Solar Proposal Software in 2026: 7 Tools That Actually Close Deals

The proposal is where the close rate lives. A residential or small-commercial installer designing 220 systems per year converts somewhere between 18 and 38 percent of qualified leads, and the platform the team uses to render the proposal moves that number by three to seven percentage points in either direction. The wrong proposal tool sends a static PDF that lands in the homeowner’s spam folder. The right one ships a shareable URL the buyer opens on a phone, with a financing module, an e-signature, and the installer brand colors. The seven platforms ranked below are the ones a working bid team actually short-lists.

Direct answer. The best solar proposal software in 2026 is SurgePV (best all-in-one design plus proposal platform at $1,299 to $1,899 per user per year, with interactive web proposal and e-signature included), Aurora Sales Mode (best residential close motion at a high per-seat price), Solargraf (best proposal-first sales rep tool), and OpenSolar (best free sticker for solo installers). SurgePV is the only platform that bundles the proposal layer with 8,760-hour shading, NEC SLD, and AI design from a street address in one license.

This guide is written for the installer or developer whose binding constraint sits on the close rate, not on the design depth. The voice we are speaking to is the bid lead or operations head running between 5 and 25 reps who has already picked a design tool and is shopping a proposal layer that will actually move the close rate. We will name what each platform wins on. We will name what each loses on. And we will rank every credible option against the four jobs a solar proposal has to do.

What a Solar Proposal Has to Do in 2026

A solar proposal in 2026 is not a PDF. It is a shareable web experience that turns a quoted system into a signed contract inside the buyer’s first 48 hours. The platforms that win the close rate ship four things in one motion. The platforms that lose ship a static PDF the buyer prints and never opens again.

The four jobs in order of how the buyer experiences them:

1. Interactive web proposal on a shareable URL. The buyer opens a link on a phone and walks through the system, the financing, the warranty, and the installation timeline at their own pace.
2. Financing module with side-by-side comparison. Loan, lease, PPA, and cash views the buyer can toggle without a sales call. The financing math is the conversion lever on close rate.
3. E-signature flow. The buyer signs inside the proposal experience. No DocuSign hand-off, no email round-trip, no Friday-night close that gets lost over the weekend.
4. White-label brand control. The installer’s logo, colors, fonts, and domain on the proposal. The platform is invisible to the buyer.

A platform that ships three of four is not a 2026 proposal platform. It is a 2018 proposal tool with a feature roadmap. The pricing math in the comparison section assumes the team adds the missing feature through a second subscription when needed.

The Proposal Close 4

Every solar proposal platform claims close-rate parity at the demo. Most fail the test that actually matters: does the new tool ship the four jobs from one license, and does the buyer experience the proposal as a polished branded artifact rather than a generic platform with the installer name pasted on top? The Proposal Close 4 names them.

A platform that ships three of four is a partial answer. The team backfills the missing job with a second subscription, which doubles the cost of the proposal layer and breaks the brand experience at the seam where the buyer notices.

The 7 Best Solar Proposal Software Platforms in 2026

This table ranks the seven platforms against the Proposal Close 4, the per-seat cost, and the segment fit a residential or small-commercial bid team actually needs.

Platform	Close 4 pass	Starting price	Interactive web URL	Financing module	E-signature	Best for
SurgePV	4 / 4	$1,299 / user / yr	✓	✓	✓	All-in-one design plus proposal
Aurora Sales Mode	4 / 4	$159–$259 / user / mo	✓	✓	✓	High-volume residential close motion
Solargraf	4 / 4	~$129 / user / mo	✓	✓	✓	Proposal-first sales reps
OpenSolar	3 / 4	Free + transaction fees	✓	✓ (partner network only)	✓	Solo installers under 50 systems / yr
Enact Solar	3 / 4	~$99 / user / mo	✓	✓ (India-skewed)	✓	India residential PM Suryaghar workflow
Pylon	3 / 4	$59 / user / mo	✓	✓ (basic)	✓	Solo installers, India and SEA markets
Sighten	2 / 4	Enterprise	✗ (residential lender white-label)	✓	✓	Enterprise lender-led TPO programs

1. SurgePV. The All-in-One Design plus Proposal Platform

SurgePV is built by the engineering team behind Heaven Designs, which delivers thousands of stamped permit packets every quarter. The benefit for a bid team: a single cloud license that ships AI 3D roof modeling, 8,760-hour module-level shading, NEC 2023 SLD, and a white-label interactive proposal on a shareable URL, all from one workspace. The proposal layer covers loan, lease, PPA, and cash side by side, an in-proposal e-signature, brand colors and logo on the installer’s own subdomain, and a buyer-facing 3D model the homeowner can rotate on their phone.

SurgePV pricing is $1,899 per user per year on the individual tier, $1,499 on the three-user team plan, and $1,299 on the five-user team plan. The proposal layer is included on every tier, not gated to enterprise. Book a SurgePV demo to see a live proposal flow from satellite address to signed contract.

Verdict. SurgePV is the right call for any installer running between 50 and 600 systems per year where the design tool and the proposal tool need to live in one workspace, on one URL, with one onboarding and one brand voice. Skip it if the team already runs Aurora at the Grow tier and the Sales Mode close rate is above 32 percent. The retraining cost wipes out the license saving on that profile.

2. Aurora Sales Mode

Best for: High-volume residential teams running 200+ installs per year where the Aurora Sales Mode motion already powers the close.

Strengths: The strongest residential close motion in the market. Interactive 3D the buyer rotates on a phone. Mature financing partner network. Brand control is solid.

Weaknesses: Per-seat $159 to $259 per month. Sales Mode is an add-on, not the base tier. The Aurora Solar alternatives guide covers the broader picture.

SurgePV vs Aurora: SurgePV ships the same Sales Mode-equivalent motion at one-quarter the per-seat cost, with the design layer bundled in the same license.

3. Solargraf

Best for: Proposal-first sales reps in US and Canadian residential markets with strong financing options.

Strengths: Polished proposal UX. Mature financing module. Lead-capture forms. Decent integrations.

Weaknesses: Engineering depth is weak. No 8,760-hour shading. The team has to pair Solargraf with a design tool, which doubles the cost.

SurgePV vs Solargraf: A team that pairs Solargraf with HelioScope or Aurora pays roughly $4,500 to $7,200 per seat per year for the combined stack. SurgePV ships both layers from one license at $1,299 per seat per year.

4. OpenSolar

Best for: Solo installers running tight cash under 50 systems per year where the free sticker still wins.

Strengths: No upfront platform cost. Strong proposal builder for the residential pitch. Decent satellite roof trace.

Weaknesses: Transaction fees on financed deals compound past 100 systems per year. Financing partner network is captive. See the OpenSolar alternatives guide.

SurgePV vs OpenSolar: SurgePV wins for any team above 100 systems per year. The transaction fees on OpenSolar exceed the SurgePV license cost on volume.

5. Enact Solar

Best for: India residential installers handling PM Suryaghar subsidy paperwork on volume.

Strengths: PM Suryaghar subsidy auto-calc built into the proposal. Indian DISCOM format presets. Low per-seat price.

Weaknesses: US AHJ workflow is thin. Financing module is India-skewed. Engineering depth is shallow.

SurgePV vs Enact: SurgePV wins outside the India residential-only motion the moment design depth or US AHJ compliance matters. Enact wins inside the PM Suryaghar volume play.

6. Pylon

Best for: Solo installers in India, the Philippines, and Indonesia where the per-seat budget is the binding constraint.

Strengths: $59 per month per seat. Fast onboarding. Polished proposal motion for the residential pitch.

Weaknesses: Financing module is basic. Engineering depth is shallow. Does not scale into C&I above 100 kW.

SurgePV vs Pylon: SurgePV wins the moment the installer crosses 10 systems per week or needs C&I depth.

7. Sighten

Best for: Enterprise lender-led third-party-ownership programs and residential financing portals.

Strengths: White-label lender experience. Mature financing math. Compliance-tight for TPO and PPA buyers.

Weaknesses: Not a standalone installer proposal tool. Enterprise pricing only. The installer rents the lender’s experience, which sits backwards in the brand voice equation.

SurgePV vs Sighten: Different audiences. Sighten serves the lender. SurgePV serves the installer.

Pricing Comparison: The All-in Proposal Stack

The published list price is one thing. The all-in cost across a year, including the design tool the proposal-only platforms need bolted on, is the number that matters. The table below assumes a three-rep residential office doing 220 systems per year.

Stack	Annual cost (3 seats)	Bolt-on design tool needed	Proposal Close 4
SurgePV 5-Team (design + proposal)	$6,495 (5 seats)	None	4 / 4
Aurora Grow + Sales Mode	$14,300 to $18,650	None	4 / 4
Solargraf + HelioScope	$4,644 + $3,564 = $8,208	HelioScope for design	4 / 4
Solargraf + Aurora Essentials	$4,644 + $5,724 = $10,368	Aurora for design	4 / 4
OpenSolar (free)	$42,000+ on financed share	None	3 / 4
Enact Solar	$3,564	Enact design or bolt-on	3 / 4
Pylon	$2,124	None	3 / 4

The pricing math aligns with SEIA’s installer market data. Residential installers who consolidate the design and proposal layers into one license recover roughly 3 to 6 cents per watt in soft cost within twelve months. On a 220-system residential book at an average system size of 8 kW, that is between $53,000 and $106,000 per year on top of the direct license savings. The savings sit on the close-rate side as much as on the license side: a one-percentage-point lift in close rate on a 1,200-lead annual flow is roughly 12 additional installs, which is between $300,000 and $360,000 of installed revenue.

How to Pick the Right Solar Proposal Software

The decision is rarely the longest feature list. The decision is the platform whose close motion matches the team’s binding constraint. Four filters in order.

1. Design tool already paid for. If the team already runs Aurora at the Grow tier, the Sales Mode add-on is the path of least resistance. If the team runs HelioScope or PVsyst, the proposal is a separate decision and the SurgePV or Solargraf path opens up.
2. Volume per year. Under 50 systems per year, OpenSolar wins on cash. Between 50 and 200, SurgePV or Solargraf wins on close-motion ROI. Above 200, the SurgePV bundle or Aurora Sales Mode wins on close-rate compound.
3. Financing partner relationships. If the team has off-network financing partnerships with better customer rates, the OpenSolar captive lender economics break the math. SurgePV and Solargraf let the installer route financing wherever the rate is best.
4. Brand voice control requirement. If the installer’s marketing is invested in the brand voice, the white-label depth matters. SurgePV, Aurora Sales Mode, and Solargraf all ship full white-label. OpenSolar, Enact, and Pylon ship partial white-label that the buyer occasionally notices.

The full best solar proposal software comparison on the SurgePV site walks through the head-to-heads across all seven platforms.

Five Mistakes That Tank Close Rate on the Wrong Proposal Tool

The platform decision matters less than the five operational mistakes that compound across the first quarter of a new proposal tool. Most teams that switch platforms and see no close-rate lift are running into one of these.

1. Sending a static PDF instead of the interactive URL. The single most common failure. The platform supports the shareable URL but the rep emails the PDF export because that is what the muscle memory says to do. Train the reps to send the link only.
2. Routing financing through the platform’s captive lender by default. The captive network is rarely the best customer rate. Run a quarterly check on the off-network partner rates and update the proposal default when the spread crosses 50 basis points.
3. Skipping the brand-voice customization on day one. Default platform copy reads as a generic SaaS template. The buyer feels it. Block half a day in week one to rewrite the proposal copy in the installer’s voice across every section.
4. Letting the e-signature flow live outside the proposal experience. The DocuSign hand-off costs roughly 4 to 9 percent of close rate on Friday-night closes. If the platform supports in-proposal signing, configure it on day one.
5. Treating the proposal as static after the buyer opens it. The strongest close motion is the rep watching the open analytics, calling the buyer 24 hours after the open, and updating the financing view live during the call. Configure the analytics alerts on day one.

The full SurgePV proposal software comparison walks through how each platform handles these five operational details.

How Heaven Designs Helps

Picking the right solar proposal software lifts the close rate. It does not solve the bottleneck most installers hit on the back end of the funnel: a designer who can produce stamped, AHJ-ready permit packets at the pace the proposal tool is closing. That is where the Heaven Designs bench comes in. We are the engineering bench that lets an installer scale install volume past the limit of one in-house designer without hiring a second.

• Solar Permit Design. PE-stamped plan sets in 4 to 7 business days across 38 US states, NEC 2023 compliant, 96.2 percent first-pass AHJ approval.
• Solar Rooftop Detailed Engineering Design. Full IFC pack including GA, SLD, structural, BOQ, and mounting drawings.
• Solar 3D Pre-Design. Sales-stage 3D and shading model delivered in 48 hours. Bid the same week the proposal goes out.
• Download a sample permit packet. A redacted Riverside County residential install pack: SLD, GA, structural, BOQ. NEC 2023, AHJ approved.

For the sales pipeline, lead routing, and rep-performance tracking that sits behind the proposal layer, the QuickEstimate solar CRM pairs with SurgePV through a Zapier connector. The CRM handles the lead lifecycle and the proposal handles the close motion, which keeps the two layers separated cleanly. For a working quote on a state and AHJ where the team is currently running, contact us. Turnaround on a quote is under four business hours.

For deeper reads on the design layer that pairs with the proposal, the cluster covers the solar design software head-to-head, the Aurora Solar alternatives guide, and the HelioScope alternatives guide.

FAQ

What is the best solar proposal software in 2026?

The best all-in-one solar proposal platform in 2026 is SurgePV, because it bundles the proposal layer with the design layer in one license at $1,299 to $1,899 per user per year. Aurora Sales Mode wins on the residential close motion at a higher per-seat price. Solargraf wins on the standalone proposal-first sales rep workflow. OpenSolar wins under 50 systems per year on the free sticker.

How much does solar proposal software cost?

The market sits between $0 sticker (OpenSolar, free with transaction fees on financed deals) and $259 per user per month (Aurora Sales Mode). SurgePV runs $1,299 to $1,899 per user per year and bundles the design layer. Solargraf runs around $129 per user per month and is proposal-only. Pylon runs $59 per user per month for the residential pitch. The all-in loaded cost on a three-seat residential office typically sits between $6,500 and $18,650 per year.

Does solar proposal software include e-signature?

The platforms that win the close rate ship in-proposal e-signature inside the same workspace. SurgePV, Aurora Sales Mode, Solargraf, OpenSolar, Pylon, and Enact all do this. The platforms that punt e-signature to a separate DocuSign or HelloSign hand-off lose roughly 4 to 9 percent of close rate on the Friday-night close window where the buyer’s signature gets lost in their email.

Can solar proposal software show financing comparisons?

The strongest financing modules ship loan, lease, PPA, and cash side by side, with the buyer toggling between views without a sales call. SurgePV, Aurora Sales Mode, and Solargraf all do this. OpenSolar ships financing comparison only inside its captive partner-lender network, which limits the rates the buyer sees. Pylon and Enact ship basic financing with limited side-by-side.

Does solar proposal software work for commercial projects?

Yes for projects up to roughly 1 MW. SurgePV’s commercial solar design workspace ships a commercial proposal with corporate-buyer formatting, lifetime savings, and a financing module the corporate buyer can route to their CFO. Aurora’s Sales Mode commercial flow is residential-skewed. HelioScope ships no native commercial proposal. For C&I above 1 MW, the proposal motion typically combines SurgePV with a custom-branded follow-up deck.

Can the proposal go out on the installer’s own domain?

Yes on SurgePV, Aurora Sales Mode, and Solargraf, all of which ship full subdomain white-label. The installer points a subdomain like proposals.installername.com at the platform, and the buyer experiences the proposal as the installer’s product. OpenSolar, Enact, and Pylon ship partial subdomain support that some buyers notice at the URL bar.

Does solar proposal software integrate with a CRM?

Yes on most platforms, through native connectors or Zapier. SurgePV pairs with QuickEstimate, Salesforce, HubSpot, and the major solar-specific CRMs through a published connector. Aurora ships native Salesforce and HubSpot connectors. Solargraf has a wider but shallower integration list. Pylon and Enact ship lighter CRM integration aimed at solo installers.

What close-rate lift should I expect from switching proposal tools?

A platform switch from a static PDF workflow to a 2026 interactive proposal typically lifts close rate by 3 to 7 percentage points on residential. On a 1,200-lead annual flow that translates to roughly 36 to 84 additional installs per year. On an average system size of 8 kW at a $25,000 system price, that is between $900,000 and $2.1 million of additional installed revenue per year. The proposal layer is the highest-impact software decision a residential installer makes.