If your house is getting too hot should you invest in heat reflective paint or solar panels?
It can get bloody hot in summer thanks to the sun blazing down on our roofs and making them hot enough to not only fry an egg, but some bacon as well.
This post is about stopping the summer sun heating your roof, turning your home into a metaphorical oven. [Read more…]
Aggregated, wireless power transfer can enable massive storage to be rolled out very quickly and very cheaply.
These are, quite literally, dark days for national energy security.
The South Australian grid is in disarray and blackouts threaten to engulf other states as soon as summer rolls around again or adverse weather conditions strike. [Read more…]
How to charge GST on solar is not obvious. Read on to discover why…
Let’s say you have just been quoted a nice round $7,000 for a brand spanking new rooftop solar system with 5 kilowatts of panels. With Australia’s 10% Goods and Services Tax, you might expect the GST portion of that quote to come to $700.
Or, if you didn’t go to school in Toowoomba like I did, you might actually think GST would be $636.36 because that would be 10% of $6,363.64 which would then add up to a nice round $7,000. (Remember kids, always pay attention in math class if you don’t want to end up as a lowly solar blogger.) [Read more…]
The BYD B-Box Battery. Is it the perfect B-Boy Beat-Box Battery?
BYD is the world’s largest manufacturer of rechargeable batteries Those three letters stand for Build Your Dreams and apparently their dream was to build a battery box and sell it in Australia because that’s exactly what they’re doing with their B-box battery systems. [Read more…]
Tindo Solar is now owned by SA company ‘Cool or Cosy’.
Tindo Solar, Australia’s only manufacturer of Solar panels has been bought by South Australia’s insulation, solar installation, and energy efficiency company Cool or Cosy.
The deal was announced on… Well actually, it hasn’t been announced yet1. But since I’m from Queensland, obviously I know Julian Assange, so you can trust me to know all the secrets. [Read more…]
Enphase panel monitoring is a great feature. But some Enphase installers flat out refuse to enable it.
There are many people in this world who enjoy monitoring the output of their rooftop solar systems.
But other people – not so much. For example, I don’t think my parents have checked the output of their system since they got it. My father just looks at the electricity bill every three months and grunts, “Power bill low. Is good.” And then goes back to making stone tools.
But for those who enjoy the heady pleasures of solar system monitoring, modern technology can provide the fix you’re looking for. [Read more…]
OneSolar make a lot a lot of claims on their website that just don’t stack up.
When it comes to choosing solar panels and inverters, we recommend sticking to well known brands.
Over the years we’ve seen lots of obscure panel brands hit Australian shores, often with slick websites, and almost always with dubious claims of being ‘engineered’ in anywhere-but-China.
Our experience is that the quality of these mysterious brands is often poor, and if they fail a few years down the line it can be very hard to find the company that originally imported or manufactured them. [Read more…]
Note from Finn:
This post is Ronald’s considered opinion of Elon Musk’s offer. My personal opinion (with caveats) is that we should accept the offer. I’ll publish a post later today with my reasoning.
Elon Musk has offered to sell South Australia large scale Tesla battery storage of 100 megawatt-hours or more. He says it will cost $250 US dollars at the “pack level” per kilowatt-hour which is around $333 at today’s exchange rate. What’s more, he has promised it will be installed within 100 days of the contract being signed or it’s free.
This may be the best offer that has ever been made for large scale lithium battery storage. But despite the small chance we would get it for free, I think our reply should be a polite, “No thank you.”
South Australia doesn’t need a large amount of battery storage to solve its current electricity supply problems and so there are better alternatives to spend the money on. If in the future it turns out it would be useful we can get it then and it should be even cheaper. [Read more…]
High end manufacturers SunPower And SMA have chosen to manufacture in China. But they aren’t exactly advertising the fact.
China produces far more solar panels, far more solar inverters, and god knows how many more batteries than any other country in existence. China has been called the workshop of the world1 and has repeatedly shown itself to be capable of producing high quality, reliable goods. [Read more…]
DC’s not pinin! DC’s passed on! This battery system is no more! DC has ceased to be! It has expired and gone to meet its maker! DC’s kicked the bucket! DC has shuffled off its Tesla coil, run down the charge, and joined the bleedin’ choir invisible! THIS IS AN EX-BATTERY!
I was just relaxing by listening to the musical version of the Massacre of Mankind when I suddenly got some news from the solar grapevine1 concerning the Tesla Powerwall 2. To cut a short story even shorter:
The DC version of the Powerwall 2 is dead!
Long live the AC version!
If it ever gets here!
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