Free Solar Panel Installer Invoice Template & Generator
Build solar installation invoices for panel mounting, electrical connections, inverter setup, and permitting coordination.
Currency
Amount already received from client
Live Preview
Thank you for your business
What should a solar installer put on an invoice?
Solar invoices set out the system installed: the panels, the inverter, mounting, and labour, with the system size in kilowatts. Note permits, inspection, and grid connection, and show any battery storage separately. Record the address and the warranty so the customer has a clear record of the system fitted to the property.
Your invoices need to show the system size in kilowatts, the panel brand and model numbers, and inverter specs. Include the permit numbers and interconnection application reference. Break out the equipment costs separately from labor and electrical work. Most customers need this detail for their financing, rebate applications, and tax credit paperwork. The utility company will ask for it too when they approve the system.
You will want a deposit upfront, usually 30-50% when the contract is signed. Bill another 40% when the panels are installed but before inspection. Save the final 10-20% for after the system passes inspection and gets permission to operate. Some installers do a simple 50/50 split instead. Either way, tie payments to completion milestones, not calendar dates. Weather and permit delays happen.
Always attach photos of the completed installation to your final invoice. This speeds up payment because the customer can see the finished system and feels confident signing off. It also protects you if questions come up later about what was actually installed. Include the meter reading from day one of operation if you have it.
Typical line items
- Solar panels (by system size in kW)
- Inverter and electrical components
- Mounting and racking hardware
- Installation labour
- Battery storage (optional)
- Permits, inspection, and grid connection
- System monitoring setup
- Workmanship and equipment warranty
How the work is charged
Solar installers usually quote a fixed price for the whole system based on its size and the equipment chosen, covering panels, inverter, mounting, and labour. Battery storage and electrical upgrades are often priced separately.
Payment terms and deposits
A deposit before installation is common, with the balance due on completion or after inspection and grid connection. Larger systems may bill in stages, and financing arrangements vary.
Tax and compliance
If you are registered for sales tax or VAT, show it as a separate line with your registration number. Solar incentives, rebates, and tax treatment differ widely by region, so confirm what applies to the customer and to you.
Frequently asked questions
How do solar installers charge?
Solar installation costs $2.50–$4.00 per watt before incentives. A typical 8kW residential system runs $15,000–$25,000. Labor is roughly 10–15% of total cost.
What should a solar installation invoice include?
Include system size (kW), panel brand and quantity, inverter type, mounting system, electrical work, permit fees, utility interconnection costs, monitoring setup, and warranty terms.
Should solar installers itemize equipment vs. labor?
Yes. Separating equipment and labor helps customers claim tax credits accurately. The federal solar tax credit applies to the total installed cost, but itemization helps with accounting.
Related invoice templates
Read the complete invoicing guide to see how to fill out, number, and send an invoice that gets paid.
Browse all invoice templates →