The rapid increase in large load users attempting to connect to Texas’ electric grid is outpacing traditional transmission planning, according to the Electricity Reliability Council of Texas (ERCOT), the state’s grid operator.
Traditionally, connecting large facilities like factories to the grid involved predictable demand. However, the growing energy needs of large data centers, particularly those focused on artificial intelligence, necessitate updates in planning processes to maintain grid reliability, explained Kristi Hobbs, ERCOT’s vice president of system planning and weatherization, during a meeting with the Public Utility Commission of Texas (PUC).
In September 2024, ERCOT recorded 56 gigawatts in large load interconnection requests. This figure has now surged to 205 gigawatts. Experts caution that requested interconnections do not ensure construction, and the 205 gigawatts figure significantly exceeds ERCOT’s peak demand record of 85.5 gigawatts in August 2023.
ERCOT is responsible for planning transmission and serving current and future customers, Hobbs noted. Before the data center boom, power demand increases related to residential growth were distributed statewide. Now, Texas faces a concentrated demand from companies consuming more power than cities at single locations.
To address this, ERCOT aims to expedite interconnections for large energy users willing to reduce grid power usage under certain conditions. This cooperation would assist ERCOT in integrating more data centers onto the grid while pursuing grid upgrades and resource enhancements, Hobbs mentioned.
Hobbs highlighted that if large load users commit to reducing grid power during tight capacity, ERCOT could better forecast operations. Companies may add power through onsite plants, private agreements, or backup generators.
Currently, ERCOT monitors 205 gigawatts of large load interconnection requests. Over 70% of these requests are from data centers and around 10% from cryptocurrency mines. Many requests from the past year exceed one gigawatt per site, akin to half the power of the Hoover Dam. Requests from large energy users to connect by 2030 have increased 227% since last year.
PUC chairman Thomas Gleeson has emphasized the state’s intent to accommodate large loads. The presence of data centers has reshaped Texas’ energy landscape, creating tensions between developers and regulators over project energy demands and operational specifics.
ERCOT is revising planning procedures with utilities to evaluate multiple projects in a single study. The current planning system, effective when there were 40-50 large loads, now struggles with over 360 interconnection requests, Hobbs stated. ERCOT must ensure risks are addressed before connecting new loads.
Concerns include data centers’ ability to “ride through” grid disturbances without disconnecting. Many are designed to switch to backup power during disturbances, which could lead to broader outages. ERCOT aims to implement adequate requirements to protect both businesses and their neighbors.
Planning for large load integration continues to be a key topic of discussion, as stated by Gleeson. The PUC seeks clarity on current requests, with some companies experiencing approval delays.
PUC commissioner Courtney Hjaltman noted Texas’ reputation for fast interconnection processes. Hobbs noted that while transmission capacity building takes time, addressing planning, reliability, and procedure speed requires a comprehensive approach.
Original Story at insideclimatenews.org