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Breaking down a record-setting day on the Texas grid

blog.gridstatus.io

31–40 of 149 posts

Re: Breaking down a record-setting day on the Texas grid

#31

Earlier quoted context omitted.

Texas has quite a bit of utility-scale commercial batteries now.

It is the largest market for utility scale storage in the US at the moment, rivaling California.

We have lots of variable production (wind and solar) and those peaks don't line up with peak load (generation peaks in the morning and peak load is noon-8pm). So utility scale batteries to capture the morning excess and discharge in the afternoon makes perfect sense.

Re: Breaking down a record-setting day on the Texas grid

#32
post #26
post #13

Earlier quoted context omitted.

My rush hour went off yesterday afternoon and the temp rise made me doze off and i woke up sweating with it set to 80 degrees. I'm in the process of canceling, it's not easy. I used the chat and someone is going to send me an email (which says it's canceled?) within 24-48 hours. Harder to turn off than anything else in recent memory. If anyone has a pro tip on an easy way to cancel let me know.

Just connect the wires manually To turn on the fan and AC, you'd connect R and Y (or R, G, and Y on systems where the thermostat controls the fan).

You can change the temperature after rush hour starts. I'm talking about turning off the rush hour crap entirely.

Re: Breaking down a record-setting day on the Texas grid

#33
post #2

If I'm reading this right, my thermostat's "rush hours" seem to be scheduled for gross load peak. They then seem to usually end (and kick my AC back to a desired temp causing a ton of usage) right around net load peak...which this is now reporting is when energy prices go through the roof. So basically the "rush hour" program has likely been costing me more money than if I just ignored them to begin with up to this p…

After giving my electricity provider access to my EV for optimal charging pretty much killed the 12v battery (they were pinging it hundreds of times an hour, meaning it never went to sleep), I'm never going to give them access to anything.

Re: Breaking down a record-setting day on the Texas grid

#34
post #11

So the day peaked at 85 GW of load, and they got down to only 130 MW of spare capacity. Just 0.15% from running out. And they never asked for conservation? Is it normal to go that close to the edge without trying to cut load?

No. The 130 MW remaining capacity was the amount available "in SCED within 5 minutes", which in super simplified terms means "the amount of energy available quickly and economically".

The grid actually had ~4 GW spare capacity (according to the graph) if it was needed, but it wasn't part of SCED.

Re: Breaking down a record-setting day on the Texas grid

#35
post #13
post #2

If I'm reading this right, my thermostat's "rush hours" seem to be scheduled for gross load peak. They then seem to usually end (and kick my AC back to a desired temp causing a ton of usage) right around net load peak...which this is now reporting is when energy prices go through the roof. So basically the "rush hour" program has likely been costing me more money than if I just ignored them to begin with up to this p…

My rush hour went off yesterday afternoon and the temp rise made me doze off and i woke up sweating with it set to 80 degrees. I'm in the process of canceling, it's not easy. I used the chat and someone is going to send me an email (which says it's canceled?) within 24-48 hours. Harder to turn off than anything else in recent memory. If anyone has a pro tip on an easy way to cancel let me know.

When I had them hooked into my EV, I literally had to change my Kia password when they ignored my requests to disable the feature.

Presumably they similarly have some sort of cloud permission into your thermostat, which can be disabled by changing the password, resetting the device, or worst case scenario, get a new thermostat.

Re: Breaking down a record-setting day on the Texas grid

#38

Earlier quoted context omitted.

I was just chatting with a friend on how we haven't received the conservation emails like we have in previous years. This year has not been as extreme either as the DFW metroplex has not had the extended 100°+ days. We've just had a run of 3 or 4, but we've had 30+ consecutive days in the past.

Last year was an extraordinarily long and hot summer.

The year before was worse to me, but followed by another one just as bad it just made it feel worse. I don't remember '23 being as humid as '22, but maybe that's just faulty memory shorting out from the humidity???

Re: Breaking down a record-setting day on the Texas grid

#39
post #18

Earlier quoted context omitted.

I was just chatting with a friend on how we haven't received the conservation emails like we have in previous years. This year has not been as extreme either as the DFW metroplex has not had the extended 100°+ days. We've just had a run of 3 or 4, but we've had 30+ consecutive days in the past.

Austin here, we’re enrolled in a conservation plan through Austin Energy whereby they control our smart thermostats (Nest in our case). These “Rush Hour” notices have been firing a lot over the past two weeks; perhaps only two days where we haven’t been asked to conserve somewhere between 3-6 hours a day.

Are you sure? I just looked and there was a Rush Hour for Friday, Monday, Tuesday, and today. The last one before that was Aug 8. O16 days total this summer, the first being June 13.

Re: Breaking down a record-setting day on the Texas grid

#40
post #11

So the day peaked at 85 GW of load, and they got down to only 130 MW of spare capacity. Just 0.15% from running out. And they never asked for conservation? Is it normal to go that close to the edge without trying to cut load?

No. The 130 MW remaining capacity was the amount available "in SCED within 5 minutes", which in super simplified terms means "the amount of energy available quickly and economically". The grid actually had ~4 GW spare capacity (according to the graph) if it was needed, but it wasn't part of SCED.

But if you can't get more in under 5m, then if the demand goes up that much in under 5m you hit the point of load shedding to protect the grid right?

The graph showed it increasing fast just before. Is it so unthinkable it could jump again?

Or is that they could get more (non-SCED) in time, it would just cost a ton so it's avoided if at all possible?

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