Australian Electrician's Guide to Quoting Solar Installations

How Australian electricians quote residential and commercial solar installations. Covers system sizing, rebates, grid connection, and compliance requirements.

4 February 20267 min read

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Solar installations are one of the most profitable services for Australian electricians. Here's how to quote them accurately and win more jobs.

Understanding Solar System Components

System Sizing

Residential: 5kW-13kW typical
Small commercial: 30kW-100kW
Calculate based on energy usage and roof space

Quote Components

Panels (quantity × cost)
Inverter (string or micro)
Mounting system
Cabling and switchboard upgrades
Labour and installation
Grid connection application

STC Rebates

Small-scale Technology Certificates reduce upfront cost
Calculate rebate value at current STC price
Show as line item discount on quote

Compliance Requirements

CEC accreditation required
AS/NZS 5033 compliance
Grid connection approval
Certificate of Compliance

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