Going partially off the grid is a smart alternative for homes who want to become completely energy self-sufficient. A partial off-grid solar system is one that runs a few essential electrical loads – for example, the refrigerator, lights and television – on a separate electrical circuit that has no physical connection to the grid mains. The rest of the devices in the home run using grid power and/or a grid-connect solar system.

Why go partially off-grid?

Going completely off-grid requires extra-special dedication

Plenty of Australian homeowners dream about going off the grid with solar panels and home battery storage. But for the average, grid-connected Aussie home – which consumes between 20 and 30 kilowatt-hours (kWh) of energy per day – installing a system large enough to keep the lights (and everything else) on throughout the year just isn’t worth it.

If they rely solely on solar and batteries, such a home would need enough capacity to carry them through 3-4 days of gloomy weather. Right away, this is a significant financial commitment, especially when compared to the relative affordability of grid-connected solar systems, whose prices sit at historic lows in Australia.

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{ 4 comments }

errol teichmann 29 March, 2017 at 1:38 pm

the most power usage we have used is 6kwh per day, service fee is more than power bill. trying to decide to go off grid or partially so.also we are at the end of power lines and we have the power drop out often. also ergon is power supplier and they pay virtually nothing for solar feed into grid.we are in s/e qld.

Solar Choice Staff 3 April, 2017 at 12:18 pm

Hi Errol,

Thanks for the comment. 6kWh/day is very low usage, indeed. That makes you a prime candidate for going off the grid, but keep in mind that one of the key considerations with regard to going off grid is that you will not be able to fall back on the grid in the event that your system goes down (for whatever reason).

Given your situation, I’d advise that a partial off-grid system (as described in the article above) is probably not what you’re after, but instead a full-fledged off-grid system. As long as you have a grid connection, you will need to pay the daily supply charges – even if you draw nothing from the grid on a daily basis.

Let us know if we can be of further assistance.

Marion Rasmussen 2 December, 2016 at 7:29 pm

I have just under 6kw solar panels, my highest kw usage a day was 12.9kw I was wondering about going partial off the grid instead of full on the grid. Can I do this? & how much would it cost. I live in Gladstone. Who would be the best one to go though for installing batteries.

Solar Choice Staff 20 January, 2017 at 3:37 pm

Hi Marion,

Thank you for your comment.

You can install storage so that the excess energy normally sent to the grid would be stored for your own consumption in the evening hours.
If you would like to see the installers offerings in your area, simply fill in the form on our home page for battery storage only to receive a quote comparison with a full break down of products, warranties and indicative cost

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