Re: Another solar manufacturer gives up

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Article #2216

#2216

From: jg
Date: Sat, 09 Mar 2013 00:46

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On 9/03/2013 7:17 AM, jimp@specsol.spam.sux.com wrote:
> In sci.physics jg <jg@nospam.com> wrote:
>> On 9/03/2013 6:03 AM, Petzl wrote:
>>> On Sat, 09 Mar 2013 02:01:48 +1030, Surfer <no@spam.net> wrote:
>>>
>>>> On Fri, 08 Mar 2013 04:04:02 GMT, usenet@mantra.com and/or
>>>> www.mantra.com/jai (Dr. Jai Maharaj) wrote:
>>>>
>>>>>
>>>>> Another solar manufacturer gives up.
>>>>>
>>>> But hundreds of others remain in business.
>>>>
>>>> http://en.wikipedia.org/wiki/Solar_power_by_country
>>>>
>>>> "....China has over 400 photovoltaic (PV) companies..."
>>>>
>>> Problem with solar is it's limited to a few hours a day at enough peak
>>> to actually save power as in generate it for home use
>>> Generation starts weak and goes weak outside of the midday target
>>>
>>
>> Yes it's a problem, as all methods of generation have problems.
>>
>> But not a big enough problem that solar isn't still a very useful tool
>> in producing electricity.
>>
>> Typically a house produces 1kWh for 6 hours, when no one is home it goes
>> to the main user - industry, which operates mainly at those same hours.
>
> Peak electrical demand occurs in the late afternoon and doesn't go
> away until well after sunset.
>
> The main users are households and lighting in general.
>
> Here is an example for California:
>
> http://www.caiso.com/SystemStatus.html
>
> This is typical no matter what the area.
>
>
>
The highest peak demand happens at night, for about 4 hours.

The system has to provide 3/4 of that demand for about another 12 hours 
in daylight, then much less for the remaining 8 hours.

Would if solar panels could cover all demand and better if it was at 
peak, but they do contribute for 6 hours if not at the highest demanding 
4 hours of day. Solar water heaters for instance do a better job of that.

They are only part of the answer, but fossil fuels are the question.

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Subject: Re: Another solar manufacturer gives up
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