Solar Builder

JAN-FEB 2019

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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Page 21 of 51

22 JA N UA RY / F E B RUA RY 2 0 1 9 F or today's top EPCs, a solar project's success comes well before an RFP is even issued. It starts with vendor and product assessment. Often at the request of the buyer, manufacturers send their products — modules, inverters, batteries, trackers — to a third-party lab for exten- sive testing. The lab then sends the results to the buyer, who uses those results to qualify a manufacturer for their approved vendor list. But that's just a baseline qualification step in a never-ending cycle of requalification and reassessment of PV products and systems. For example, product quality evolves (or devolves) with each SKU or update. That structural issue you had with Version B of a racking sys- tem may be completely solved by Version X. The best practice here is to re-affirm your approved vendor list every 18 months or so. "We've found that it's typically true that the bill of materials [BOM] will change Life of the Third -Party Here's why project-level due diligence is the BOM! By Chris Crowell

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