ERCOT is the Electric Reliability Council Of Texas. which manages the
flow of electric power to approximately 20 million Texas customers -
representing 85 percent of the state's electric load and 75 percent of the
Texas land area.
Demand Response in ERCOT
ERCOT has two Demand Response programs:
-
Load Acting As a Resource (LaaR)
-
Emergency Interruptible Load Service (EILS).
LaaR
LaaR is a program that allows customers to bid their Demand Resources into the
wholesale ancillary services market, for which they are paid the market price
for cleared bids. This program is suitable for large loads and customer
requirements are greater than other DR programs. The program requires a 10
minute response time. Customers are paid the daily market clearing price for
their cleared bid, whether they are called on to provide services or not. LaaR
customers must meet substantial communication and testing requirements to
become qualified to participate, and are subject to Under Frequency Relay (UFR)
control of load resources.
To learn more about ERCOT Demand Response programs click
here.
EILS
EILS is an Emergency Interruptible Load Service that ERCOT procures to maintain
grid reliability and reduce the likelihood of the need to shed firm load. ERCOT
may procure up to 1000 MW of capacity for each contract period. Customers can
not participate in ERCOT's LaaR program and EILS
concurrently. Contract Periods for EILS capacity are:
-
June through September
- October through January
- February through May.
ERCOT will request bids and determine base load from Qualified Service Entities
(QSEs), for each interested Resource, prior to each EILS contract period. Bid
awards are at ERCOT's sole discretion with consideration to least cost bid per
MW of capacity; geographic locations; effects on zonal or local congestion;
and historical bids. In order to participate, an EILS Resource must declare a
minimum amount of 1MW for each time period committed.
An EILS customer has a 10-minute response time and subject to a maximum of two
(2) dispatch instructions per EILS Contract Period, and a maximum of 8 hours of
dispatch instructions per EILS contract period or until released by ERCOT. A
customer can select the hourly time periods they can participate from the
following options:
-
Round the Clock (24 hours every day)
-
Business Hr 1 (8am-1pm M-F)
-
Business Hr 2 (1:01pm - 4pm M-F)
-
Business Hr 3 (4:01pm - 8pm M-F)
- Non-Business Hours - All other hours
To learn more about ERCOT Demand Response programs click
here.
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