A practical checklist for evaluating solar EPC bids

Compare like with like

Normalise every bid to the same DC and AC capacity, module and inverter class, and scope boundaries before comparing price.

Check the yield claim

Ask for the PVsyst report behind every generation figure and check the weather source, losses and P50/P90 basis. Never accept a yield number without the report.

Read the BOQ and warranties

• Module ALMM listing and degradation warranty
• Inverter warranty and service terms
• Cable sizing and voltage-drop limits
• Performance guarantee and liquidated damages

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