Commercial Solar Panels

Choosing commercial solar modules

Commercial and industrial arrays are specified differently from residential roofs: higher wattage modules, fewer units per kW, and a racking and freight plan that has to work on a loading dock. This collection carries 135 SKUs focused on the module classes used in C&I work, from Axitec and SolarEdge-compatible strings through to high-wattage bifacial modules, alongside the string inverters that pair with them.

The four specification decisions

• Wattage class. 400W-450W modules suit roofs with tight structural limits; 550W-700W modules reduce labor and racking cost per kW on ground mounts and large commercial roofs. Higher wattage also means larger physical dimensions - check the 72-cell vs 66-cell footprint against your racking layout.
• Cell technology. Mono PERC remains the cost baseline. TOPCon and n-type modules carry a better temperature coefficient and lower degradation, which matters in hot climates and on long-horizon PPAs. Bifacial adds rear-side gain only where the mounting surface is reflective and elevation permits.
• System voltage. 1500V modules require 1500V-rated inverters and string components. Mixing a 1500V module into a 1000V system is a design error, not a warranty issue.
• Certifications and warranty. UL 61730 listing for the module, IEC 61215/61730 test certificates where the off-taker asks, and a 25-30 year performance warranty with a US-addressable warranty entity.

String design and equipment pairing

Match module Voc temperature-corrected against inverter maximum DC input at the record low temperature for the site, not the average. Commercial strings also need to respect the inverter's MPPT window and maximum input current per MPPT, which is where high-current bifacial modules catch people out. The product pages list the electrical characteristics; the quote desk can confirm the string configuration against the inverter you have selected.

Pallet, freight and jobsite reality

Modules ship on manufacturer pallets, typically 30-36 modules, and pallets do not like being double-stacked or side-loaded. We quote LTL with liftgate when the site has no dock, and we can sequence deliveries so modules land after racking is installed. Freight is quoted per order against the delivery ZIP and site conditions.

Common questions

Which module should I use for a 100kW commercial roof? It depends on roof area and structural allowance - send the layout constraint and the quote desk will return two or three module options with cost and freight.

Do you carry 1500V modules and inverters? Yes, both appear in this collection and in the string inverter ranges; confirm system voltage on the request so the pairing is checked before quoting.

Can you supply datasheets for a submittal? Yes, the manufacturer datasheet and listing certificates are available with the quote.