®Comparing suppliers on more than price
Verification status, certification history and delivery track record matter as much as the quoted number, and this guide covers how to weigh them together instead of defaulting to the lowest bid.
Resources for the solar trade
Buyer's Guides
Practical sourcing guidance on comparing suppliers, reading a spec sheet and structuring a multi-vendor RFQ.
Buyer's Guides
Practical sourcing guidance on comparing suppliers, reading a spec sheet and structuring a multi-vendor RFQ.
What this guide covers
Reading a spec sheet for what matters
Power tolerance, temperature coefficients and degradation curves tell you more about real-world performance than the headline wattage number, and this guide walks through which figures actually predict field performance.
Structuring an RFQ that gets comparable answers
A poorly structured RFQ gets back four incomparable quotes; this guide covers how to specify a bill of materials so responses land on the same landed-cost basis.
Who this is for
Installers and distributors sourcing regularly
Guidance targets someone making sourcing decisions often enough that a repeatable comparison process saves real time, not a one-off purchase.
Your questions, answered.
What should a buyer check first when comparing solar suppliers?
Start with more than the headline price: verify the supplier's track record, warranty terms, product certifications, lead times, and what the delivered cost actually includes. A low unit price can hide freight, availability, or support gaps that surface later. Sunhub's buyer's guides walk through comparing suppliers on the factors that determine total landed cost, not just the quote.
How do you read a module spec sheet for the details that actually matter?
Look past nameplate wattage to power tolerance, temperature coefficients, degradation rate, and the difference between STC and NOCT ratings, since those govern real-world output. Check the warranty terms and certifications too. The datasheet tells you how a module behaves in the field, not just in a lab, which is what the Sunhub buyer's guides help you decode.
What makes an RFQ structured well enough to get comparable quotes back?
A good RFQ fixes the variables so answers line up: exact quantities, specifications, delivery location and timing, payment terms, and required certifications, all stated the same way for every supplier. Without that, quotes come back on different assumptions and cannot be compared cleanly. Sunhub's guidance on structuring a multi-vendor RFQ is built to get answers you can actually put side by side.