DRWG JULY 31, 2013 | HOLYOKE MA

DOUG SMITH

MANAGER OF DEMAND RESOURCE ADMINISTRATION

July 19th 2013 OP4 Action 2 Initial Real Time Demand Resource Performance

Presentation Notes

• All performance based on meter data submitted for initial settlement.

• Meter data corrections are allowed until October 9.

• Net CSO is the amount dispatched and is typically CSO less the gross-up for losses

• Performance and Dispatched MW values are rounded to the nearest MW

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July 19th OP4 Event Background• During the entire week of July 15th New England extremely hot and humid

weather, and ISO-NE declared MLCC #2 at 10:45 AM on July 15th. ISO-NE forecasted the likely need for OP4 on three days that week, including Friday.

• On Friday morning the operating reserve projection was for a deficiency of 449 MW.

• OP4 Action 1 was declared at 12:00

• OP4 Action 2 was declared at 13:00 and all RTDR except for Maine zones was dispatched. Actions 3 and 4 (for all areas but ME) followed.

• Peak hour had been forecast to be HE 15:00 but actual peak hour was HE 17:00.

• OP4 Action 2 was cancelled at 20:30.

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RTDR Performance of Real Time Event of July 19th, 2013

Duration of the July 19th, 2013 Real Time Event (Local

Time) MW Dispatched (NET CSO)

Performance during 100%

Dispatch period (MW)

Percent Avg. Performance vs. Net CSO

Start Time (after 30

minute ramp) End Time

1:35 PM 8:35 PM 193 184 95%

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RTDR Performance on July 19th, 2013 Including all Intervals of Dispatch

Load Zone Net CSO (MW) Initial

Performance (MW)

Percent of Initial Performance to

Net CSO

CT 87 81 93%

NEMA 25 26 103%

NH 4 10 277%

RI 19 8 42%

SEMA 10 10 95%

VT 23 29 127%

WCMA 25 20 80%

Total 193 184 95%

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Initial Performance By Hour Ending, 7/19/2013

Load Zone

MW Dispatched (Net CSO)

HE 14*

Percentage Initial

Performance HE 14

HE 15

Percentage Initial

Performance HE 15

HE 16

Percentage Initial

Performance HE 16

CT 87 95 109% 97 111% 91 105%

NEMA 25 26 104% 32 124% 28 110%

NH 4 7 206% 11 300% 11 306%

RI 19 9 45% 10 53% 10 49%

SEMA 10 13 130% 14 135% 12 115%

VT 23 29 128% 31 136% 30 131%

WCMA 25 22 90% 23 93% 22 89%

Total 193 202 104% 217 112% 203 105%

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Initial Performance By Hour Ending, 7/19/2013 (Cont.)

Load ZoneMW

Dispatched (Net CSO)

HE 17Percentage Performance of HE 17

HE 18Percentage Performance of HE 18

HE 19Percentage Performance of HE 19

CT 87 88 101% 79 91% 64 73%

NEMA 25 27 106% 27 104% 25 100%

NH 4 10 278% 9 265% 10 267%

RI 19 10 53% 8 41% 6 30%

SEMA 10 9 94% 8 75% 8 76%

VT 23 29 128% 30 129% 28 124%

WCMA 25 20 81% 21 85% 18 73%

Total 193 194 100% 181 94% 159 82%

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Initial Performance By Hour Ending, 7/19/2013 (Cont.)

Load ZoneMW

Dispatched (Net CSO)

HE 20Percentage

Performance of HE 20

HE 21*Percentage

Performance of HE 21

CT 87 70 80% 69 80%

NEMA 25 23 92% 17 67%

NH 4 10 271% 10 285%

RI 19 6 33% 6 31%

SEMA 10 8 76% 7 68%

VT 23 28 123% 26 114%

WCMA 25 16 66% 15 60%

Total 193 161 83% 150 78%

* Performance for HE 14 and HE 21 include only intervals of dispatch.

RTDR Performance of Real Time Event of July 19th, 2013

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Questions