Most solar deals do not die because the price was wrong, the panels were bad, or the timing was off. They die because the proposal was wrong. Not dramatically wrong, quietly wrong. A missing subsidy calculation. A generic "Dear Customer" at the top. A PDF that opens sideways on a phone. Small things that accumulate into a customer who "needs more time" and never calls back.
The good news is that every one of these mistakes is fixable in under an hour. The better news is that fixing them does not require a new tool, a designer, or a bigger budget. It requires a checklist.
This post introduces the 9-Point Proposal Audit, a named framework for catching the errors that are silently killing your close rate. Each of the nine points covers a specific mistake, explains why it damages the deal, and gives you the exact fix.
The 9-Point Proposal Audit, Named Framework
Before we go deep on each mistake, here is the full audit checklist at a glance. Run this on every proposal before it leaves your hands.
Each of the nine audit points corresponds to one of the most common solar proposal mistakes in India. The sections below explain the mistake, why it kills the deal, and the exact fix.
Mistake 1, No Subsidy Calculation Shown
Why it kills the deal: The PM Surya Ghar subsidy is worth ₹30,000–₹78,000 per customer. A proposal that does not show this calculation leaves the customer unaware of one of the strongest closing arguments in their favour. Worse, many customers have seen inflated subsidy numbers from competitors, if your proposal shows no subsidy at all, you look like the expensive option even if your net price is lower.
A JMK Research survey (2024) found that 47% of proposals sent by small-to-mid EPCs contained no subsidy breakdown, they showed only the net price without explaining how it was derived. Customers who received these proposals rated their trust in the installer significantly lower than those who received proposals with a transparent subsidy line.
The fix: Show three lines every time, gross cost, subsidy deduction (with the MNRE slab formula shown), and net cost. Make the subsidy amount visually prominent, use a green or bold font for the "−₹78,000" line. The subsidy is working in your favour; do not hide it. For correct slab calculations, see the guide to PM Surya Ghar subsidy slabs.
Mistake 2, No Payback / ROI Section
Why it kills the deal: Solar is a long-term financial decision. Customers do not buy panels, they buy savings. If your proposal does not show how long it takes to recover their investment and how much they save each month, you are asking them to do the maths themselves. Most will not. They will compare your price against a competitor's price and choose the lower number, because that is the only comparison they have.
The fix: Every proposal must include a two-line ROI statement tied to the customer's specific electricity bill: "Based on your current monthly bill of ₹3,500, this system will save you approximately ₹2,700/month. Your payback period is 4.6 years. After that, the system generates free electricity for an additional 20+ years." This is one personalised paragraph. It takes 30 seconds to write and is responsible for more deal closures than any other single element.
Mistake 3, Generic Template with No Customer Name
Why it kills the deal: "Dear Customer" at the top of a proposal signals that the document was assembled in under a minute from a template and that the installer does not consider the lead significant enough to personalise. Customers feel it immediately. It removes the psychological commitment you built during the site visit, suddenly it feels transactional, not consultative.
Trust is the single most important currency in residential solar sales. A wrongly spelled name, or no name at all, spends trust you cannot easily earn back.
The fix: The customer's name, first name and surname, must appear on the cover page or in the first paragraph of every proposal. Spell it exactly as they wrote it. If you collected their information via a lead form, copy the name character-for-character. If you need a reference framework for qualifying leads before the proposal stage, see qualifying solar leads.
Mistake 4, Sent 3+ Days After the Site Visit
Why it kills the deal: The window of maximum customer excitement and minimum competitor interference is 0–48 hours after a site visit. In that window, you are the expert who came to their home, assessed their roof, and understands their electricity bill. After 48 hours, that warmth starts cooling. After 72 hours, competitors have likely visited and sent their own proposals. After a week, the customer has mentally filed your visit under "pending, maybe next year."
CEEW's residential solar survey (2024) found that customers who received a proposal within 24 hours of a site visit were 2.4× more likely to progress to booking than those who waited 3+ days. The difference between winning and losing is often just the clock.
The fix: Set a non-negotiable internal rule: proposals go out the same day as the site visit, or by 9 AM the next morning at the absolute latest. For installers managing multiple visits per day, this means building the proposal on a phone or tablet during travel time. QuickEstimate's mobile app is built for exactly this, the proposal can be generated in under two minutes on-site and sent via WhatsApp before you have left the customer's neighbourhood. See the solar sales follow-up rules guide for the full timing framework.
Mistake 5, PDF Not Mobile-Optimised
Why it kills the deal: Your customer will open the proposal on their phone. Not on a laptop, not on a desktop, on a phone, usually in the evening, often in bed, sometimes while sharing with their spouse. Over 74% of urban Indian consumers primarily access documents on mobile devices (Statista, 2025). A PDF that was designed for A4 print, with 8pt font, six-column tables, and landscape orientation, becomes unreadable on a 6-inch screen without pinching and rotating.
Most customers will not bother. They will close the PDF, set it aside to "look at properly later," and that moment never comes.
The fix: Before sending any proposal, open it on your own Android phone at 100% zoom with no rotation. Ask yourself: can I read every section without zooming in? Are all table columns visible without horizontal scrolling? Is the font at least 11pt? If the answer to any of these is no, fix the layout before sending. Portrait A4 format, single-column layout for dense sections, maximum three columns per table. If you are using Word or Excel to generate proposals, this requires explicit formatting attention on every send. Tools like QuickEstimate generate mobile-first PDFs by default.
| Proposal Element | Mobile-Ready Standard | Common Mistake |
|---|---|---|
| Body text size | ≥11pt | 8pt from Excel default |
| Table column count | Max 3 visible columns | 6–8 columns, cuts off screen |
| Page orientation | Portrait A4 | Landscape (forces phone rotation) |
| File size | <5 MB for WhatsApp | 15–25 MB with uncompressed images |
| Margins | ≥1.5cm all sides | 0.5cm, text clips on phone bezels |
Mistake 6, No EMI Option
Why it kills the deal: This is covered in depth in our guide on showing EMI options in a solar proposal, but the summary is this: most Indian residential customers do not have ₹1.5–2.5 lakh in liquid savings. When a proposal shows only a lump-sum price with no financing option, the customer's only path forward is to either find the cash (which they may not have) or say no. The EMI option creates a third path: say yes and pay monthly.
Field data from QuickEstimate users shows that proposals with an EMI section convert at 28–40% higher rates than identical proposals without one. The EMI section halves "price too high" objections, not because the price changes, but because the frame changes from "can I afford ₹2 lakh?" to "can I afford ₹1,200/month?"
The fix: Add a three-row EMI table to every proposal showing at least two bank options (SBI and Bank of Baroda cover most customers) and one NBFC fallback. Always calculate EMI on the net-of-subsidy principal, not the gross cost. Always include a one-line disclaimer that approval is subject to bank credit assessment.
Mistake 7, Wrong System Sizing for Roof Orientation
Why it kills the deal: An oversized proposal creates a trust problem at two points. First, the customer notices the price is higher than they expected for their roof size. Second, and more damaging, if they proceed and the system underperforms against the stated generation because panels were installed on a suboptimal roof face, they become a complaint, not a reference.
South-facing panels in India generate 100% of rated output; west-facing generates about 85%; east-facing about 80%; north-facing drops to 65%. A proposal that quotes a 3 kW system without accounting for the fact that 40% of the customer's roof faces east will overstate generation by 15–20% and set up a future dispute.
The fix: Record the usable roof area and primary orientation at every site visit. In your proposal, state explicitly: "Proposed 3 kW system is designed for the south-facing rooftop section (approximately 30 sq ft, shadow-free). Generation estimate: 375 kWh/month." This transparency builds trust and eliminates the performance dispute before it starts.
| Roof Orientation | Generation Factor | Monthly Output (3 kW, India avg) |
|---|---|---|
| South-facing (optimal) | 100% | ~375 kWh |
| West-facing | ~85% | ~319 kWh |
| East-facing | ~80% | ~300 kWh |
| North-facing | ~65% | ~244 kWh |
| Mixed (split E+W) | ~88% | ~330 kWh |
Mistake 8, No Expiry Date Creating No Urgency
Why it kills the deal: A proposal with no expiry date is an open invitation to procrastinate indefinitely. The customer puts it in their WhatsApp "to review later" folder, their family discussion never happens because there is no deadline, and three months later they either forgot about it or went with a competitor who followed up with more energy.
Urgency is not manipulation, it is a service to the customer. Solar panel and installation prices fluctuate. Subsidy policy can change. An expiry date communicates a real commercial reality: this quote, at this price, for this system, is valid for a limited period.
The fix: Every proposal must carry a validity line: "This proposal is valid for 14 days from the date of issue (valid until [specific date])." Fourteen days is the standard. It is long enough to allow a family discussion and short enough to create urgency. Place the validity line in bold near the top of the proposal and repeat it in the WhatsApp message when you send the PDF. For the full sequence of urgency-creating touches, see solar sales follow-up rules.
Mistake 9, No Follow-Up Call Booked on Send
Why it kills the deal: Sending a proposal without booking a follow-up call is the most expensive mistake on this list, not because it is the most common, but because it is the most consistently fatal. Without a pre-agreed follow-up, the proposal lands in the customer's WhatsApp, they say "let me think," and the entire relationship depends on whether they think to call you.
They will not call you. Not because they are not interested, because they are busy, because they got distracted, because their electricity board sent a bill the same day and solar slipped their mind. The follow-up is your job, not theirs.
Global sales research consistently shows that 80% of sales require five follow-up contacts after the initial pitch. In Indian residential solar, field data suggests that most conversions happen on the second or third follow-up, not after the proposal send. Yet fewer than 30% of solo installers book a specific follow-up call at the moment of sending.
The fix: At the moment you send the proposal, in the same WhatsApp message, name a specific day and time for the follow-up: "I'll call you on Thursday at 7 PM to answer any questions. If that doesn't work, let me know what time suits you." You are not asking permission to follow up, you are confirming a call. Most customers will not object. The ones who reply "I'll call when I'm ready" are telling you something important about where they are in the buying process.
For the complete follow-up sequence, see solar sales follow-up rules and the solar sales funnel India guide.
The Cost of Each Mistake, Side by Side
| Mistake | Estimated deal impact | Fix time |
|---|---|---|
| 1. No subsidy shown | −35% close rate | 15 min (template) |
| 2. No ROI section | −30% close rate | 20 min (template) |
| 3. No customer name | −20% trust score | 30 seconds/proposal |
| 4. Sent 3+ days late | −58% conversion vs same-day | Process change only |
| 5. Not mobile-optimised | 68% customers can't read it | Template redesign |
| 6. No EMI option | −28–40% conversion | 15 min (template) |
| 7. Wrong system size | Future complaint risk | Site survey discipline |
| 8. No expiry date | Indefinite procrastination | One line in template |
| 9. No follow-up booked | 80% of sales need 3+ touches | Process change only |
EPCs Who Run the Audit vs Those Who Don't
- Proposal sent within 24 hours, every time
- Subsidy calculated correctly on every proposal
- EMI section present, customer always has a monthly number
- Customer name personalised and correct
- PDF opens clean on all phones
- Follow-up booked before proposal leaves the office
- Close rate: 25–35% of proposals sent
- Proposals sent whenever there is time, often 3–5 days post-visit
- Subsidy errors in approximately 47% of proposals
- No EMI, customer stuck on the lump-sum number
- Generic "Dear Customer" or wrong name copied from previous
- PDF unreadable on phone, 6pt font, landscape, 18 MB
- No follow-up plan, leads go cold after one message
- Close rate: 8–15% of proposals sent
What Differentiates a 30% Close Rate from a 12% Close Rate
The data is clear: the difference between a 30% close rate and a 12% close rate is not product quality, brand, or pricing. It is process. JMK Research's annual EPC survey (2024) and Mercom India's EPC study (2025) both arrive at the same conclusion: high-converting EPCs are not better at solar, they are better at proposals.
They send faster. Their documents are personalised. Their maths is right. They follow up with a plan. These are not talent differentiators, they are discipline differentiators. Any installer, from Rohit running a 15-person EPC in Ahmedabad to Imran doing 3–4 installations a month solo in Lucknow, can implement all nine of these fixes in a week.
The solar sales best practices guide covers the full sales discipline framework. For the lead management side of the equation, qualifying solar leads explains how to identify which leads are worth building a high-quality proposal for.
How QuickEstimate Removes All 9 Mistakes from Your Workflow
- The Proposal Generator auto-fills the customer's name from the lead record, the "Dear Customer" error is structurally impossible
- PM Surya Ghar subsidy is auto-calculated from the entered system size using live MNRE slabs, the tiered formula is always correct, never flat-rate
- The ROI section is auto-populated from the customer's electricity bill figure you enter at lead capture, monthly saving and payback period are calculated without manual maths
- The EMI section is built in, SBI, Bank of Baroda, and Tata Capital EMIs auto-calculate from the net-of-subsidy principal with one click
- All proposals are generated as mobile-optimised, portrait A4 PDFs, tested against the most common Android screen sizes in India
- Proposals are generated in under two minutes on mobile, sent same day, every day, with no excuse for delay
- An expiry date is applied to every proposal automatically (configurable 7, 14, or 21 days from send date)
- The WhatsApp Follow-up module creates a follow-up task at the moment of sending, the follow-up is booked before you close the app
- See also: showing EMI options in a solar proposal, handling price objection solar, and when to buy a solar CRM
- Book a demo or download the app, the first 10 proposals are free
What to Do This Week
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Pull your last five proposals and score them against the 9-Point Audit. Give yourself a 0 or 1 for each point. Calculate your score out of 9. If you are below 7, every point you are missing is a direct multiplier on your close rate.
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Fix your proposal template for the three highest-impact mistakes first: subsidy calculation (Mistake 1), EMI section (Mistake 6), and expiry date (Mistake 8). These three changes take under an hour combined and will improve your close rate measurably within the next 10 proposals.
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Change your send-time rule. If you currently send proposals "within a few days," change the rule today to "same day or by 9 AM next morning." Tell your team. Make it a non-negotiable. The 24-hour rule alone will recover more dead leads than any other single change.
Frequently Asked Questions
Which of the 9 mistakes is the most damaging for deal conversion?
Based on field data, the combination of Mistake 4 (late send) and Mistake 9 (no follow-up booked) causes the most closed deals to go silent. A proposal sent three days late with no follow-up plan loses approximately 60–70% of conversion potential relative to a same-day send with a booked call. If you can only fix two things today, fix the timing and the follow-up.
How long should a solar proposal be?
Short. Under 400 words of body text, with the visual weight carried by tables, a savings number, and one clear CTA. The proposal is not a technical document, it is a selling document. Customers make buying decisions on the savings number, the monthly EMI, and whether they trust the installer. None of those things require twelve pages of panel specifications.
Should I send the proposal via email or WhatsApp in India?
WhatsApp first, always. Over 90% of Indian residential customers will open a WhatsApp message within two hours; email open rates for residential customers in India are below 30% within 24 hours. Use email only as a backup for customers who explicitly prefer it, or for commercial buyers where a formal paper trail is needed.
What should the WhatsApp message say when I send the proposal?
Personalise it and include the three key numbers: saving, subsidy, and EMI. Example: "Hi Suresh bhai, here is your solar proposal for 3 kW at your Pune home. Monthly saving: ~₹2,700. Government subsidy: ₹78,000. EMI option from ₹1,010/month. This pricing is valid until [date]. I'll call you Thursday at 7 PM, let me know if another time works better."
How do I handle a customer who has had the proposal for two weeks with no response?
Do not send another copy of the proposal. Instead, send a value message: a photo of a recent installation in their area, a news article about electricity tariff hikes, or a note about a limited-time financing offer. Change the conversation from "have you decided?" to "here is new information relevant to your decision." See the follow-up framework at solar sales follow-up rules.
Should every proposal go through a manager review?
For new sales reps in their first 90 days, yes, every proposal should be approved before sending. After that, use the 9-Point Proposal Audit as a self-certification checklist. Managers spot-check one in every eight proposals for experienced reps. The goal is to build the discipline into the rep's habit, not to create a bottleneck at the manager level.
Can I use one generic proposal template for all customers?
Yes for the structure; no for the content. The template should be fixed, the sections, layout, formatting, and branding never change. The content, customer name, system size, subsidy amount, ROI figures, EMI calculation, electricity bill reference, must be personalised for every single send. A template that requires personalisation is a feature, not a bug. It forces the rep to think about the customer's specific situation before hitting send.
What is the right number of proposals to send per week?
A full-time residential solar sales rep should be sending 8–12 proposals per week. Below 8 usually means the pipeline is thin and lead generation needs attention, see qualifying solar leads for how to improve lead flow. Above 15 proposals per week without a quality system usually means quality is being sacrificed for volume. The 9-Point Audit takes under five minutes per proposal; at 10 proposals per week, that is under one hour per week to maintain top-decile proposal quality.
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