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Old 12-28-2013, 02:28 PM   #51 (permalink)
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I *think* it basically just reduces demand, I mean path of least resistance and all that. We don't really know where the alleged failure point/mode is or why. Right now it is just too vague and we don't know if it is really a technical problem or a profit thing. The main power station has to be able to adjust to demand anyway, and from a high level this just reduces demand.

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Old 12-28-2013, 03:01 PM   #52 (permalink)
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certainly between houses it seems ok, and I'm not sure if the substations should care (basically a transformer AFAIK), and HI is much simpler than this diagram presumably.

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Old 12-28-2013, 07:58 PM   #53 (permalink)
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Quote:
Originally Posted by jamesqf View Post
Noy necessarily. Suppose it's noon on a weekday, and nobody's home in those 10 houses. Then they're not going to be using much power, so your solar has to find a market further away.

Now suppose 8 of the other 10 homeowners decide to install solar too...
You are correct that if the power isn't being used then it could be an issue but even if those 10 houses don't use it all (i am pretty sure they would, my neighbours are not what you would call thrifty with power consumption. Many have security lights on day and night ) then in the surrounding area there are much heavier daytime electricity consumers. Schools, shopping centres, retail outlets.
Compared to what the houses that have solar are able to feed into the grid these few large consumers would easily consume that and more.

Back when i could use Nearmap to get an aerial view, the number of houses in my suburb with solar was less than 10%. Many of those with small 1-1.5kw systems (4-6 panels). If the take up of solar ever reaches 80% then the power consumption versus production may be getting into the same ballpark.
Mind you to motivate that percentage of people to get it installed then the government would have to be paying the entire install bill and adding some sort of additional cash incentive, even then there would be those that complain .

I think the utilities big problem here is that if too many people feed solar derived power into the grid there aren't enough people willing to pay the 400% price increase the utility wants to sell it at (green electricity). They may have to settle for a 300% price increase and sell it as regular electricity. (Not sure if i got the percentages correct. Solar bought for 8c/kwH, sold as green electricity for 40c/kwH, regular electricity is 33c/kwH)
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Old 12-28-2013, 09:56 PM   #54 (permalink)
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I wouldnt worry. They are still using power even with their large array. Output and usage will vary throughout the year. Many folks still have bad credit and can not get approved for such a loan anyway, then others would rather buy a new hvac, water heater, etc. Still, all parties will use power from the plant.
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Old 12-28-2013, 11:40 PM   #55 (permalink)
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The Hawaii situation certainly sounds like a big mess.
On the bright side, 100% of daytime capacity coming from solar does mean less oil burnt. Better air for everyone, even the fuel burnt transporting the oil to Hawaii will have reduced.

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