360 | Built-in CRM + permits | $199/mo (US) | Contact sales | Yes | NEC permit packages in 48 hours |
| HelioScope | Moving into C&I | $159/mo | Demo only | Yes | Bankable simulations, DNV validated |
| Scanifly | Drone site surveys | Custom | Demo only | Yes | Cuts survey time and software spend |
| PVsyst | Lender-grade reports | ~$775/yr | 30 days | No (Windows) | The bankability standard |
1. OpenSolar — Best Free All-in-One for Small Installers
OpenSolar is the default answer for a small installer starting out. Over 28,000 users in 185+ countries pay nothing for design, CRM, proposals, and e-signatures, per OpenSolar.
What It Does Well
The price is the headline. Zero dollars, unlimited projects, unlimited users. OpenSolar monetizes hardware partners and lenders instead of installers. For a new business watching every expense, that removes the software budget question entirely.
The scope is real, not a crippled trial. The 3D design studio includes real-time shading. Proposals are interactive and mobile-friendly, with cash, loan, lease, and PPA financing. The built-in CRM tracks the pipeline from lead to signed contract. Most teams are operational in under 1 day.
Users report proposals in under 2 minutes once templates are set. Accuracy is third-party validated by PVEL and a US government agency. The company has raised $45M, including a $20M round in October 2025, so the free model looks durable.
Our Take: Start here. Every dollar a small installer spends on software before mastering OpenSolar is probably wasted. Move up only when you hit a specific wall, not before.
Where It Falls Short
The 500 kW project cap rules out serious commercial work. Photogrammetry-based modeling is less precise than LIDAR or drone surveys. There is no offline mode, and shading depth will not satisfy a lender on a financed deal.
Key Features
- 3D design with real-time shading
- Interactive proposals with e-signature
- Built-in CRM, payments, and lender integrations
- iOS and Android apps for field work
Pricing
- Free tier: $0 — unlimited projects, users, and core features
- Paid extras: Optional premium imagery and enterprise white-label
Who Should Use OpenSolar
Strong fit: New installers, 1 to 10 person residential teams, and anyone under 20 projects per month. Probably not right for: C&I work above 500 kW and deals needing lender-grade yield reports.
2. SurgePV — Best Design-to-Proposal Value for Growing Teams
Full disclosure: we build SurgePV. We ranked it #2 because OpenSolar’s free tier is the right starting point for a truly budget-constrained shop. When accuracy starts costing you deals, this is where we are strongest.
What It Does Well
Small installers feel a specific pain: the homeowner’s cousin ran a competing quote, and your production estimate has to survive scrutiny. Free tools give you a number. SurgePV gives you a number you can defend.
The 3D rooftop design, physics-based shadow analysis, and generation and financial modeling run in 1 cloud platform. The proposal inherits the same numbers the simulation produced. Payback, internal rate of return (IRR), and net present value (NPV) come from the actual design, not a retyped spreadsheet. Clara AI helps draft proposal copy so the owner is not writing sales text at 10 pm.
The pricing structure suits small teams. The $1,899 per year plan covers 3 users with no per-project fees. At 10 projects per month, that works out to under $16 per project. In our own testing, a residential quote takes under 10 minutes from address to sendable proposal.
Our Take: SurgePV is the right first paid tool when free stops being enough. You pay real money, and in return your quotes carry engineering a competitor’s free-tier quote cannot match.
Where It Falls Short
SurgePV has no native CRM, so lead tracking needs an external tool or spreadsheet. It is not free, and very early-stage installers should start with OpenSolar first. The component database is deepest in markets we serve directly.
Key Features
- 3D rooftop design with automated string sizing
- Shadow analysis built into every design
- Generation and financial tool with payback, IRR, and NPV
- Branded solar proposal software output with Clara AI copy assistance
Pricing
- For 3 Users plan: $1,899/year — design, simulation, financials, and proposals included
- Free trial: Available with full capabilities
Who Should Use SurgePV
Strong fit: Small installers quoting 10+ projects per month who win on credibility, not just speed. Probably not right for: Brand-new businesses with zero revenue, or sales-only teams wanting a built-in CRM.
Want to see the full workflow on a real project? Book a 20-minute demo.
3. Pylon — Best Pay-Per-Project Software for Low Volume
Pylon (GetPylon) is an Australian-built tool with a pricing model made for irregular volume. Over 3,500 solar businesses use it, and a 2025 installer survey voted it the #1 solar design tool, per Pylon.
What It Does Well
At $4 per project with no monthly fees, you pay only when you quote. For an installer doing 5 to 15 projects a month, that is $20 to $60 in software costs. Unlimited team users come with no per-seat charges, which suits family-run crews.
Speed is excellent. Users report proposals in under 2 minutes, and panel placement takes under a minute after familiarization. The 3D shading analysis won a Finder innovation award in 2021.
The documentation set punches above its price. One-click single-line diagrams (SLDs), voltage rise reports, job sheets, and owner manuals generate automatically. The iPad-optimized interface suits quoting on site, from the customer’s kitchen table.
Our Take: Pylon is the smartest economics on this list for installers with uneven volume. If your quote count swings month to month, per-project pricing beats any subscription.
Where It Falls Short
Only 3 proposal templates limit brand customization. Design variations cap at 5 per project. Commercial and utility work is out of scope, and imagery coverage has gaps in 10 to 20% of regions.
Key Features
- Pay-per-project pricing with unlimited users
- Award-winning 3D shading analysis
- One-click SLDs and voltage rise reports
- iPad-optimized field workflow
Pricing
- Standard: $4/project — design, imagery, financials, proposals
- Pro: $10/project — adds batteries, custom loads, commercial
- Free trial: 5 free Standard projects, no credit card
Who Should Use Pylon
Strong fit: Small residential installers with 5 to 20 quotes per month and variable volume. Probably not right for: High-volume teams, C&I projects, and brands needing custom templates.
4. SolarEdge Designer — Best Free Tool for SolarEdge Shops
SolarEdge Designer is free for certified SolarEdge installers. If your installs already run on SolarEdge hardware, your design and quoting layer costs nothing.
What It Does Well
Free with validation is a rare combination. DNV GL found Designer’s energy estimates within 1% of PVsyst, with a slight conservative bias. Over 50,000 users have created 2.8 million layouts across 170+ countries.
The automation is fast. Automated roof detection, automatic stringing, and instant design validation cut design time sharply. Financial analysis supports fixed, per-watt, and bill-of-materials pricing with return-on-investment forecasts. Designs sync directly into mySolarEdge for commissioning, which saves a data-entry step after the sale.
Our Take: If 90% of your installs use SolarEdge hardware, Designer is the obvious free quoting layer. The moment you quote another inverter brand, you need a second tool.
Where It Falls Short
Hardware lock-in is absolute: SolarEdge equipment only. Shading analysis is the most-cited user weakness, and only fixed-tilt systems are supported. Proposal output is minimal compared with dedicated sales tools.
Key Features
- Automated roof detection and auto-stringing
- DNV GL validated simulation, within 1% of PVsyst
- Battery backup sizing and financial analysis
- Direct sync with mySolarEdge commissioning
Pricing
- Designer: $0 — free for certified SolarEdge installers
Who Should Use SolarEdge Designer
Strong fit: SolarEdge-committed residential installers and small commercial teams. Probably not right for: Multi-brand shops and complex shading sites.
5. Solargraf — Best for Battery-Heavy Residential Quotes
Solargraf, owned by Enphase since 2021, is built for speed on straightforward US residential jobs. Its pitch is a full proposal in 3 minutes.
What It Does Well
Battery modeling is the differentiator at this price. Solargraf supports Enphase IQ Batteries, Tesla Powerwall, and 25+ manufacturers with backup scenario comparisons. California installers get NEM 3.0 optimization with CPUC hourly sell rates, which directly affects the savings math in every quote.
The Express Editor lets the owner adjust quotes on the spot without a design team. The Good/Better/Best feature presents 3 pricing options in 1 proposal, which lifts close rates on price-sensitive homeowners. DocuSign integration closes the deal in the same session.
Permitting is included. DIY permit packages generate AHJ-compliant documents with validated SLDs. For a small US shop, that covers quote through permit in 1 subscription.
Our Take: Solargraf earns its price when batteries drive your pipeline. Verify its shading output against a second tool before trusting production numbers on tree-heavy roofs.
Where It Falls Short
Shading accuracy is the most common user complaint, and some teams cross-check in Aurora or HelioScope. There is no built-in CRM. Billing is annual only, and it costs more than OpenSolar’s free tier.
Key Features
- 3-minute proposals with Express Editor
- Good/Better/Best multi-option pricing
- Battery design for 25+ manufacturers
- DIY AHJ-compliant permit packages
Pricing
- Starter: $2,799/year — 240 projects, 2 users
- Free trial: New users get 120 project credits
Who Should Use Solargraf
Strong fit: US residential installers selling battery attachments and California NEM 3.0 work. Probably not right for: Teams needing shading precision guarantees or a built-in CRM.
Quote From Real Engineering Data
See how SurgePV turns design, shading, and financials into a customer-ready proposal in 1 workflow.
Book a DemoNo commitment required · 20 minutes · Live project walkthrough
6. Aurora Solar — Best Premium Option If Budget Allows
Aurora Solar is the reference platform for US residential solar sales. Over 7,000 companies use it, and most of them are larger than the audience for this list.
What It Does Well
Sales Mode is the fastest polished quoting workflow we tested. Users report proposals in under 3 minutes once a design exists. LIDAR-assisted 3D modeling and automated shading analysis feed real numbers into every quote, and Contract Manager adds e-signatures in the same flow.
G2 reviewers rate Aurora 4.6 out of 5, with support scoring 9.0 out of 10. If a small installer is scaling toward a 10+ rep sales team, Aurora is the platform that grows with that plan.
Our Take: Aurora is excellent software at the wrong price for most small installers. Consider it when you have dedicated sales reps, not while the owner still runs quotes between site visits.
Where It Falls Short
Price is the barrier. Aurora does not publish rates, and reviewers consistently call it expensive for small teams. The automated roof modeling is hit-or-miss on unusual roofs, so someone still verifies every design.
Key Features
- Sales Mode proposals in under 3 minutes
- LIDAR-assisted 3D modeling and shading
- Contract Manager with e-signature
- Pricing automations and dealer customizations
Pricing
- Foundation, Build, Grow, Scale: Custom pricing, contact sales
- Free trial: Guided demo only
Who Should Use Aurora Solar
Strong fit: Funded residential installers scaling a dedicated sales team. Probably not right for: Owner-operators and teams quoting under 15 projects per month.
7. Arka360 — Best with Built-in CRM and Permit Packages
Arka360 serves 4,000+ installers across 27 countries, with deep roots in the US and India. It bundles design, CRM, and proposals at small-business prices.
What It Does Well
The all-in-one scope stands out at $199 per month. Design, shading analysis, a built-in CRM, and proposal generation live in 1 platform. Users report proposals in under 5 minutes and full workflows in 20.
The permit packages solve a real small-installer bottleneck. Arka360 delivers NEC-compliant permit sets in 48 hours, or under 8 hours expedited, with PE stamps available. Outsourcing that work usually costs more per project than the whole subscription.
Ease of use is the top praise in its G2 reviews, and the platform holds a 4.7 out of 5 rating across 117 reviews. India pricing starts at ₹7,500 per month for teams serving that market.
Our Take: Arka360 is the practical pick for a small installer who wants CRM plus permits without stitching 3 tools together. Expect some rough edges in performance.
Where It Falls Short
Missing features are the top user complaint on G2. Users report performance issues and occasional instability. Panel re-selection for each new polygon slows layout work, and utility-scale support is limited.
Key Features
- 3D design with LIDAR-based shading analysis
- Built-in CRM with lead and pipeline tracking
- NEC-compliant permit packages with PE stamps
- ArkaGo mobile app for field proposals
Pricing
- US Basic: $199/month — 1 user, residential and commercial
- US Premium: $358/month — 2 users, battery sizing, CAD export
- India Lite: ₹7,500/month — 360 residential projects
Who Should Use Arka360
Strong fit: Small EPCs wanting CRM, design, and permits in 1 subscription. Probably not right for: Teams needing polished, stable performance at high volume.
8. HelioScope — Best for Small Installers Moving into C&I
HelioScope, now part of Aurora Solar, is the fast path when a residential shop starts quoting 100 kW+ commercial jobs. DNV validation found it within 1% of PVsyst, and Sunstone Credit recognized it as bankable in October 2025.
What It Does Well
Commercial customers ask harder questions than homeowners. HelioScope answers them with module-level simulation for rooftops, carports, and ground mounts up to 15 MW. P50 comes on the Basic plan; P90, P95, and P99 arrive on Pro.
Users report 4x faster design iterations than desktop tools. The Pro plan adds a drag-and-drop proposal editor with custom branding, so a 5-person shop can present like a firm 10x its size.
Our Take: Do not buy HelioScope for residential work. Buy it the month your first real C&I prospect asks for P90 numbers, because residential tools cannot produce them.
Where It Falls Short
There is no native battery modeling, so storage quotes need an Energy Toolbase integration. Financial analysis scores 5.2 out of 10 on G2. Residential work under 15 kW feels clumsy, and the $159 per month entry covers just 1 user and 10 projects.
Key Features
- Module-level simulation within 1% of PVsyst
- P50/P90/P95/P99 production estimates
- Drag-and-drop proposal editor with branding
- Energy Toolbase and PVsyst export integrations
Pricing
- Basic: $159/month — 1 user, 10 projects, 1.25 MW cap
- Pro: $259/month — adds LIDAR, P90+, financials, proposals
Who Should Use HelioScope
Strong fit: Small installers adding commercial projects in the 100 kW to 5 MW range. Probably not right for: Pure residential teams and storage-heavy deals.
9. Scanifly — Best for Drone-Based Site Surveys
Scanifly attacks the most dangerous hour in a small installer’s week: the tape-measure roof survey. It turns drone imagery into design-ready 3D models.
What It Does Well
Falls are the leading cause of death in construction, and roof surveys put small crews on ladders every week. Scanifly’s drone workflow keeps people on the ground. Hammond Energy reported an 84% survey time reduction with accurate results on a 1.8 MW project.
The cost case is documented. Scanifly reports EmPower Solar cut software spend 53% after switching from Aurora, with average savings of $100 to $300 per project. The free mobile app handles field operations, and the IronRidge integration from January 2026 saves a reported 1 to 3 hours per project on racking design.
Our Take: Scanifly is the right second tool for a small installer doing complex roofs or chasing survey safety. It complements a quoting platform rather than replacing one.
Where It Falls Short
Subscription pricing is not public, which makes budgeting awkward. You need a drone and a Part 107-certified pilot in the US. The sales proposal layer is thinner than dedicated quoting tools.
Key Features
- Drone-based 3D site modeling
- Free mobile app for field operations
- Racking integrations with IronRidge, K2, and Unirac
- Plan sets and design exports
Pricing
- Subscription: Custom pricing, contact sales
- Mobile app: Free with subscription
Who Should Use Scanifly
Strong fit: Small installers surveying complex or steep roofs, and teams prioritizing crew safety. Probably not right for: Shops quoting simple roofs remotely, or teams without drone capability.
10. PVsyst — Best When a Lender Needs Bankability
PVsyst is not small-installer software in the daily-driver sense. It earns the last slot because 1 financed project can force the purchase. Lenders have trusted its reports for 30+ years.
What It Does Well
PVsyst is the bankability standard. P50, P90, P95, and P99 uncertainty analysis is built in, and most financiers require exactly that, per PVsyst. G2 reviewers rate its design and engineering depth at 9.4 out of 10, the highest in the category.
At roughly $775 per year, it is cheaper than most tools on this list. Version 8 adds unlimited orientations, sub-hourly clipping correction, and detailed loss modeling. For a small installer landing a first financed commercial deal, a PVsyst report carries weight no polished proposal can match.
Our Take: Buy PVsyst when a lender or commercial client asks for it by name. Use a real design tool for everything customer-facing, and treat PVsyst as the back-office proof.
Where It Falls Short
The interface is dated, and ease of use scores 7.1 out of 10 on G2. It runs on Windows only with no cloud collaboration. There are no customer-facing proposals, and the learning curve is steep for a non-engineer.
Key Features
- P50/P90/P95/P99 bankable uncertainty analysis
- 14,000+ modules and 4,500+ inverters in the database
- Detailed loss, bifacial, and storage modeling
- Batch processing for multiple scenarios
Pricing
- Professional: CHF 700/year (~$775) — volume discounts from 2 licenses
- Free trial: 30 days, full features
Who Should Use PVsyst
Strong fit: Small installers quoting financed C&I projects where lenders set the rules. Probably not right for: Residential sales teams and anyone who dislikes engineering software.
The Biggest Myth in Small-Installer Software
The myth: small installers need cheap software because they are small. The reality: small installers need fast software because they have no slack.
A 50-person company absorbs a bad process. Someone fixes the shading number, someone else re-types the quote. A 3-person company has no someone else. Every error lands on the owner, usually at night, usually after the site visit.
This flips the usual buying logic. The question is not “what is the cheapest tool?” It is “what tool removes the most rework hours per week?” A $1,899 subscription that kills 5 hours of rework beats a free tool that creates 3. Run your own numbers before you copy someone else’s stack.
The counter-myth is just as expensive: buying enterprise software to look professional. Homeowners do not ask what software you use. They ask when you can start and whether the savings number is real.
How to Choose Software for a Small Installation Business
Work through these 5 questions in order.
- What is your monthly quote volume? Under 10: start free on OpenSolar or pay per project on Pylon. Over 15: a flat subscription wins on cost per quote.
- Where do your deals die? If you lose on speed, optimize for quote time. If you lose on credibility, invest in design accuracy and bankable numbers.
- Who runs the software? If it is the owner, pick the tool with the shortest learning curve, not the longest feature list.
- What is your hardware mix? Single-brand shops should exploit free vendor tools like SolarEdge Designer. Multi-brand shops need vendor-neutral platforms.
- What is your next segment? Residential-only shops need speed. Shops eyeing C&I should pick a platform with P90 simulations before the first commercial prospect asks.
Pro Tip
Take your 3 most recent lost deals and rebuild each quote inside any free trial. If the tool would have produced a faster or more defensible quote on those exact jobs, it will pay for itself. If not, keep looking.
For broader context, see our full solar software hub, the best solar design software ranking, the best solar quoting software breakdown, and the best solar installer software list for larger crews. Budget-first teams should also read free solar design software and our solar CRM guide.
Conclusion
Small installers do not need the most powerful software. They need the least rework per dollar. OpenSolar is the right free starting point. SurgePV is the right first paid upgrade when quote credibility starts deciding deals. Pylon fits irregular volume, and HelioScope or PVsyst enter the picture when commercial lenders do.
- Start free today: build your next 3 real quotes in OpenSolar and time yourself.
- Run the rework math: count the hours you spend fixing numbers between tools, and price them.
- Trial 1 paid upgrade: rebuild your hardest recent quote in SurgePV or Pylon and compare the output side by side.
If you want to see how SurgePV handles design, shading, financials, and proposals in 1 workflow, book a 20-minute demo.
Related Posts
- Best Solar Design Software
- Best Solar Quoting Software
- Best Solar Installer Software
- Best Solar CRM Software
Where SurgePV fits
For the product-side detail, SurgePV residential design workflow covers the workflow, outputs and limits.
Frequently Asked Questions
What is the best solar software for a small installer?
For most small installers, OpenSolar is the best starting point because it is free with unlimited projects. SurgePV is the best upgrade when you need engineering-grade design, shadow analysis, and proposals in 1 workflow. Pylon fits teams with low or irregular project volume.
How much should a small installer spend on solar software?
Zero to $2,000 per year is realistic. Free tools like OpenSolar and SolarEdge Designer cover basic design and proposals. A full professional stack costs $1,500 to $2,000 per year for a small team. Enterprise platforms at $5,000+ per year rarely pay back below 15 to 20 projects per month.
Is free solar software good enough for a real business?
Yes, up to a point. OpenSolar handles design, proposals, CRM, and e-signatures for free, but caps out around 500 kW and lacks engineering depth. Most small installers outgrow free tools when they start quoting commercial work or need bankable production numbers.
Can 1 person run a solar business with software?
Yes. Cloud tools let a solo installer handle site design, production estimates, financials, and proposals without hiring a designer or engineer. The bottleneck shifts from software to site visits and installation capacity.
Do small installers need a CRM?
Not a dedicated one at first. A spreadsheet works under 20 active leads. Past that, use a platform with a built-in CRM like OpenSolar or Arka360, or add a lightweight standalone CRM. Buying Salesforce-scale software at 5 employees is a common money-wasting mistake.
What software do small installers use for permits?
Some design platforms generate permit-ready single-line diagrams and plan sets. Arka360 sells NEC-compliant permit packages with PE stamps. Many small US installers also outsource permit design to services like GreenLancer instead of buying permit software.
