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Key developments
ERCOT warns large loads failed voltage tests
Reuters, as reported by Slashdot, said ERCOT reviewed about 20 gigawatts of large-customer interconnection activity, including eight projects totaling roughly 3.9 gigawatts expected online before July 1. During voltage-disturbance testing, four groups of large electricity users, including data centers and crypto facilities, disconnected abruptly from the Texas grid. ERCOT's simulations suggested each group could trigger more than 5,000 megawatts of demand tripping under certain fault conditions, equivalent to the load of a large city.
Why it matters
Texas is adding enough large loads fast enough to create immediate reliability risk before summer peaks.
Sources & driving stories
SLASHDOT
Slashdot coverageIREN secures transmission for 800MW South Australia campus
Yahoo Finance reported that IREN Limited announced a June 3 transmission connection agreement for a planned 800MW data center campus in Bundey, South Australia. The deal secures four 330kV feeder exits from the local substation, which IREN says avoids costly network upgrades and gives the project a path to energization by 2028. The company is positioning the site as AI infrastructure tied to Asia-Pacific fiber routes and renewable power.
Why it matters
It shows grid access, not just land or chips, is becoming the main constraint in new AI data-center buildouts.
Sources & driving stories
YAHOO · Jeffrey Neal Johnson
Yahoo coverageCounties and lawmakers tighten data-center siting rules
Northern Public Radio reported that Champaign County, Illinois, unanimously approved a one-year moratorium on large-scale data center development while a task force drafts zoning standards. Similar pauses or bans have been adopted elsewhere, including Hill County, Texas; Manitowoc County, Wisconsin; and Huron County, Michigan, while state lawmakers are also considering tighter rules on rates and incentives. The report shows local permitting and land-use controls are becoming a major bottleneck for new projects.
Why it matters
Permitting and zoning are emerging as a decisive constraint on where data centers can actually be built.
Sources & driving stories
NORTHERN PUBLIC RADIO (WNIJ)
Northern Public Radio (WNIJ) coverageWorth noting
WORTH NOTING
Business Insider maps 1,416 US data centers
The new searchable database provides a fresh baseline for where the US buildout is concentrated and how companies dispute permit-based counts and power estimates.
WORTH NOTING
Nvidia and SK target gigawatt AI cloud
The South Korea partnership points to another large-scale AI infrastructure market coming online, with the first factory targeted for 2027.
WORTH NOTING
Nashville Zoo petition tops 288,000 signatures
The rapid signature count shows how quickly opposition can mobilize against a single proposed data center project.
Still unclear
OPEN QUESTION
Will ERCOT tighten large-load interconnection rules?
The voltage-test failures suggest Texas may need stricter ride-through or disconnection standards before summer peaks.
OPEN QUESTION
Can power-secured campuses reach 2028 on schedule?
IREN's deal highlights how grid access is being monetized, but execution risk remains high for very large AI sites.