REC Commercial Solar Panels: Which Models Fit a California Business Project

REC Group has 242 module models on the California Energy Commission's PV module list, all certified to UL 61730. For commercial work, the relevant ones are its 590 to 740 watt Pro models, rated for 1,500-volt systems, and its 430 to 475 watt Pure-RX models, rated for 1,000 volts. A listing is not a quality ranking, so judge an REC bid on design, price, availability and written warranty.

This page is for businesses, landlords and public agencies that received a commercial proposal specifying REC modules. For the brand's residential panels and background, see the REC solar panels review. For everything else about business solar, start at the commercial solar hub. Data was checked September 23, 2026.

REC module lines on the CEC list

The CEC PV Module List records each model's nameplate rating, safety certification, maximum system voltage and temperature behavior as reported for listing. These are the REC Group lines most likely to appear in a 2026 commercial bid:

Older REC Group families, with TP, NP and 72-cell model numbers, remain on the list as well, so a bid may name a model not shown here. Look up the exact model number on the CEC list before comparing.

What a CEC listing does and does not tell you

According to the CEC's solar equipment lists page, the list covers equipment that meets national safety and performance standards and records values such as the PTC rating, nameplate ratings and temperature coefficients. It also says the Commission “makes no claim or warranty on the equipment and its safety, performance, or durability,” and that listing is not required to install equipment in California.

The list's own notes add two caveats. Design qualification and performance test reports are optional submissions; the REC entries above show “No Information Submitted” for both, which means the data was not filed with the CEC, not that a test failed. And the PTC rating, which uses test conditions closer to real operation than the nameplate's standard test conditions, is still higher than a real array will produce after soiling, wiring, inverter and heat losses.

Are REC panels a good fit for your project?

The brand matters less than these project-level questions:

• Voltage and string design. A 1,500-volt module needs an inverter and balance of system designed for 1,500-volt strings; a 1,000-volt module does not. Ask which the design uses and why.
• Heat. Rooftop modules in inland California run hot, and a smaller (less negative) temperature coefficient loses less output as cells heat up. Compare the listed γPmax of every module in competing bids on the same CEC list rather than across marketing sheets.
• Bifacial gain. The Pro L and Pro XL are bifacial. Rear-side production depends on what is under the array, so ask whether the production model credits bifacial gain on a white roof, a ground mount or a parking canopy, and how much.
• Roof area. Higher-wattage modules can fit more capacity on a constrained roof, but fire-access pathways and structure often limit layout first. See the commercial roof guide.
• Warranty and support. Get the manufacturer's product and performance warranty as a document, and confirm who files a claim for you if the installer stops operating.

Where the modules were made, and why it matters for the credit

Country of manufacture is not on the CEC list, and it affects the federal credit in two ways. First, the domestic content bonus under 26 U.S.C. §48E(a)(3)(B) requires a set share of U.S.-made manufactured products: 50% for projects beginning construction in 2026 and 55% after 2026. Second, for construction beginning after December 31, 2025, the credit is denied if the facility includes material assistance from a prohibited foreign entity. Under 26 U.S.C. §7701(a)(52), a solar facility beginning construction in 2026 needs a non-prohibited cost ratio of at least 40%, rising to 45% in 2027. The IRS published interim safe harbors for that calculation in Notice 2026-15.

Neither test turns on the brand name. Ask the bidder for supplier certifications for the exact modules, inverters and racking, and have a tax professional review them. The commercial cost and tax guide covers the rest of the credit rules.

How much do REC commercial panels change the price?

Less than most buyers expect. Berkeley Lab's 2026 data update puts everything other than modules and inverters at roughly 80% of the median installed price of 2025 residential and non-residential systems. A premium module can still be the right call, but the design, labor, structure and interconnection lines move a commercial price more. Ask each bidder for the module line separately so you can see what the brand choice costs, and compare the full bid against the commercial proposal checklist.

Comparing an REC bid with another module

1. Look up both exact model numbers on the CEC list and note nameplate, voltage and γPmax.
2. Ask both bidders for the production model on the same weather file, layout and losses.
3. Compare price per DC watt for the whole system, not per module.
4. Compare the written warranties side by side, including who handles a claim.
5. Get origin documentation from both if the domestic content bonus or foreign-entity rules matter to your tax position.

Frequently asked questions

California Rate Relief is a referral service. We are not a licensed contractor. It has no relationship with REC Group, does not sell modules and does not endorse any manufacturer.

Sources

Checked September 23, 2026.

• California Energy Commission, PV Module List (full-data download, data unchanged since September 21, 2026) and Solar Equipment Lists
• LBNL, U.S. Distributed Solar and Storage: 2026 Data Update (August 2026)
• 26 U.S.C. §48E and §7701, Office of the Law Revision Counsel (text in effect September 22, 2026)
• IRS, Notice 2026-15, interim safe harbors for material assistance from a prohibited foreign entity