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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Buying guide28 April 20268 min readHow to read a solar quote without getting burned
Two quotes for the same roof can differ by $6,000, and the cheaper one is often the more expensive choice. A line-by-line guide to what actually matters on a solar proposal.
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For business7 April 20269 min readCommercial solar payback, explained for business owners
For a business, solar is not a green gesture. It is a capital decision with a return you can model. Here is how commercial payback really works, including the depreciation lever most quotes ignore.
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Energy audits18 March 20266 min readWhat an energy audit actually finds (and why it pays for itself)
Before you spend on solar or storage, an audit tells you where your energy is really going. Often the cheapest kilowatt-hour is the one you stop wasting in the first place.
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Design25 February 20266 min readNorth, south, east or west: where your panels should really face
The old rule was face north for maximum output. With today's tariffs and battery storage, the best orientation is often the one that matches when you actually use power.
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Batteries4 February 20265 min readWill my solar keep the lights on in a blackout? The honest answer
Most people assume a home with solar rides through a blackout. Without the right setup, it does not. It shuts down with the grid. Here is what backup actually requires.
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