As a procurement manager at a mid-sized EPC firm in California, I manage a solar module budget of roughly $4.2 million annually. Over the past six years, I’ve negotiated contracts with more than a dozen module suppliers, and I’ve documented every single purchase order — including the ones that taught me hard lessons about hidden costs. This checklist is for other cost controllers who are evaluating Maxeon solar panels in 2025. It’s not a sales pitch. It’s a practical, step-by-step guide to verifying where the panels are actually made, understanding the real total cost, and avoiding the traps I’ve fallen into.
Who This Checklist Is For
If you are a procurement lead, project developer, or EPC estimator sourcing high-efficiency modules for a 2025 project pipeline, this is for you. Specifically, you should use this if:
- You’ve been asked to look at Maxeon 6 or 7 series for a commercial or utility-scale project.
- You need to verify the manufacturing location of the panels to meet domestic content requirements or supply chain compliance.
- You’re trying to decide between a direct factory purchase and a distributor quote.
- You’ve heard the term “IBC” and want to confirm there’s no hidden premium that kills your IRR.
There are five steps. Each one has a specific check or question you need to ask. By the end, you’ll have a clear picture of what you’re buying and what it actually costs.
Step 1: Verify the Series and Technology Claim
Here’s something a lot of buyers skip: confirm you’re getting Maxeon’s proprietary IBC (Interdigitated Back Contact) cells, not a rebadged or previous-gen product. In 2024, I audited a quote that listed “Maxeon 6” but the fine print specified “Maxeon 6 AC” — which includes a microinverter. That’s a different supply chain, a different price point, and a different warranty structure.
Check: Ask your supplier for the specific datasheet PDF for the model number quoted. Cross-reference the cell technology. Maxeon 7 panels use Gen 7 IBC cells with a module efficiency of up to 24.1%. The 6 series uses Gen 6 IBC. If the datasheet says “PERC” or “TOPCon” — that is not a Maxeon panel.
Pro tip: I built a “datasheet checklist” after getting burned on a previous module purchase. I have a 1-page template that lists: cell tech, power tolerance, temperature coefficient (Pmax), and degradation rate. Verify Maxeon’s 0.25% annual degradation rate is on the sheet.
Step 2: Pin Down the Actual Manufacturing Location
This is the big one for 2025. The question “where are Maxeon solar panels made?” has changed. Maxeon’s primary cell and module manufacturing is in Malaysia (with additional capacity in Mexico and a new facility in the US ramping up). But here’s the nuance: while Maxeon cells are made in Malaysia, some module assembly can happen in other locations.
For Q1 2025, the breakdown looks like this:
- Cells: All IBC cells are manufactured in Maxeon’s Fab 3 and Fab 4 facilities in Malaysia.
- Modules (Panels): The majority of modules are assembled at Maxeon’s own factories. However, there are strategic partnerships for local assembly in specific markets. If a supplier claims a panel is “assembled in [Country X]” but cannot provide the certificate of origin showing the cells originated in Malaysia, I would push back. That detail matters for duty rates and incentive eligibility.
Check: Obtain the Certificate of Origin and the specific factory location from the supplier. Do not rely on a general “Made in Malaysia” sticker. Ask for the name of the specific factory and its address. Cross-reference this with Maxeon’s 2024 annual report or investor day presentation.
Why this matters: In Q3 of 2024, I almost signed a contract for a volume of panels that were promoted as “US-assembled.” The price was 12% higher. On the day before signing, I asked for the cell origin. It was China. The “US assembly” was just lamination. If my project required US-manufactured cells for a federal grant, I would have failed compliance.
Step 3: Get the Total Cost of Ownership (TCO) Quote, Not Just the Per-Watt Price
This is my area. Per-watt pricing on Maxeon panels is higher than mainstream PERC modules. Anyone sourcing knows this. The real question is: what is the total cost delta vs. the alternative, and what do you get for it?
When I evaluated high-efficiency panels for a 5 MW ground-mount project in 2024, I compared three quotes: a high-efficiency IBC module (Maxeon), a TOPCon module, and a PERC module. I did a full TCO analysis over 25 years.
Check: Demand a quote that breaks down:
- Per-watt module price (FOB port or delivered)
- Shipping and logistics cost (especially if from a Malaysian port)
- Tariffs/duties (Section 201, Section 301, AD/CVD — use a customs broker estimate)
- Warranty administration costs (Maxeon’s 40-year warranty is a product, but does it require specific installation documentation? If so, that’s a cost.)
- System balance-of-system (BOS) savings (Maxeon panels generate more kWh per sq. meter, meaning fewer panels and less racking. That is real savings. Count it.)
“In my experience analyzing over $4 million in solar procurement annually, the per-watt price is a distraction. The real cost is the cost per kWh produced over 40 years, minus the cost of capital. When I ran that model for a 2025 project, the Maxeon panel’s lower degradation rate (0.25% vs. 0.45% for PERC) meant an extra 4% LCOE savings by year 25. That is real money.”
Step 4: Navigate the Dealer and Distributor Network
Maxeon doesn’t sell direct to most installers. They have a select group of authorized distributors and independent installers. This creates a supply chain that is tighter than commodity panels, but it also means you have fewer places to shop around.
Check: Ask the supplier for their authorized distributor status. Visit maxeon.com/where-to-buy to verify. If your supplier is not on that list, you are not buying genuine Maxeon panels with the full 40-year warranty. Period.
If you’re sourcing from a Tier 1 distributor like Graybar, CED Greentech, or a regional partner, ask for the specific stock location. In Q4 of 2024, I had a project delayed by three weeks because a distributor’s “on-hand” inventory turned out to be a container that was still on the water from Malaysia. I have since added a “stock verification” step to my procurement workflow.
Pro tip: Ask for the batch serial numbers. Maxeon panels have a unique serial number that maps to the factory, the date of manufacture, and the specific production line. You can (and should) ask Maxeon’s customer support to validate a sample of serials before paying a deposit.
Step 5: Validate the Warranty with a Fine-Tooth Comb
The 40-year warranty is Maxeon’s crown jewel. But a warranty is only as good as the company standing behind it. In 2023, when SunPower (Maxeon’s former parent) restructured, there was confusion about warranty coverage. Maxeon is now an independent company (spun off in 2020), but you need to confirm the specific terms for your region and project type.
Check: Read the warranty certificate. Not the product spec sheet. The actual legal document. I look for three things:
- Power output guarantee: Maxeon guarantees 92% power at 40 years. Is that “nameplate rated power” or “minimum measured power”? There is a difference.
- Labor coverage: Is there a cap on labor reimbursement per panel? Many warranties pay for the panel but not the labor to change it. With Maxeon’s 40-year term, labor costs are significant if you have a defective batch.
- Transferability: If you sell the project, can the warranty be transferred? Maxeon allows transfer for a fee or under specific conditions. Know this if you are a developer planning a project sale.
Common Mistakes I’ve Made (And You Should Avoid)
Mistake #1: Assuming all “Maxeon” panels are the same. I sourced a quote for a small commercial rooftop thinking “Maxeon 6” was one product. It wasn’t. There are performance series (P-series) and AC panels. The price difference was 8 cents per watt.
Mistake #2: Not accounting for panel dimensions in the racking design. Maxeon panels, especially the 7 series, have a unique frame design. If your racking team designs for standard frames and then you switch to Maxeon, you may need adapters or custom clamps. That is a $0.01-$0.02 per watt hidden cost.
Mistake #3: Paying for expedited shipping without checking port congestion. In 2024, we paid a $12,000 rush fee for a container from Port Klang (Malaysia) to Long Beach. The ship still sat in the harbor for 6 days. The rush fee was wasted. I have since started using a freight forwarder who provides real-time berthing data.
Bottom line: Maxeon panels can provide great long-term value if you source them correctly. But “sourcing correctly” means applying a rigorous, step-by-step checklist that covers technology, factory origin, TCO, authorized channels, and warranty fine print. Don’t skip steps. I have learned that lesson the hard way — multiple times.
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