Tag Archives: battery

Storage for renewable energy

One of the criticisms always levelled at renewable energy is that it’s intermittent. Or in layman’s terms, unreliable.
In recent years, that failing has become less acute thanks to all sorts of batteries, but to supply the kind of energy the modern world needs, the capacity of batteries has to become bigger, much bigger.

The link below leads to an article that describes an energy storage system being developed by MIT [Massachusetts Institute of Technology]. The system uses a variation of hydro power…under the sea:

The idea is that you’d build humungous hollow concrete balls and place them on the ocean floor. When wind farms floating on the surface produced energy, the excess energy – i.e. the energy not immediately needed by the grid – would be used to pump seawater out of the balls. Then, when the wind farms stopped producing energy, water would be allowed back into the balls via generators. That water would turn the turbines which would produce electricity until the balls filled with water again.

The bigger the ball, the better. 😉 Ahem…

I love the simplicity of the MIT concept. My Dad was a mechanical engineer and I loved watching his prototypes working simply because the laws of physics or whatever made it so. Think gravity, or water always flowing downhill etc. As a result, I absolutely love the idea of this underwater hydro system. Nevertheless, achieving such apparent simplicity would not be cheap. As the article says, there is no ship currently powerful enough to tow even one ball from the land to its resting place on the ocean floor. The problem is not insurmountable, but the startup costs would be substantial.

I’m really looking forward to the next ten years when so many of today’s wild ideas become reality. I hope this is one of them.

cheers,
Meeks


Elon Musk wins his bet in South Australia!

As a long time fan of renewable energy, the latest news about Elon Musk fills me with glee. He bet that he could install a megabattery in South Australia in 100 days, and he’s come in ahead of schedule!

The story began last year when South Australia suffered a massive storm that destroyed infrastructure meant to allow Australian states to ‘share’ energy on a huge network. Due to some market manipulation on pricing, and a toothless watchdog asleep at its post [yes, AEMO I’m looking at you] South Australia suffered crippling blackouts, off and on, for weeks.

As the South Australia government is Labor and had invested heavily in wind farms, the Liberals in the national government went on a renewable energy bashing spree without offering up one, single practical solution. And then Elon Musk spoke up and shamed them all. He said that he could create a mammoth battery capable of storing the energy from the wind farms until needed. Then he bet the cost of the battery – $50 million dollars – that he could make good on his promise in 100 days. If he lost, he would carry the cost of the project.

Well guess what? -big grin- South Australia has a $50 million dollar bill to pay!

More importantly, all the dinosaurs in our government advocating for dirty coal power stations have been silenced, at least for a while.

You can read the whole story here:

https://futurism.com/elon-musk-megabattery-australia/

Today really has been a good day. Thank you, Elon Musk. 🙂

cheers

Meeks


Flow #batteries for electric cars are coming!

In a previous post I talked about possible innovations that might make electric cars more convenient in the future. Well here’s another one, and it could be the most effective of the lot:

https://futurism.com/new-instantly-rechargeable-battery-deals-a-fatal-blow-to-fossil-fuels/

In a nutshell, these batteries can be instantly recharged by replacing the fluid electrolytes. Thus, instead of topping ‘er up, you’d drain out the old and replace it with new. The ‘stale’ fluid electrolytes could then be taken away and recharged using one of the renewable energy sources. Or maybe recharged at the service station itself.

Flow batteries aren’t new, but until now, they haven’t been efficient enough for commercial use. The Ifbattery avoids most of the problems of the old technology while being cheap to make and safe to use. And just think of all the new jobs that will mushroom from this renewable technology!

cheers

Meeks


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