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Rooftop solar power may be flooding the grid

smh.com.au

11–20 of 99 posts

Re: Rooftop solar power may be flooding the grid

#11

An interesting alternative to battery storage opened in the UK this week - liquified air energy storage. I wonder if this may be helpful. https://www.theguardian.com/business/2018/jun/05/pioneering-...

There’s also places like Dinorwig: https://www.theregister.co.uk/2016/05/16/geeks_guide_electri...

Absolutely. The advantage of the liquified air approach is that you don't need a handy mountain. You could pop storage into city infrastructure quite easily.

Re: Rooftop solar power may be flooding the grid

#13
post #9

So solar power is irregular and has a peak production (mid day) far from peak consumption (start and end of business day)? News at eleven, water is wet and all that... edit: I should have said irregular through the day.

Solar power is not irregular at all, and is entirely predictable with a weather forecast. Unless Australia has an entirely different usage pattern to the rest of the developed world- businesses are perfectly aligned to use the solar power generated during the peak.

From the article: "the growing peak demand that comes at the end of the day, as the sun sets.". So the solar production of electricity peaks earlier than the end-of-day consumption peak.

Re: Rooftop solar power may be flooding the grid

#14

Reading this article, the first thing I wondered was, what does Australia have in terms of peaking power plants, which can come online—and, just as important, safely go offline—quickly to stabilize grid voltage? The second thing I was wondering is, where are the bitcoin miners? Assuming electricity prices are not being held artificially high, then when they start to come down, miners will start coming in. In fact, I…

I don’t think the economics work for mining only during power gluts. The cost of the mining equipment is high and needs to be amortized over the longest period possible.

Re: Rooftop solar power may be flooding the grid

#15

Interesting. In Australia do people regularly install rooftop solar installations without also installing battery units? What's the logic there? Just selling it to the grid?

Yeah, we had extremely generous feed-in tariffs for a while. It's generally net-metering too so pretty good value, even as the prices have come down. We have no shortage of sun most places, so it's pretty easy to almost wipe out your entire bill (except for the service/distribution fees, which have gone up a lot over the last few years, I guess to combat that).

Re: Rooftop solar power may be flooding the grid

#16
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Re: Rooftop solar power may be flooding the grid

#19
post #7

Reading this article, the first thing I wondered was, what does Australia have in terms of peaking power plants, which can come online—and, just as important, safely go offline—quickly to stabilize grid voltage? The second thing I was wondering is, where are the bitcoin miners? Assuming electricity prices are not being held artificially high, then when they start to come down, miners will start coming in. In fact, I…

Australia has some of the most expensive electricity in the world. There are no bitcoin miners of any size here. The electricity problems we are facing are pure corruption and negligence. Solar isn't the problem, its the lack of funding and poorly weighted energy markets that are crippling Australia's grid.

Solar isn't the problem, but the renewables situation is related. We had a Labor government with the Greens holding a balance of power from ~2010 to ~2013. The Labor party had, I believe, been opposed to a carbon tax up until that point. Then, likely because of pressure from the Greens, introduced a carbon tax.

The lesson there will not have been lost on big investors. If anyone invests in fossil fuel generation (ie, the economic option) then the Greens will find a way to destroy their profit margins at some point in the next decade.

And so, little serious investment in the energy sector seems to be taking place. I'm not aware of any big developments planned except an interesting hydropower project by the current government and creeping smaller-scale wind and solar as prices rise and justify their existence.

Re: Rooftop solar power may be flooding the grid

#20
home appliances should be aware of the home's solar panels somehow.

you could fill a washing machine and have it wait a few days and turn on if the solar panels are at full usage.

other things could operate at peak hours (dishwasher)

you could also pump water into a silo when it's bright outside.

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