Two quotations with the same inverter size can cover very different systems. Compare the delivered service, installation scope and support before comparing the final price.
Make the scope visible
Request equipment models, panel capacity, usable storage assumptions, mounting, cables, protection, installation and commissioning. Clarify delivery, structural work and changes to distribution boards. A list of major components is not a complete scope.
Ask what happens after handover
Check who handles warranty claims, what the warranty covers and how a service request is raised. Ask for operating guidance, labels, test records and an agreed handover. Keep the quotation and final configuration together.
Compare like for like
Use the same essential load and backup target for each proposal. Ask which assumptions could change the price after a site assessment. Financing instalments, total payable and any exclusions should be clear before you commit. A sound purchase decision is based on the whole service life.
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