Hi, I am a solar panel & battery installer in Perth & Peel area in western australia approved by CEC, NETCC, NECA.

Read twelve months of bills before sizing, since daily kWh matters more than the total. Run the washer, dishwasher and pool pump while the sun is up - self-used power beats the feed-in rate.

North rows give the best yield, though an east/west split suits morning and evening loads. Trim anything that shades the array; one covered panel drags the string down. Rinse the glass on a cool morning, since dust and salt steal output.

Check the inverter app monthly; a sudden drop means dirt, new shade or a tripped isolator. Storage pays off when you export by day and use power at night, so size the pack for your evening draw and check current rebates.
Guides:
https://fusionsunsolar.com.au/residential/
https://fusionsunsolar.com.au/commercial/
https://www.notebook.ai/@solarenergyperth
https://www.airforceairconditioning.com.au/solar-panels-installation/