From Solar Quote to Commissioning: Questions to Ask Before You Buy

Make supplier quotes comparable

Send each supplier the same location, appliance schedule, backup objective, existing-system details and installation expectations. Ask every proposal to state exact model numbers and quantities, usable battery energy, inverter continuous and surge output, solar input limits, included protection equipment and any assumptions that affect performance.

Separate equipment price from delivery, taxes, installation, commissioning and optional monitoring. A low headline price can omit items needed to complete a safe, working installation.

Check documentation and responsibility

• Confirm battery-inverter compatibility for the exact models and configuration.
• Request product datasheets, installation manuals, warranty conditions and destination-relevant compliance evidence.
• Identify who performs site checks, installation, electrical approvals, commissioning and operator training.
• Agree how faults, warranty claims, replacement parts and technical questions will be handled after delivery.

Use commissioning as a documented acceptance step

Before installation, agree the checks and records to be handed over. A qualified installer should follow manufacturer procedures and local requirements, verify protective devices and confirm the system behavior for the operating modes included in the design. The owner should receive the final equipment list, settings, instructions, monitoring access and warranty contacts.

TenaPower can be asked to quote against the same project brief as other suppliers. Evaluate the response on documentation, compatibility, scope and support as well as price; ask for clarifications in writing before confirming an order.

Commercial note: this buyer's guide is published by TenaPower and is not a substitute for independent technical review or local electrical approval.