The Guwing Green Journal
Field notes on
clean energy.
Straight-talking, engineer-led writing on solar, batteries and energy efficiency. No jargon, no sales spin. Just the way we would explain it to a mate over the fence.
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Batteries10 October 202613 min readCan Solar Batteries Be Installed Outside? What Australian Homeowners Need to Know
Can solar batteries be installed outside? Compare an external wall, garage or enclosure under NSW's AS/NZS 5139 battery rules.
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For business9 October 202613 min readHow Efficient Are Commercial Solar Panels?
How efficient are commercial solar panels? Find out how panel technology, temperature and roof space affect system performance here!
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Buying guide1 October 202614 min readUpgrading Your Solar System? Here's What You Should Know
Need to plan a solar power upgrade? See how system age, energy use, rebates and network requirements can affect your next step.
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Solar basics30 September 202615 min readWill Hail Damage Your Solar Panel?
How much hail can solar panels withstand? Learn about solar panel hail damage, safety steps, warranties and replacement options here.
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Buying guide21 September 20269 min readWhat Does SAA Accreditation Actually Mean for Your Solar Installer?
Manufacturer warranties can be voided by the wrong installer. Here's how to confirm you have an SAA accredited solar installer.
Read article- Solar basics20 September 202611 min read
What Is a Hybrid Inverter and How Does It Work?
What is a hybrid inverter and is it worth it? See how it manages solar and batteries, what affects its cost, and when you may need one in NSW.
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For business14 September 202610 min readIndustrial Solar Panels in NSW: Scale, Load Profiles & The 2026 Policy Shift
Facility managers and business owners frequently ask whether a factory, warehouse, or cold storage plant needs a standard commercial system or a true industrial-scale solar setup. Here is what separates the two, and what the 2026 SRES threshold change means for procurement timing.
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Batteries5 September 202613 min readBest Solar Battery in Australia (2026): Compared by Engineers
There is no single best battery, only the right one for your evening load. Here is how the leading systems compare on usable capacity, warranty throughput, AS/NZS 5139 clearances and the number that actually matters: price per usable kWh after the rebate.
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Buying guide4 September 202614 min readTop 5 Solar Inverters in Australia (2026): What Separates the Good Ones
Installer polls and engineering reviews rank inverters on completely different criteria, which is why the answer changes with every search. Here are the five brands that hold up across both, plus the NSW network rules that quietly decide what you are allowed to install.
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