Proposals?Invoices?solar8n.
Make solar proposals and GST invoices in minutes, and keep every lead, call and site visit in one place.
ProposalsGST invoices
- Lead tracking
- Solar proposals
- GST invoices
- Credit notes
- Payment records
- PM Surya Ghar subsidy
- Savings and payback
- Your own price list
- Team roles
- Branches
- WhatsApp sharing
- PDF downloads
THE WHOLE JOURNEY
From first call to final payment
1A lead comes inFrom your website, a call or a walk-in. One phone number is one lead, so nobody is chased twice.
Sample
MR
Meena RaoBaner, Pune · 3 kW rooftop · ₹4,000 bill
NewContactedSite visitProposal sentWon
Follow-up today, 4:30 pm
This number is on one lead only
2You send a proposalEnter the kW. Prices, GST, subsidy and savings fill in, and a branded proposal goes out on WhatsApp.
Sample
Proposal SP-2041Accepted
System
5.4 kW
Price
₹3.0 L
Subsidy
₹78,000
Saves every month
₹4,600
Payback
4 years
Send on WhatsAppPDF
3It becomes a GST invoiceWhen the customer accepts, raise the tax invoice, or one for each milestone. CGST, SGST or IGST is worked out.
Sample
Tax invoice INV-2627-0012
5 kW on-grid inverter₹58,000
10 × 540 W panels₹1,62,000
Installation and net metering₹80,000
CGST 2.5% + SGST 2.5%₹15,000
Total₹3,15,000
Advance 40%Installation 50%Commissioning 10%
4You record the paymentAdd each payment as it arrives. Balances, part-paid and overdue update by themselves.
SamplePayments for INV-2627-0012
Advance · UPI12 Oct₹1,26,000
Installation · Bank transfer28 Oct₹1,57,500
Paid ₹2,83,500 of ₹3,15,00090%
Balance due₹31,500
BUILT FOR SOLAR
Everything a solar business keeps in five different places
20 proposal designs, in your coloursYour logo, brand colour and terms on every one. Pick a default, change it any time.


See all proposal designs →




GST done rightCGST and SGST, or IGST for another state, worked out line by line, with HSN codes and the amount in words.
CGSTSGSTIGSTHSN / SACAmount in words
Taxable value₹3,00,000
CGST 2.5% + SGST 2.5%₹15,000
Total₹3,15,000
Leads that never double upOne phone number or email is one lead. Add it twice and solar8n tells you who already has it.
Rajesh MehtaSite visit
Anita DesaiProposal sent
Patil AgroNegotiation
Send it where customers areA link on WhatsApp, an email, or a PDF. You see when the customer opens it.
WhatsAppEmailPDFLink
Your team, your rulesGive each person a role and choose what that role can do. Keep branches apart.
SeSales executiveLeads, proposals
AAccountantInvoices, payments
TTelecallerLeads only
Credit notes, not editsMade a mistake on an invoice? A credit note fixes it and the original stays untouched.−
Invoice
₹3,15,000Credit note
₹15,000Subsidy and savings, includedThe PM Surya Ghar estimate, yearly generation and payback, on every proposal.
Leads from your websiteSend enquiries straight into Leads with a private key.
POST /api/leads/intake
x-api-key: s8_••••
{ "name": "Rajesh",
"phone": "98220…" }TRY IT
Show a customer their savings before you leave the gate
Enter a monthly bill. solar8n picks a system size and works out the subsidy, what the customer pays and when it pays back. Every proposal has these numbers.
₹5,000
₹1,000₹25,000
Your customer's proposalEstimate
System size
6 kW
System price
₹3,60,000
Central subsidy
− ₹78,000
Customer pays
₹2,82,000
Saves every month
₹5,110
Pays back in
4.6 years
25-year savings ₹14.4 LCO₂ avoided 7.2 t / year
An estimate with round example prices. Your own price list sets the real ones.Make this proposal













































































PRICING
One plan. Unlimited proposals and invoices.
Start with a 7-day free trial, no card needed. Then pay monthly or every three months. Prices exclude 18% GST.
Free trial
See it with your own customers
₹0for 7 days
- Everything in paid plan
- No credit card
- Keep your data
Monthly
Pay month by month
₹7,000+ GST / month
- Unlimited proposals
- Unlimited GST invoices
- All 20 designs
Best value · save ₹6,000
Quarterly
Pay every 3 months and save
₹15,000+ GST / 3 months · ₹5,000 a month
- Unlimited proposals
- Unlimited GST invoices
- All 20 designs
Everything is included in both plans
- Unlimited proposals
- Unlimited GST invoices
- Credit notes included
- 20 branded designs
- 100% your branding
- No watermark
- Team and branches
- PDF and share links
Pay by UPI, card or net banking through Razorpay. Plans are paid in advance and do not renew by themselves. A GST invoice is issued for every payment.
QUESTIONS
Things people ask before they start
Not here? Ask us on WhatsApp, or read all the answers.
Yes. Residential proposals apply the central subsidy slabs automatically, and you can add state subsidies or turn them off for commercial projects.
See your first proposal built live
Book a 20-minute demo. We'll create a real proposal and invoice using one of your customers' bills.