Commentary

Rooftop solar clocks second-best month ever, buoyed by commercial boom

Published by

One Step Off The Grid

Small and medium businesses installing rooftop solar to cut costs and gain more independence from the grid have helped to deliver another bumper month for rooftop solar in Australia, with a total of 126MW installed across June.

The latest data from solar analysts SunWiz shows that while registrations fell for the month from May’s record volume, they fell to a level that was still the second-highest on record.

That means, says SunWiz managing director Warwick Johnston, that “for the first six months of 2018 we’re just shy of the total sub-100kW installation tally for 2015 or 2016. We’re also 50 per cent ahead of the same time last year.” (See chart below.)

 

Driving momentum this month has been commercial-sized solar systems, with significant growth in systems sized over 30kW. Residential registrations, meanwhile, “fell pronouncedly,” says Johnston.

Solar growth in NSW also fell, but – again – to levels that were its second-best month on record.

The SunWiz report says commercial is growing in Victoria, WA and Queensland, with small commercial continues on its trajectory in NSW, Queensland and Victoria, and large commercial bouncing up in Queensland and Victoria.

Average rooftop solar system size also reached a new record, the report says, jumping to 7.3kW.

This article was originally published on RenewEconomy’s sister site, One Step Off The Grid, which focuses on customer experience with distributed generation. To sign up to One Step’s free weekly newsletter, please click here.

Sophie Vorrath

Sophie is editor of Renew Economy and editor of its sister site, One Step Off The Grid . She is the co-host of the Solar Insiders Podcast. Sophie has been writing about clean energy for more than a decade.

Recent Posts

“Trucks, chargers, batteries and green energy:” Fortescue throws AI and data centres into mix in pursuit of real zero

Fortescue settles bill over abandoned electrolyser factory, claims to be biggest builder of solar in…

20 August 2026

Chinese solar inverter executive says tea bag bribe a “cultural thing”, must now leave the country

A Chinese solar energy businessman hid a $20,000 cash bribe in a gift of tea…

20 August 2026

Gas pipeline giant to add another large solar farm and big battery to remote mining region’s power supply

Australia's largest gas pipeline company will build a new off-grid solar and battery project, to…

20 August 2026

“Bikies, criminals, strippers”: Shadow energy minister leaves industry crowd perplexed by speech and gas pledge

Shadow energy minister David Davis took a Gippsland conference crowd on a journey this week,…

20 August 2026

Solar Insiders Podcast: Why recycling used PV panels is not always the best option

Michelle McCann from PV Lab explains why we need to get used modules off Facebook…

20 August 2026

World’s largest offshore wind farm to also feature first directly integrated grid-scale battery

The world's biggest offshore wind project will also be the first to have grid-scale battery…

20 August 2026