Time is the most expensive resource in solar sales. A rep who spends three hours on a site visit, roof assessment, and proposal for a lead who can't qualify for financing or whose north-facing roof gets 30% yield — that's three hours that could have been a closing conversation with a hot prospect. The qualification framework in this chapter is designed to surface disqualifying information in the first five minutes, not at hour three.
What you'll learn in this chapter
- Why solar qualification is different from other industries
- The 6 questions to ask every prospect in the first 5 minutes
- Roof and site qualification criteria
- Credit and financing pre-qualification approach
- How to handle renters, joint decision-makers, and "just looking" prospects
- A CRM lead scoring framework with point values
Why Solar Qualification Is Different From Other Industries
Most B2C sales qualification focuses on two things: budget (can they afford it?) and authority (can they make the decision?). Solar adds a third dimension that most other industries don't have: physical qualification. A prospect can have the budget, the authority, and strong intent — and still be unable to install solar because their roof is north-facing, 25 years old, and heavily shaded by a neighboring building.
This dual qualification requirement — financial and physical — means the early screening conversation covers different ground than a standard sales qualification call. You're not just asking about budget; you're asking about the property itself.
The cost of skipping qualification
Running a site visit, producing a design in solar design software, completing a solar shadow analysis, and building a proposal takes 3–5 hours of work. For a prospect who turns out to be a renter, has a structurally compromised roof, or can't qualify for financing, that time is entirely sunk. At a fully-loaded cost of €50–€80 per rep hour, a missed qualification costs €150–€300 per bad appointment. For a company doing 40 appointments per month, even a 20% bad appointment rate is €1,200–€2,400 in wasted resource monthly.
Pre-qualification vs appointment qualification
Pre-qualification happens before any appointment is scheduled — typically on the initial phone call or at the door. Appointment qualification happens during the in-home visit. The goal of pre-qualification is to eliminate obvious disqualifiers before spending field time. Appointment qualification goes deeper: assessing the actual roof, discussing financing in detail, and verifying decision-maker status.
Pro Tip
Use satellite imagery to pre-screen roof orientation and obvious shading before the phone qualification call. Google Maps or dedicated solar tools can tell you within 60 seconds whether a roof is worth pursuing — before a single conversation happens.
The 6 Questions to Ask Every Prospect in the First 5 Minutes
These six questions, asked in a natural conversational sequence, surface every major disqualifier before the appointment is scheduled. They work in-person (D2D), on the phone, and in a web form pre-screening flow.
Question 1: "Do you own the property?"
This is the first question because it's the fastest disqualifier. A tenant cannot sign a solar installation contract for a property they don't own in virtually all European jurisdictions. Phrasing matters: "Do you own the property, or is it rented?" is more natural than "Are you the homeowner?" which can feel presumptuous. If they rent: disqualify immediately and pivot to community solar as an alternative worth exploring.
Question 2: "Is the roof less than 15 years old?"
Panels carry a 25-year performance warranty. Installing on a 20-year-old roof means the customer will likely need a roof replacement mid-system-life, which requires removing and reinstalling the panels at cost. A roof under 15 years old is generally safe to install on. Between 15–25 years, recommend a roof assessment before proceeding. Over 25 years, the conversation shifts to whether a roof replacement should happen first — which is a separate sales conversation, not a disqualifier, but it extends the timeline.
Question 3: "What's your average monthly electricity bill?"
The economics of solar depend on how much electricity a household buys from the grid. Below €80/month, the return on a residential system becomes marginal in most European markets — payback stretches beyond 15 years, which is hard to sell. Below €50/month, the economics rarely work for a standard rooftop system. Above €120/month is the sweet spot: payback is typically 7–10 years, the monthly savings are meaningful, and the ROI conversation is straightforward. Ask for the average bill, not the summer or winter — seasonal variation is high in Europe.
Question 4: "Is the roof south-facing, or does it have east/west exposure?"
In Europe, a south-facing roof captures maximum irradiance. East/west split systems work well — they produce at different times of day, which can improve self-consumption. A north-facing roof in northern Europe (UK, Germany, Netherlands, northern France) produces so little that the economics typically don't work. In southern Europe (Spain, southern Italy), a north-facing roof can still be marginal-to-viable depending on pitch and irradiance levels. This question is easier to phrase as: "Which direction does the main roof face?"
Question 5: "Have you had any issues with your credit in the last three years?"
This question only applies to prospects who need financing. For cash buyers, skip it. The framing matters: "Most of our customers choose to finance — have there been any credit events in the last few years I should know about so I can point you toward the right financing options?" This opens the conversation without being intrusive. The goal is to identify prospects who may need specialist finance products rather than standard solar loans — not to disqualify them outright.
Question 6: "Is your partner involved in major home decisions?"
A solar installation is a €8,000–€20,000 decision. In households with two decision-makers, presenting to only one of them produces a predictable outcome: "I need to talk to my partner" at the point of close. This is an avoidable objection. Ask this question early and insist — gently but firmly — on having both decision-makers present for the proposal meeting. "I find it really works best when I can answer questions for both of you at the same time — can we find a time when you're both available?"
Scoring the responses
| Score | Interpretation | Action |
|---|---|---|
| 6 / 6 | Hot lead — all signals positive | Set appointment immediately |
| 4–5 / 6 | Warm — one or two soft concerns | Educate on the specific concern, then re-qualify |
| Under 4 | Disqualify or long-term nurture | Polite disqualify or tag for 6–12 month nurture |
Roof and Site Qualification Criteria
The six-question phone screen surfaces obvious disqualifiers. The roof assessment — which happens either via satellite pre-screen or during the in-home visit — goes deeper into physical suitability.
Roof age
Under 15 years: straightforward. 15–25 years: recommend a roof inspection (can be positioned as a free service from a partner roofer). Over 25 years: a roof replacement conversation should precede the solar conversation. Some installers partner with roofers specifically to handle this: the roofer does the replacement, the solar company does the installation, and both companies benefit from the referral relationship.
Roof material
Tile, metal, and asphalt shingles are standard — any installer should be able to handle these. Thatch and glass roofs require specialist mounting and are typically not viable for standard residential solar. Flat roofs use ballasted systems, which add cost and reduce yield slightly (due to suboptimal tilt). Flat commercial roofs, however, are often the best commercial solar sites because of their sheer area.
Orientation and pitch
South ± 45° is the optimal range for European installations. East/west systems are good options for improving self-consumption — they capture morning and evening production rather than the midday peak. Roof pitch between 20° and 45° is ideal; flat roofs use ballasted tilting structures; pitches over 60° require custom mounting and increase installation cost.
Shading
Shading is the most common reason a physically acceptable roof performs poorly. Trees, adjacent buildings, chimneys, and dormer windows all cast shadows that reduce yield. A solar shadow analysis quantifies shading losses by hour across the year — giving you a real production figure for the specific site rather than a generic estimate. For any roof with visible obstructions, run this analysis before building the proposal.
Structural load
Standard residential roofs are designed to handle 1.5–2.0 kN/m² of distributed load. Standard solar panels add approximately 0.15 kN/m². For most modern construction, there is no issue. For older buildings, very old timber structures, or any sign of sagging or deformation, a structural assessment should precede installation. This is especially relevant in Central European markets where older building stock is common.
Key Takeaway
Use solar shadow analysis software to quantify shading losses before any proposal is built. A roof that looks fine visually may lose 25–40% of production to partial shading — which changes the economics entirely and can turn a viable prospect into an unviable one.
Credit and Financing Pre-Qualification
Most solar installations in Europe are financed. Understanding a prospect's financing situation early avoids the worst-case scenario: a completed proposal, a ready-to-sign customer, and a financing rejection that kills the deal at the last stage.
When credit pre-qual matters
Cash buyers don't need a credit check. But cash buyers are a minority. For any prospect indicating they'd want to finance, a pre-qualification conversation is appropriate from the first contact. The goal is not to verify their creditworthiness — that's the lender's job — but to surface any obvious concerns early so you can route them to the right product.
Soft credit checks
Many solar finance providers in Europe now offer soft pre-qualification that doesn't affect the prospect's credit score. Positioning this as a benefit: "We can do a quick pre-check that tells you exactly what payment option you'd qualify for, with no impact to your credit score — most customers find it useful to know before the design meeting." This frames the pre-qualification as a service rather than a gate.
The financing conversation framing
"Most of our customers finance because the monthly payment is less than what they currently pay for electricity — would you like to see what that looks like for your situation before we even design the system?" This approach opens the financing conversation naturally and positions the financial modeling as a benefit, not a bureaucratic requirement.
Country-specific thresholds
German KfW Programme 270 (solar energy storage) requires standard creditworthiness with no recent insolvencies — specific credit score thresholds are not published but rejection rates are low for employed applicants. UK green finance products (often from specialist lenders like Ecology Building Society or Tridos) typically require a credit score above 600–650 (Experian scale). Italian Ecobonus requires tax capacity to absorb the deduction — prospects with very low taxable income may not benefit from the incentive structure.
BNPL and fintech solar finance
Buy-now-pay-later style solar financing products are emerging in European markets. These typically have higher interest rates but lower approval thresholds, making them useful for prospects who don't qualify for standard solar loans. Knowing which finance products you can offer at different credit profiles significantly expands your addressable market.
Homeowner vs Renter: How to Handle It
Renters come up regularly in solar canvassing and inbound lead flows. The right response is a quick, respectful disqualify with a positive alternative — not a dead end.
Standard renter: disqualify and pivot
"Unfortunately, solar installation requires property ownership since it's a permanent modification to the structure. But there's actually a growing option for renters — community solar programs let you subscribe to a share of a solar installation and get credits on your electricity bill. I can send you some information on that if you're interested." This exits the conversation cleanly while leaving the prospect with a useful alternative.
Long-term renters
Some landlords will install solar if a long-term tenant (5+ year lease) is present and willing to commit. The landlord increases property value, the tenant gets lower bills, and the installer gets a deal. This requires a separate sales conversation with the landlord — which requires the tenant's introduction. Worth exploring if the tenant is enthusiastic and the relationship with the landlord is good.
Landlord-installed solar
Particularly relevant for commercial landlords and multi-tenant residential buildings. The landlord installs the system and either retains the electricity savings (reducing operating costs for common areas) or passes savings to tenants. This is a B2B sales conversation, not a B2C one. Keep a separate pipeline for landlord prospects.
Social housing
Local authorities and housing associations managing social housing stock are a distinct B2B opportunity. Many have decarbonization commitments and access to public funding for solar. The sales process is longer and more bureaucratic but the contract values are high — 50–500 units at a time.
The "Just Looking" Prospect: Warm Nurture Framework
Not every qualified prospect is ready to move now. Some genuinely intend to install solar in the next 12–24 months but aren't there yet — they're in research mode. These prospects are worth keeping in a structured nurture track rather than discarding.
Who is actually worth nurturing
A "just looking" prospect who scores 5–6 on the qualification framework is worth nurturing. They own the property, have a viable roof, and pay a meaningful electricity bill — they're qualified on the facts. The timing just isn't right. A 12-month nurture sequence for this person has a meaningful conversion probability.
CRM tagging
Tag by nurture timeline: "nurture-3month", "nurture-6month", "nurture-12month". Set a reminder to re-contact at the appropriate date. The re-contact message should reference a specific trigger: an incentive update, an electricity price increase, or a seasonal prompt ("summer is the best time to book installation before the autumn queue builds up").
Monthly touch sequence
One email per month is enough for a long-cycle nurture. Content that works: government incentive updates for their country, electricity price updates (particularly after price cap changes or tariff announcements), and short case studies of neighbors or similar households who installed. The goal is to be visible and useful — not to pressure.
Re-qualify triggers
Certain events signal that a previously cool prospect has warmed up: a large electricity bill arrives (bill shock), a neighbor installs solar (social proof), or a significant incentive is announced (urgency). Any of these events should trigger a re-qualification call, not just the scheduled nurture email. Monitoring your CRM for these triggers — or asking prospects to contact you when they happen — is a systematic way to capture timing.
CRM Lead Quality Scoring for Solar Teams
A numerical lead scoring system lets you prioritize follow-up effort systematically. Instead of working through leads in the order they came in, you work through them in order of conversion probability.
| Qualification Criteria | Points |
|---|---|
| Owns property | +20 |
| Roof under 15 years old | +15 |
| Monthly electricity bill over €120 | +20 |
| South-facing or E/W roof orientation | +15 |
| Good credit / cash buyer | +15 |
| Both decision-makers available for meeting | +15 |
Scoring bands:
- 85–100: Hot lead — schedule appointment within 24 hours, prioritize rep time
- 60–84: Warm lead — address the specific gap (roof age concern, financing question) before scheduling
- Under 60: Nurture or disqualify — add to drip sequence or exit pipeline
Adding bonus points
The basic framework can be extended with bonus criteria: +10 for referred by existing customer (referrals close at higher rates), +5 for bill over €180/month (stronger economics), +5 for previously requested a quote but didn't proceed (demonstrated intent). Adjust point values based on your own closed-deal data over time — the framework is a starting point, not a fixed rule.
Implementing in CRM
Most solar CRMs support custom lead scoring fields. If yours doesn't, a simple custom field with the numeric score works fine. The key discipline is scoring every lead at point of entry — not retroactively. Within 24 hours of first contact, every lead should have a score and be routed to the appropriate follow-up sequence.
Design the System Before the Appointment — Impress at First Meeting
With SurgePV, you can run a preliminary solar design from satellite data before the site visit — arriving at the appointment with a rough layout and yield estimate already prepared. Prospects are impressed every time.
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Frequently Asked Questions
How do you qualify solar leads quickly?
Ask six questions in the first five minutes: Do they own the property? Is the roof under 15 years old? What's their average monthly electricity bill? Is the roof south-facing or has east/west exposure? Have they had credit issues in the last three years (for financed systems)? And is their partner involved in major home decisions? Score the responses — 6/6 means set the appointment immediately; under 4/6 means politely disqualify or move to a long-term nurture track.
What questions should a solar sales rep ask?
The six essential qualification questions cover property ownership, roof age, electricity bill size, roof orientation, credit situation (for financed deals), and decision-maker availability. Beyond these, useful discovery questions include: Have you gotten other solar quotes? What's your timeline? What's most important — lowest upfront cost, best long-term return, or fastest payback? These answers shape both qualification and the framing of the eventual proposal.
How do I know if a roof is suitable for solar?
A suitable residential solar roof is typically under 15 years old, south-facing (or east/west split), pitched at 20–45 degrees, made from standard materials (tile, metal, asphalt), free from significant shading by trees or buildings, and structurally sound. A solar shadow analysis quantifies shading losses before the site visit, allowing early disqualification of heavily shaded sites.
What credit score is needed for solar financing?
Requirements vary by lender and country. German KfW solar loans require standard creditworthiness with no recent insolvencies. UK green finance lenders typically require a credit score above 600–650 (Experian scale). Many European solar finance products now offer soft pre-qualification checks that don't affect the prospect's credit score — use these early in the sales process to avoid investing in appointments that can't be financed.
How do you handle renters who want solar?
Renters cannot install solar on properties they don't own in most cases. Disqualify politely and pivot to community solar as an alternative — community solar schemes allow renters to subscribe to a share of an off-site solar installation and receive credits on their electricity bill. Keep renters in a long-term nurture track — they may become homeowners. For long-term renters with supportive landlords, a landlord-installation conversation may be worth initiating.
From Qualified Prospect to Closed Deal
Once you've qualified the lead, the next step is a proposal that closes. SurgePV connects your solar software design directly to a client-ready proposal — system layout, financial analysis, and incentives in one workflow.
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About the Contributors
Co-Founder · SurgePV
Nirav Dhanani is Co-Founder of SurgePV and Chief Marketing Officer at Heaven Green Energy Limited, where he oversees marketing, customer success, and strategic partnerships for a 1+ GW solar portfolio. With 10+ years in commercial solar project development, he has been directly involved in 300+ commercial and industrial installations and led market expansion into five new regions, improving win rates from 18% to 31%.