Two solar quotes can show the same system size and very different equipment. One lists a named manufacturer and a model number. Another says only “premium panels.” If you cannot tell who made your panels, who supplied them, and who will stand behind them, you cannot compare quotes fairly.
This guide shows where to find the panel brand on a quote, how to read a model number, and how to confirm that the brand, supplier, and installer are who they say they are.
Key Takeaways
- A quote can involve three different companies: the manufacturer, the supplier, and the installer.
- The model number matters more than the marketing name. It tells you the maker, wattage, and product line.
- A brand’s headquarters is not always where its panels are made.
- Warranty terms can depend on the installer, not just the panel brand.
- Get the full equipment list in writing before you sign.
Manufacturer, Supplier and Installer: Who Is Who
People use “solar panel supplier” to mean several different things. Here is how the roles differ.
| Role | What they do | Where you see them | What to ask |
|---|---|---|---|
| Manufacturer | Builds the panel and issues the product and performance warranty. | Brand name and model number on the equipment list and datasheet. | Who is the manufacturer, and where is the panel assembled? |
| Supplier or distributor | Sells panels and other equipment to installers, often by the pallet. | Usually not named on your quote unless you ask. | Where does the installer buy the equipment, and is it new stock? |
| Installer or solar company | Designs the system, pulls permits, installs it and gives the workmanship warranty. | The company name and contract you sign. | Are you certified by the manufacturer, and who does the install work? |
To vet the company itself, see our guide on how to choose a solar company. This post focuses on the equipment side of the quote.
Where to Find the Panel Brand on a Solar Quote
Check the equipment list first
Most proposals include an equipment or system summary page. Look for these items:
- Panel manufacturer and full model number
- Number of panels and watts per panel
- Total system size in kW
- Inverter or microinverter brand and model
- Racking brand and battery brand, if included
If the quote says only “high-efficiency panels” or “tier 1 panels,” ask for the exact manufacturer and model in writing. For help reading the rest of the document, see our solar quote guide for California.
Decode the model number
Model numbers follow each manufacturer’s own pattern, but many include the brand, wattage, and product line. Use these examples as a guide.
| Example listing | Brand | Wattage | Product line or series | Other clues |
|---|---|---|---|---|
| REC460AA Pure-RX | REC | 460 W | Alpha Pure-RX (AA is the Alpha series code) | 88 half-cut cells per the REC datasheet |
| Qcells 430W QTron 108 Cell | Qcells | 430 W | QTron | 108-cell design |
A model number you can match to a manufacturer datasheet is a good sign. For more on panel basics, read our solar PV module buying guide and monocrystalline vs other solar panels.
Watch for vague or missing details
- No manufacturer named, only a marketing label
- No model number or wattage per panel
- Panel count and system size that do not match when you multiply them
- Equipment you cannot find any information about online
EnergySage notes that quotes listing equipment you can find little information about can be a red flag. Ask for clarification before you move forward.
Brand Headquarters Is Not the Same as Where Panels Are Made
A brand’s home country often differs from its factory locations. Energy Digital’s 2026 manufacturer list, for example, describes REC as having corporate roots in Scandinavia but manufacturing anchored in Asia. It describes Canadian Solar as Canadian by name with a strong manufacturing base in China and hubs in Thailand, Vietnam, and Texas.
| Brand | Headquarters | Manufacturing note |
|---|---|---|
| REC | Lysaker, Norway | Manufacturing anchored in Asia |
| Canadian Solar | Kitchener, Ontario | Strong China base, plus hubs in Thailand, Vietnam and Texas |
| Qcells | Seoul, South Korea | Growing U.S. and European manufacturing footprint |
| First Solar | Tempe, Arizona | Thin-film (CdTe) technology |
If country of assembly or domestic content matters to you, ask for the specific model’s documentation. Our post on U.S. solar manufacturing and pricing explains how manufacturing location can affect cost.
How to Verify the Brand and Supplier Before You Sign
A simple verification checklist
- Get the datasheet: ask for the manufacturer’s datasheet for the exact model on your quote.
- Match the numbers: confirm wattage, panel count, and total kW add up.
- Check an independent source: see whether the panel appears in an equipment guide such as EnergySage’s panel, inverter, and battery guides.
- Ask about certification: find out whether the installer holds a certification or endorsement from the manufacturer.
- Ask about the supplier: request the name of the distributor and confirm the equipment is new stock.
- Put it in the contract: the final agreement should name the same brand and model as the quote.
Why the installer’s credentials matter
EnergySage explains that manufacturer endorsements often come with perks for customers, such as preferred pricing or extended warranties. REC’s ProTrust warranty is one example: REC states it is only available on panels purchased through an REC Certified Solar Professional installer, and it offers up to 25 years of product, performance, and labor coverage on eligible models.
How Brand and Supplier Affect Your Warranty
A solar system usually carries more than one warranty. Who backs each one depends on the brand and the installer.
| Warranty type | Who backs it | Typical range |
|---|---|---|
| Product warranty | Panel manufacturer | Varies by brand and model. GoGreenSolar lists 10 to 12 years on its brands, while some premium lines offer up to 25 years. |
| Performance warranty | Panel manufacturer | Commonly 25 years, with some brands offering 30. |
| Workmanship warranty | Installer | Typically 1 to 10 years, per EnergySage. Read the exclusions. |
EcoWatch uses 25-year product and performance coverage plus a 10-year workmanship warranty as its benchmark when rating installers. For a full breakdown, read what a solar warranty covers.
What Rankings Tell You and What They Do Not
Online rankings can help, but each type answers a different question.
| Type of ranking | What it measures | What it does not tell you |
|---|---|---|
| Best solar companies in your city | Installer reviews, responsiveness, warranties and pricing | Which panel brand and model will be on your roof |
| Top solar panel manufacturers | Global scale, shipments and technology | How a brand performs on a home quote or who backs the warranty locally |
| Online panel shops | Panel specs and list prices | Installation, permitting and workmanship coverage |
Use rankings to build a shortlist, then confirm the details in your own quote. For price context, see factory-direct solar pricing.
Questions to Ask About Panel Brand and Supplier
- What is the exact manufacturer and model number of each panel?
- Where are these panels assembled?
- Who is your equipment supplier, and is the stock new?
- Are you certified or endorsed by this manufacturer?
- Who backs the product warranty, and do I need to register it?
- Will the same brand and model appear in the final contract?
- Will your own crew install the system, or subcontractors?
For a broader list, use our questions to ask before a solar quote.
Frequently Asked Questions About Solar Panel Brands and Suppliers
How do I find out which brand of solar panels is on my quote?
Check the equipment list or system summary in your proposal for the manufacturer name and model number. If it is missing, ask your installer to provide the exact brand, model, and wattage in writing.
What is the difference between a solar panel manufacturer and a solar panel supplier?
The manufacturer builds the panel and issues the product and performance warranty. A supplier or distributor sells panels and other equipment to installers. Your installer then designs and installs the system and provides the workmanship warranty.
Does the panel brand affect my warranty?
Yes. The manufacturer sets the product and performance terms. Some programs, such as REC’s ProTrust, also require purchase through a certified installer to qualify for extended coverage.
Are panels from a well-known brand always made in that brand’s home country?
No. Brand headquarters and factory locations often differ. Ask for the country of assembly for the specific model on your quote.
Can I compare quotes that list different panel brands?
Yes, if each quote lists the manufacturer, model, wattage, panel count, and total system size. Compare price per watt, warranty terms, and equipment together instead of price alone.