IEEE Power & Energy Magazine - March/April 2021 - 18

Operational
Security

The Case of Texas

By Julia Matevosyan, Shun Hsien Huang,
Pengwei Du, Nitika Mago, and Rochie Guiyab

T

THE ELECTRIC RELIABILITY COUNCIL
of Texas (ERCOT) is the independent transmission system operator that manages the flow of
electric power to serve 90% of the state's electric load. ERCOT's system-wide load peaked at
74,820 MW on 12 August 2019.
The ERCOT region is one of four electric
grid interconnections in North America and
has only a limited connection of 1.2 GW of
direct current ties to its neighboring grids. It
manages power on an electric grid that includes
more than 46,500 mi of transmission lines and
more than 650 generation units. In the last 15
years, ERCOT has experienced significant
growth of renewable generation, most of which
is wind generation resources connected to the
transmission grid. Looking at the new generation interconnection requests, wind and solar
are expected to be the primary generation
resources added in the future. As of September 2020, ERCOT has an installed wind generation capacity of ~25 GW and a solar power
generation capacity of ~3.6 GW (Figure 1) connected to the transmission grid. An additional
~13.4 GW of planned wind projects and nearly
16 GW of planned solar projects with signed
interconnection agreements are expected to
connect to the transmission grid before the
end of 2023. There is also about 650 MW of
residential and commercial rooftop solar in
ERCOT as well.
Digital Object Identifier 10.1109/MPE.2020.3043611
Date of current version: 19 February 2021

18

ieee power & energy magazine

1540-7977/21©2021IEEE

march/april 2021



IEEE Power & Energy Magazine - March/April 2021

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