Solar Installer Invoice Template
A solar installer invoice bills watt, lists products, labour and materials on separate lines and states the terms (Deposit at signing, payment on install, final on permission to operate). This template is pre-filled for install an 8 kW rooftop solar system with 20 panels and microinverters on an asphalt shingle roof: 8 lines totalling $14,900.00 before tax. Edit it and download the PDF.
Pre-filled for a solar installer: install an 8 kw rooftop solar system with 20 panels and microinverters on an asphalt shingle roof. Example prices: replace them with your own.
From
Maple Row Solar Installation
231 Market Street
Salem, MA 01970
billing@example.com
(978) 555-0131
Invoice
Bill to
Jamie Ortiz
140 Orchard Drive
Springfield, IL 62704
client@example.com
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Solar modules, 400 W monocrystalline | 20 each | $210.00 | $4,200.00 |
| Microinverters, one per module | 20 each | $175.00 | $3,500.00 |
| Roof racking, flashed mounts and rails | 20 each | $65.00 | $1,300.00 |
| Installation labor, roof and electricalCrew of three, two days | 48 hr | $75.00 | $3,600.00 |
| AC disconnect, combiner and conduit run | 1 lot | $950.00 | $950.00 |
| System monitoring gateway | 1 each | $350.00 | $350.00 |
| Engineering, permit set and plan review | 1 each | $850.00 | $850.00 |
| Utility interconnection application | 1 each | $150.00 | $150.00 |
- Subtotal
- $14,900.00
- Balance due
- $14,900.00
Notes
Thank you for choosing Maple Row Solar Installation. Terms: Deposit at signing, payment on install, final on permission to operate.
Payment details
Bank transfer or card. Please quote the invoice number.
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Solar Installer invoice at a glance
| Typical job | Install an 8 kW rooftop solar system with 20 panels and microinverters on an asphalt shingle roof |
|---|---|
| Main billing unit | watt |
| Usual payment terms | Deposit at signing, payment on install, final on permission to operate |
| Deposit practice | Solar contracts usually take a deposit at signing and split the rest between installation day and the utility's permission to operate. |
| Sample lines | 8 lines, $14,900.00 before tax |
| Largest line | Solar modules, 400 W monocrystalline: $4,200.00 (28%) |
| Labour hours billed | 48 h, $3,600.00 |
| Trade-specific fields | System size (kW DC), Module and inverter models, Permit no., Utility account no., Interconnection application no. |
Sample solar installer invoice line items
Install an 8 kW rooftop solar system with 20 panels and microinverters on an asphalt shingle roof: 8 lines adding up to $14,900.00, split into products $8,050.00 (54%), labour $3,600.00 (24%) and materials $2,250.00 (15%).
| Item | Qty | Rate | Amount |
|---|---|---|---|
| Solar modules, 400 W monocrystalline | 20 each | $210.00 | $4,200.00 |
| Microinverters, one per module | 20 each | $175.00 | $3,500.00 |
| Roof racking, flashed mounts and rails | 20 each | $65.00 | $1,300.00 |
| Installation labor, roof and electrical (Crew of three, two days) | 48 hr | $75.00 | $3,600.00 |
| AC disconnect, combiner and conduit run | 1 lot | $950.00 | $950.00 |
| System monitoring gateway | 1 each | $350.00 | $350.00 |
| Engineering, permit set and plan review | 1 each | $850.00 | $850.00 |
| Utility interconnection application | 1 each | $150.00 | $150.00 |
| Subtotal | $14,900.00 | ||
| Total before tax | $14,900.00 |
What a solar installer invoice should include
- Your solar installation company name, address, phone and email, plus a tax ID if you are registered
- The customer's name and billing address (Jamie Ortiz in the sample)
- A unique invoice number (INV-6357) and the issue date
- Payment terms and a due date: Deposit at signing, payment on install, final on permission to operate
- System size (kW DC): for example See notes
- Module and inverter models: for example 2019 Ford Transit, VIN ending 1869
- Permit no.: for example BP-888555
- Utility account no.: for example CUST-341
- Line items in watt or per item, each with quantity, rate and amount
- How to pay you: bank details, card link or cheque payee
How solar installers bill
Residential solar is usually priced per watt of DC system capacity, then broken down into panels, inverters, racking, electrical work and permitting on the invoice.
Solar installers commonly use "Deposit at signing, payment on install, final on permission to operate". Solar contracts usually take a deposit at signing and split the rest between installation day and the utility's permission to operate.
U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2024: median hourly wage of Solar Photovoltaic Installers $24.93 (employees, not contractor rates). The sample's $75.00 per hour for "Installation labor, roof and electrical" is 3.0 times that employee figure; a business rate also has to cover insurance, tools, travel, unbilled admin time and profit.
Solar Installer invoicing tips
- Print the system size in kW DC, the module and inverter models and their quantities on the invoice; utilities, rebate programs and future buyers of the house all ask for exactly that equipment list.
- Tie the last payment to the utility's permission to operate and write the PTO date when you invoice it, because customers resist paying in full for a system they are not yet allowed to switch on.
- If a main panel upgrade or roof repair was needed before mounting, bill it as a separate line with its reason, since many rebates and incentives treat that work differently from the solar equipment itself.
- Show any rebate or incentive you applied for on the customer's behalf as its own line, with whether it is already deducted or still pending, so the net price is never mistaken for a guarantee.
Solar Installer billing disputes to head off
- Owners compare the first bills with the production estimate in the proposal. Noting on the invoice that the estimate was based on stated shading, tilt and weather assumptions keeps a cloudy first month from becoming a dispute.
- Roof leaks at mounts are blamed on the installer for years; recording the flashing method and the roof's condition before install protects you when a later leak has another cause.
Work a solar installer can bill for
Core tasks of Solar Photovoltaic Installers (O*NET 47-2231.00, O*NET 29.x task statements, CC BY 4.0). Each can become a line on the invoice.
- Assemble solar modules, panels, or support structures, as specified.
- Install photovoltaic (PV) systems in accordance with codes and standards, using drawings, schematics, and instructions.
- Perform routine photovoltaic (PV) system maintenance on modules, arrays, batteries, power conditioning equipment, safety systems, structural systems, weather sealing, or balance of systems equipment.
- Activate photovoltaic (PV) systems to verify system functionality and conformity to performance expectations.
- Apply weather sealing to array, building, or support mechanisms.
- Check electrical installation for proper wiring, polarity, grounding, or integrity of terminations.
How to make a solar installer invoice
-
Add both parties
Enter Maple Row Solar Installation (your business) and the customer, Jamie Ortiz, then system size (kw dc).
-
Number and terms
Give it a unique number such as INV-6357 and set the terms to Deposit at signing, payment on install, final on permission to operate.
-
List the work
One line per item: the sample runs from "Solar modules, 400 W monocrystalline" (20 each) to "Utility interconnection application" (1 each).
-
Check the total
The 8 lines come to $14,900.00; add sales tax only if your state taxes solar panel installation.
-
Download and send
Download the PDF or print it, then keep a copy with the solar panel installation records.
Frequently asked questions
How do I make a solar installer invoice?
Add your solar installation company details, the customer, system size (kw dc), module and inverter models, permit no. and utility account no., then one line per item with quantity and rate. The template above is pre-filled with 8 lines for install an 8 kW rooftop solar system with 20 panels and microinverters on an asphalt shingle roof totalling $14,900.00; change the prices and download the PDF.
How do solar installers charge?
Mostly watt. Residential solar is usually priced per watt of DC system capacity, then broken down into panels, inverters, racking, electrical work and permitting on the invoice.
When should a solar installer invoice be paid?
Deposit at signing, payment on install, final on permission to operate is the usual arrangement. Solar contracts usually take a deposit at signing and split the rest between installation day and the utility's permission to operate. Put the terms and the due date on the invoice so there is no doubt.
How much do solar installers earn per hour?
U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2024: median hourly wage of Solar Photovoltaic Installers $24.93 (employees, not contractor rates). Self-employed rates are usually higher because they cover overhead and unbilled time.