The Complete Indian Solar Installer

Most Indian solar installers run their business on a dangerous combination of WhatsApp, a shared Excel sheet, and memory. That works for your first 5–10 projects a month. Beyond that, things fall apart: proposals get re-quoted at wrong prices, leads go cold because nobody followed up, and DISCOM documentation sits half-filled in someone's Downloads folder.

The good news: a functional software stack for an Indian solar EPC doesn't require enterprise SaaS or a ₹5 lakh implementation. It requires 5 layers, each solving a specific job, and for most small-to-mid EPCs, 2–3 of those layers can be covered by a single India-built tool.

This guide covers each layer with specific tools, honest trade-offs, and ₹ costs. It's written for Rohit, the 12-person EPC owner who has probably tried Zoho CRM, abandoned it after 2 months, and is now wondering what Indian-market-specific tools actually exist. It's also relevant to solar dealers managing multiple sub-installers who need their partners standardised on a single stack.

The 5-Layer Solar Tech Stack, overview

The framework organises every software need for an Indian solar installer into five distinct jobs:

1. 1

   Proposal Layer, Quote, generate, and deliver proposals

   The job: turn a lead's name, address, and system size into a professional PDF with PM Surya Ghar subsidy calculated, payback period shown, and your brand visible.

2. 2

   CRM Layer, Track leads from first contact to commissioning

   The job: know where every lead is in your pipeline, who is following up, and which deals need action today.

3. 3

   Site Survey Layer, Capture roof data accurately in the field

   The job: measure roof area, assess shading, photograph the meter and roof structure, and feed data directly into the proposal, no re-entry.

4. 4

   Finance Layer, Customer EMI, bank loan facilitation, GST billing

   The job: help customers finance solar with a bank loan or EMI; generate GST-compliant invoices; manage your own working capital.

5. 5

   Compliance Layer, DISCOM documentation, PM Surya Ghar portal, net metering

   The job: generate DISCOM-ready documents, track inspection status, and upload subsidy applications without document errors that cause rejection.

Layer 1, Proposal tools for Indian solar installers

The proposal is the first physical thing a prospect sees from your company. Most Indian solar leads are decided within 48 hours of receiving a proposal. If yours looks handwritten, takes 2 days to arrive, or has the wrong subsidy number, you've already lost.

What the best proposal tools for India must do:

• Calculate PM Surya Ghar subsidy automatically (₹30,000 for 1 kW, ₹60,000 for 2 kW, ₹78,000 for 3 kW and above, per the PM Surya Ghar National Portal)
• Show payback period and generation forecast in Indian units (units/day, ₹ savings/month)
• Generate a branded PDF deliverable via WhatsApp in under 5 minutes
• Work on Android phone (90%+ of Indian sales teams use Android)
• Support custom pricing and equipment selection

The honest verdict: Aurora Solar is exceptional for 3D roof modelling and shade analysis on complex commercial projects. For 95% of Indian residential and small commercial work, it's overkill, expensive in USD, and has no PM Surya Ghar awareness. QuickEstimate was built specifically for Indian conditions, its Proposal Generator outputs a subsidy-ready PDF in under 2 minutes, works on any Android phone, and doesn't require a laptop or stable internet to function in the field.

For more on what makes a strong solar proposal, see our guide on how to write a solar proposal in India and solar proposal best practices.

Layer 2, CRM tools for solar lead tracking

A CRM (Customer Relationship Management) system for solar does one job: make sure every lead gets followed up, every proposal gets a response, and every closed deal gets properly handed to the installation team without a phone call chain.

What Indian solar CRMs must handle:

• Lead source tracking (Facebook Ads, IndiaMART, referral, DISCOM camp)
• Pipeline stages that map to solar sales: Inquiry → Site Visit → Proposal Sent → Negotiation → Closed → Under Installation → Commissioned
• Mobile-first interface (your sales team is in the field, not at a desk)
• WhatsApp integration (follow-up via WhatsApp is the default in India)
• Multi-user with role-based access (owner sees all, sales rep sees their own leads)

The global CRM leaders (Salesforce, HubSpot, Zoho CRM) are built for generic B2B sales cycles. They can be configured for solar, but the solar-specific pipeline stages, PM Surya Ghar subsidy tracking, and WhatsApp-first communication model need custom setup. Most Indian EPCs who try Zoho CRM abandon it in 6–8 weeks because the configuration overhead never gets completed.

QuickEstimate's Pipeline Management is pre-built for solar stages, no configuration required. Lead Capture pulls in leads from Facebook, IndiaMART, and web forms automatically. The margin improvement from consistent follow-up compounds fast: the difference between a 15% and 25% close rate on 50 monthly leads is 5 extra projects, which at ₹1.75 L each is ₹8.75 L additional revenue.

Layer 3, Site survey tools for field data collection

The site survey is where most EPC errors originate. An installer visits a roof, takes rough measurements, photographs the meter with a personal WhatsApp message, and then... someone at the office tries to reconstruct the system design from incomplete notes. Errors in roof area, shading, or meter capacity then cause proposal re-work and installation surprises.

What a good site survey tool does:

• Structured form with required fields (roof dimensions, roof type, shading assessment, meter capacity, existing load)
• Photo capture with automatic naming and project linkage
• GPS tagging of the installation site
• Direct data flow into the proposal tool (no re-entry)
• Works offline with sync when connected

For Indian EPCs, the most practical Layer 3 option is a Google Form with photo upload linked to a Drive folder, free, works on any Android phone, and keeps surveyor data in one place. The limitation is no direct integration with proposal tools. Dedicated site survey apps like SolarNexus (US-based) or Sunbase exist but are not India-market-tuned. Most Indian EPCs doing 20+ projects/month build a custom Zoho Form or a Microsoft Forms workflow.

Layer 4, Finance tools for customer loans and GST billing

Solar is a ₹1–10 L purchase. Very few Indian homeowners pay cash. The close rate on leads where you present a finance option is meaningfully higher than on straight-cash proposals, CEEW (Council on Energy, Environment and Water) research on residential solar adoption notes that access to credit is one of the top three barriers for homeowners.

What the Finance Layer covers:

Customer loan facilitation: Banks and NBFCs partnered with solar in India include SBI's PM Surya Ghar loan programme, IREDA green energy loans, HDFC Bank's rooftop solar product, and various state-level schemes. Many EPCs are registered as channel partners for one of these lenders and earn a referral fee (₹2,000–5,000 per sanctioned loan) while helping their customer get financed.

GST billing: Solar system installation attracts GST. As of the last update from CBIC, solar panels and associated equipment fall under the 5% GST rate for on-grid systems (12% for storage systems). Generating correct GST invoices requires an accounting tool or GST-compliant billing software.

Tools to consider:

• Zoho Books / Tally Prime: GST invoicing, accounts payable/receivable, e-invoice generation for projects over ₹5 Cr turnover. Cost: ₹999–2,499/month.
• ClearTax / GSTN portal: GST filing and invoice generation at zero cost for simpler setups.
• Excel with GST formulas: Still used by 60%+ of small EPCs, functional for 10–20 projects/month, breaks down at scale. See our guide on managing tax with Excel for solar businesses for specific templates.

Layer 5, Compliance tools for DISCOM and PM Surya Ghar

The compliance layer is uniquely painful for Indian solar EPCs. Every state has a different DISCOM, each DISCOM has different net-metering forms, and PM Surya Ghar adds a separate portal with its own documentation requirements. Getting this wrong delays project commissioning by 30–90 days, and delays mean your customer calls you every week.

What the Compliance Layer covers:

• DISCOM net-metering application forms (state-specific)
• PM Surya Ghar vendor portal upload of commissioning documents
• Inspection tracking (DISCOM inspection → BESCOM / MSEDCL / DGVCL sign-off)
• Subsidy disbursement status tracking for customer communication

Available tools:

Most Indian EPCs don't have purpose-built compliance software. The current best practice is a combination of:

1. State DISCOM portals: Each DISCOM has an online portal for net-metering applications. Examples: MSEDCL (Maharashtra), BESCOM (Bengaluru), DGVCL (Gujarat). Status updates and document upload happen here.
2. PM Surya Ghar National Portal: pmsuryaghar.gov.in for vendor registration, application tracking, and commissioning document upload.
3. Google Sheets compliance tracker: A shared sheet where each project has a row tracking DISCOM application date, inspection date, net-metering meter installation, and subsidy status. Crude, but functional for sub-30-project teams.

QuickEstimate's pipeline stages include post-sale tracking through installation and commissioning, which allows you to track DISCOM status as a pipeline stage, even without a dedicated compliance software layer. For EPCs doing PM Surya Ghar projects, this removes the need for a separate spreadsheet. The full guide to PM Surya Ghar vendor registration covers the portal steps in detail.

The full Indian solar installer stack, costs and coverage

Let's assemble the complete stack with realistic costs for a 15-person Indian EPC doing 25–40 projects/month:

Total monthly cost for a functional 5-layer stack: ₹2,750–4,250 per month for a 3-user EPC team. That's less than the cost of one poorly-executed IndiaMART subscription and far less than the revenue you lose to proposal delays and cold leads.

What to think about before adding each layer

New tooling creates adoption overhead. Teams that try to implement 5 layers at once rarely stick to any of them. A better sequence:

Month 1–3: Layer 1 (proposal) + Layer 2 (CRM). These two are the highest-use changes for any EPC under 30 projects/month. Standardised proposals reduce rework. Pipeline visibility prevents lead leakage. QuickEstimate covers both natively, start with the free plan to confirm team adoption before upgrading.

Month 4–6: Layer 3 (site survey). Once Layer 1 and 2 are running, you'll start seeing where the next bottleneck is. For most EPCs, it's survey data quality.

Month 6+: Layer 4 (GST billing, loan integration). Only matters once your transaction volume makes manual invoicing painful.

Layer 5 (compliance) should be built as you grow, start with a shared Google Sheet, graduate to structured tracking inside your CRM pipeline stages as project volume increases.

How QuickEstimate fits your solar software stack

QuickEstimate was built specifically for the Indian solar market. It wasn't adapted from a generic CRM or a Western solar tool. That means the business logic, PM Surya Ghar subsidy slabs, DISCOM pipeline stages, WhatsApp-first communication, dealer/partner hierarchy, is already present, not something you need to configure.

• Proposal Generator, PM Surya Ghar subsidy auto-calculated for every system size; branded PDF in under 2 minutes; send directly via WhatsApp.
• Pipeline Management, solar-specific pipeline stages pre-built (Inquiry → Site Visit → Proposal Sent → Closed → Commissioning); team-level visibility for owners.
• Lead Capture, auto-import from Facebook Lead Ads, IndiaMART, and web forms; no manual entry.
• Sales Reports, rep-level performance, close rates by channel, revenue pipeline, weekly or monthly.

The dealer management context from the solar dealer empanelment guide maps directly: dealer operators can give each sub-installer a login under their account, standardise the proposal brand, and see partner-level pipeline in one view. For deeper context on why EPCs move from spreadsheets to dedicated tools, the India solar business trends report covers adoption patterns and ROI data.

What to do this week

1. Audit your current stack against the 5 layers. Draw a simple table: which layer, which tool (if any), and whether it's actually being used by your team. Be honest about Layer 2, if your CRM hasn't had a log entry in the last 7 days, it's effectively unused.

2. Fix the proposal layer first. Install QuickEstimate, create a 3 kW sample proposal for your city, and time how long it takes. If it's over 5 minutes, you have your baseline. Now send it to a prospect and track what happens. Start free at quickestimate.co.

3. Set up a basic site survey form for Layer 3. Even a Google Form with 8 fields (customer name, address, roof type, roof area, shading, meter capacity, existing monthly bill, photos) eliminates 80% of proposal re-work. Build it in 30 minutes and send the link to your field team today. See more on optimising your full workflow in the India Solar Sales Report.

Frequently asked questions

What software does a solar installer in India actually need?

At minimum, you need two things: a proposal tool and a lead tracking system. The proposal tool should generate PM Surya Ghar subsidy-ready PDFs in under 5 minutes on an Android phone. The lead tracker should show you every lead's stage and follow-up status in a single dashboard. QuickEstimate covers both. As you scale past 20 projects/month, add a site survey form (Layer 3) and GST billing software (Layer 4).

Is Zoho CRM good for Indian solar installers?

Zoho CRM is a capable tool but it's built for generic B2B sales teams. It has no built-in knowledge of PM Surya Ghar subsidy slabs, DISCOM pipeline stages, or WhatsApp-first communication. Most Indian EPCs who try Zoho CRM abandon it within 8 weeks because the configuration to make it solar-specific is never completed. India-built tools like QuickEstimate are pre-configured for solar workflows and require no setup.

What does solar proposal software cost in India?

India-built solar proposal tools range from free (QuickEstimate's free plan, which includes 10 proposals/month with no card required) to ₹6,999/user/year for Pro plans. Western tools like Aurora Solar or Solargraf cost $150–400/month (₹12,000–33,000) and have no India-specific features. For most Indian EPCs, the cost of proposal software is lower than a single hour of proposal rework per week.

Do I need a separate tool for PM Surya Ghar subsidy calculation?

No. QuickEstimate's Proposal Generator includes PM Surya Ghar subsidy auto-calculation based on the MNRE slab schedule. For manual calculation, the subsidy is ₹30,000 for 1 kW, ₹60,000 for 2 kW, and ₹78,000 for 3 kW and above (central subsidy; state top-ups vary). See the PM Surya Ghar subsidy slabs guide for the full schedule.

What is the best CRM for small solar companies in India?

For EPCs doing 5–50 projects/month, QuickEstimate is the only India-built solar CRM with PM Surya Ghar subsidy, WhatsApp follow-up, and a mobile-first Android interface in a single product. Larger EPCs scaling to 50+ projects/month and needing multi-branch reporting might evaluate Zoho CRM with a solar-specific configuration, but expect 60–90 days of setup time.

How do I track DISCOM approvals and commissioning status?

Most Indian EPCs use a Google Sheet or the DISCOM portal itself for commissioning tracking. Each state DISCOM (MSEDCL in Maharashtra, BESCOM in Karnataka, DGVCL in Gujarat) has an online portal where application status is updated. QuickEstimate's pipeline stages can be customised to include post-sale stages like DISCOM Application Submitted, Inspection Scheduled, and Commissioned.

What is the cheapest way to build a solar software stack in India?

The lowest-cost functional stack uses: QuickEstimate free plan (proposal + CRM for 10 projects/month at ₹0), Google Forms for site survey (₹0), and the government GST portal for invoicing (₹0). Total monthly cost: ₹0. As you grow past 10 projects/month, upgrade to QuickEstimate Pro (₹6,999/user/year) and add Zoho Books or Tally for GST billing.