How to Size a Solar System for Your Tasmanian Home

Choosing the right solar system size is one of the most important decisions you’ll make. Too small, and you won’t offset enough of your electricity bill. Too large, and you’ll be exporting excess power at a lower feed-in rate instead of saving at the full retail rate.

The starting point is your electricity consumption. Check your Aurora Energy bill for your daily average usage in kilowatt-hours (kWh). A typical Tasmanian household uses between 15 and 25 kWh per day, though homes with electric heating can be significantly higher.

For most Tasmanian homes, a system between 6.6 kW and 10 kW is a strong starting point. A 6.6 kW system will generate roughly 20–26 kWh per day in summer and 8–12 kWh per day in winter, depending on your location and roof orientation.

Consider your future needs as well. If you’re planning to add a battery, hot water heat pump, or electric vehicle charger, a larger system will serve you better in the long run. The marginal cost of adding extra panels at the time of installation is far less than retrofitting later.

Your installer should conduct a detailed assessment of your roof space, shading, orientation, and consumption profile before recommending a system size.

To get a personalised system assessment for your Tasmanian home, reach out to Solar Generation Tasmania today.

Published by Solar Generation Tasmania. General information current as at publication — rebates, tariffs and prices change, so confirm current figures before deciding.