AEI ISO Alerts 2018 Service Notice
June 05, 2018
Introduction
AEI provies a free ISO Alert service that sends email and text messages to subscribers whenever a regional grid is approaching a new annual peak in the current financial year. The financial year is defined to coincide with the Forward Capacity Market (FCM) auctions which set payments to load-serving entities (LSE) in exchange for their commitment to be available to meet the projected demand for electricity three years out. That delivery period is called the capacity commitment period (CCP) and is a one-year period from June 1 through May 31 of the following year. We use the same date range because ICAP tags and the demand charges that flow from them are typically fixed for the duration of a financial year.
In the course of providing this service, AEI collects real-time data published by regional transmission organizations (RTO) and independent system operators (ISO) in the U.S. and U.K by way of programming interfaces provided by each RTO or ISO. Depending on the service, the data may be available in 5-minute, 15-minute, 30-minute or hourly increments. In addition to the real-time loads, we also collect hourly forecast demand data which is typically available one to 10 days into the future.
2018 Parameters
The AEI ISO Alert service operates year-round but is typically dormant during U.S. winters and U.K. summers when the likelihood of annual peak hours is lower. In the U.S., AEI ISO Alerts will resume full services on Monday June 18th and continue until September 30th, 2018 and provide coverage for ISO New England, NYISO, PJM, Mid-Continent ISO (MISO), and CA-ISO. The first two or three weeks of the financial year - or "cooling season" in the U.S. - are useful for shaking out the service as it tries to establish a new reference level before it issues any alerts. We use 90% of the lowest peak load from the past 3 years of history to establish the reference level. The goal is to send out meaningful alerts that match the RTO or ISO forecasts such that any demand response is statistically justified. The commencement of our service is signaled by the delivery of a morning report before 9:30am each weekday which reiterates the RTO or ISO forecast for the day, combined with our assessment of the likelihood that a new peak might be reached. Our service will send text or email messages when loads are within striking distance of a new peak in the next few hours, and we use historical error rates for each of the ISOs when assessing our risk rating.
Historical Peaks by ISO
For reference, the following tables shows peak levels reported by each ISO for the past few years. Please note that these are technical peaks reported by the respective real-time service from each ISO and may not necessarily coincide with the peak annual hour.
ISO New England
FY | Peak Load (MW) | Date/Time & Temperature |
---|---|---|
FY2017 | 23,753 | 2017-06-13 16:20:00 (91.9 F (33.3 C)) |
FY2016 | 25,532 | 2016-08-12 14:50:03 (85.8 F (29.9 C)) |
FY2015 | 24,438 | 2015-07-29 16:55:00 |
NYISO
FY | Peak Load (MW) | Date/Time & Temperature |
---|---|---|
FY2017 | 29,801 | 2017-07-19 17:45:00 (90.3 F (32.4 C)) |
FY2016 | 32,188 | 2016-08-11 15:55:00 (90.0 F (32.2 C)) |
FY2015 | 31,205 | 2015-07-29 16:40:00 (93.0 F (33.9 C)) |
PJM
FY | Peak Load (MW) | Date/Time & Temperature |
---|---|---|
FY2017 | 145,638 | 2017-07-19 18:00:00 (94.1 F (34.5 C)) |
FY2016 | 152,177 | 2016-08-11 16:00:00 (93.2 F (34.0 C)) |
FY2015 | 135,315 | 2015-08-17 16:00:00 (Day-Ahead Bid) |
MISO
FY | Peak Load (MW) | Date/Time & Temperature |
---|---|---|
FY2017 | 120,215 | 2017-07-20 17:00:00 (93.0 F (33.9 C)) |
FY2016 | 120,367 | 2016-07-21 16:00:00 (93.0 F (33.9 C)) |
FY2015 | 119,602 | 2015-07-28 16:00:00 (98.1 F (36.7 C)) |
CAISO
FY | Peak Load (MW) | Date/Time & Temperature |
---|---|---|
FY2017 | 49,909 | 2017-09-01 17:00:00 (91.0 F (32.8 C)) |
FY2016 | 45,981 | 2016-07-27 17:00:00 (82.9 F (28.3 C)) |
FY2015 | 47,252 | 2015-09-10 17:00:00 (86.0 F (30.0 C)) |
To learn more about the Independent System Operators in the U.S.,
visit the FERC website.
Visit our AEI ISO Alerts web page to learn more or to sign-up for this free service. Contact us to incorporate our API into your downstream applications, or for additional information about how we can customize the alert service for your purposes.
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