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Ray's avatar

Brilliant writing agin Sheela!

This amplified something I've been thinking about recently. I'm sitting in a house with solar on the roof, but no battery. I'm exporting more electricity than I'm using from the grid. If I had battery storage, then I'd rarely use energy from the grid.

But I didn't get a battery for 3 reasons:

1) The payback period is 15 years (as opposed to 4 years for the solar)

2) I'm hoping that at some point in those 15 years, battery tech will advance and it will reduce the cost significantly, and mean that I will benefit financially from waiting (ie if battery costs halve, then I'll be better off waiting 7 years)

3) I believe that soon Australia will allow me to use my (future) electric car as the battery for my home (works for me, because I commute by public transport, and so my car sits in the garage 95% of the week). And a battery in an electric car is a much cheaper way of buying battery storage (a Tesla Powerwall has 13kWH storage, whereas a Model 3 has 60 kWH. With the pricing of the two, I'd be buying 4 batteries and getting the car free!

So my logic is that waiting for a while is the right thing to do

What you've made me think is that financially what I'm doing makes sense, but it makes no sense for the planet. I should buy the home battery now, despite the financial logic, because we can't wait for 3 or 4 years to start reducing emissions.

What the government/manufacturers could do that would really help is accelerate the Vehicle-to-Home power use. Because then I'd literally be losing money every minute that I didn't have an electric car.

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Rohini Vibha's avatar

Thank you for writing this and sharing your perspective and ways we can contribute and act. Something that really jumped out at me is how change and innovation that is feasible today is stymied by longstanding systems, no urgency to act, and well…apathy. Thank you for shaking us all to recognize that when it comes to climate, apathy is the wrong answer. Looking forward to Parts 2 & 3.

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