Warwick Johnston

Rooftop solar systems just keep getting bigger – and here’s why

There’s one Australian solar market statistic that has risen again and again, without falling since 2010: average system size. What’s…

February 8, 2024

What does it take to be a top volume solar retailer?

Key takeaways from the latest annual SunWiz Australian PV Market Report to help solar retailers climb the ranks.

January 29, 2024

Heat pumps: The fastest growing solar technology you’re probably overlooking

Air Source Heat Pumps, which extract latent heat from the atmosphere and pump it into a water storage tank, are…

November 23, 2022

How long will your solar panels last, and how well will they perform?

Millions of low-quality solar panels have been installed on Australian roofs, mostly because mums and dads lacked the expertise to…

March 2, 2017

Why Aussie homes may be better off with smaller battery banks

You’re thinking about installing batteries for your solar PV system, but aren’t clear about how much storage capacity you need.…

September 28, 2016

Is it worth charging off-peak to sneak in a second cycle for your battery?

The idea of sneaking in a battery cycle first thing in the morning doesn’t bear fruit, because most households are…

September 13, 2016

When should I discharge my battery to maximise my return on investment?

Should battery storage be discharged during peak only, and is it worth discharging during off-peak periods in order to maximise…

September 7, 2016

Why battery storage doesn't pay without rooftop solar

“Arbritrage” sounds like a brilliant idea, but is it really worthwhile charging a battery from the grid at off-grid prices?

August 31, 2016

How to sell battery storage to early adopters

There’s plenty of early adopters out there who will buy battery storage regardless of the return on investment, because early…

August 24, 2016

Why most commercial PV sales don’t proceed (and what to do about it)…

It’s a well-established trend: the Australian solar industry is increasingly turning to sales of commercial PV systems.

April 26, 2016