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hill
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Re: California Solar Generation Record!

Wed Oct 22, 2014 5:02 am

drees wrote:So I noticed that yesterday the 21st had Thermal (non-imported anyway) production drop to only 1.3 GW at 12PM out of a total demand of 16.8 GW. If San Onofre were still running with 2 GW of production, California could have shut down all local thermal generation for a couple hours.

http://content.caiso.com/green/renewrpt ... sWatch.pdf" onclick="window.open(this.href);return false;
http://content.caiso.com/green/renewrpt ... sWatch.txt" onclick="window.open(this.href);return false;

Does that mean that it could actually be cleanest to charge your car during the day now with all the solar that's on the grid? I am very curious as to what the generation makeup of imports is at this point - is it gas? Coal? Hydro?
as a whole? or individual communities. Makes a difference. We charge during day time - and still produce enough PV during daytime to run the meter backwards while charging.
.

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JeremyW
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Re: California Solar Generation Record!

Wed Oct 22, 2014 7:34 am

That graph on the first page of the daily renewables watch is wrong. Look at the second page. Load isn't that low on a Tuesday! Check back in spring on a Sunday though, you'll get something close.
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DaveEV
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Re: California Solar Generation Record!

Wed Oct 22, 2014 8:23 am

Darn, looks like the charts have been wrong since the 14th at least. Thermal appears to be missing quite a bit of generation.

Jeremy, you don't know who can fix them, do you?

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DaveEV
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Re: California Solar Generation Record!

Tue Oct 28, 2014 12:10 am

Heh, look at the charts/data for yesterday - thermal plants were sucking in 2 GW!

http://content.caiso.com/green/renewrpt ... sWatch.pdf" onclick="window.open(this.href);return false;
http://content.caiso.com/green/renewrpt ... sWatch.txt" onclick="window.open(this.href);return false;

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RegGuheert
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Re: California Solar Generation Record!

Tue Oct 28, 2014 2:30 pm

drees wrote:...thermal plants were sucking in 2 GW!
That's gonna leave a mark! ;)
RegGuheert
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DaveEV
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Re: California Solar Generation Record!

Mon Feb 16, 2015 12:05 am

Solar's been peaking around 5 GW lately, so over 1.2 GW more solar PV on the CA grid than last year.

But today, I noticed some strange jumps in demand which normally only show up during early morning hours, but today occurred during peak solar hours.

Looks like there's an extra GW of demand popping up - I wonder where it's going?

(Screengrab below taken from http://www.caiso.com/Pages/TodaysOutlook.aspx" onclick="window.open(this.href);return false; on Feb 15 2015 11:00PM)
Image

Lopton
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Re: California Solar Generation Record!

Mon Feb 16, 2015 10:14 pm

drees wrote:But today, I noticed some strange jumps in demand which normally only show up during early morning hours, but today occurred during peak solar hours.

Looks like there's an extra GW of demand popping up - I wonder where it's going?
May be a pumped storage facility? http://en.wikipedia.org/wiki/Pumped-sto ... lectricity
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DaveEV
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Re: California Solar Generation Record!

Mon Feb 16, 2015 11:24 pm

Seems unlikely, otherwise we'd see a corresponding dip somewhere else. If I had to guess I'd guess it's grid exports.

smkettner
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Re: California Solar Generation Record!

Mon Feb 16, 2015 11:27 pm

Any sudden dips or spikes on that page should mostly be ignored.

Page says: These displays are provided for information only and do not represent real-time system operating conditions.
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JeremyW
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Re: California Solar Generation Record!

Tue Feb 17, 2015 6:55 am

smkettner wrote:Any sudden dips or spikes on that page should mostly be ignored.
Yes. Load is calculated as the sum of generation output and imports on tie lines from neighboring utilities. A spike up in load is usually caused by the momentary loss of communication with a generator.

I can't give specifics on why you are seeing other load plautus, but Lopton is correct.
drees wrote:If I had to guess I'd guess it's grid exports.
California is a large importer of power. Further, exports would not show up as load as stated above.
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