Overview
Large load interconnection requests are entering transmission planning processes at an unprecedented rate, driven especially by data centers and artificial intelligence loads. This report provides practical guidance for utilities, regulators, transmission planners and industry stakeholders working through the technical, planning and reliability implications of these large load requests.
The report is designed to help improve and harmonize utility practices for processing, studying and assessing large load interconnection requests. It also serves as a reference for state regulatory bodies seeking to ensure that utilities are fully evaluating the potential impacts of large loads on grid reliability and existing customers.
Why it matters
Large load growth is placing new pressure on the bulk power system. While data centers can offer significant economic benefits and long-term revenue opportunities, they can also create technical challenges that require rigorous engineering analysis and due diligence.
The report highlights that speculative interconnection requests, limited transparency around available transmission capacity, and opaque load interconnection processes can make it difficult for utilities and system operators to determine which projects are credible and how they should be studied.
Key challenges explored
The report examines several issues associated with large load and data center interconnections, including:
Rapid growth in data center and AI-related electricity demand
Speculative load interconnection requests
Limited transparency in transmission capacity and interconnection queues
The need for fair and efficient study processes
Potential impacts on bulk power system reliability
Data and modeling requirements for large load customers
Load ramping, variability and uncertainty
Power quality, harmonic emissions and protection system impacts
Cost allocation, customer equity and stranded asset risk
Technical requirements for large load interconnections
Questions this resource helps answer
This resource helps utilities, regulators and stakeholders consider questions such as:
How should utilities process and assess large load interconnection requests?
What information should large load customers provide during the interconnection process?
How can utilities distinguish credible projects from speculative requests?
What technical requirements should be considered for large loads?
What studies may be needed to assess reliability impacts?
How should planners evaluate power quality, load variability and dynamic performance?
How can state regulators support fair, transparent and reliable interconnection outcomes?
What the report covers
The report includes guidance across the full large load interconnection process, from background context and reliability challenges through to process improvements, technical requirements, modeling considerations, interconnection studies, risk mitigation options and regulatory considerations.
Key sections include:
Background on large load interconnections
Grid reliability challenges for data center interconnections
Challenges with the large load interconnection process
Process improvements for large load interconnections
Technical interconnection requirements for large loads
Large load modeling considerations
Large load interconnection studies
Bulk power system risk mitigation solutions
State regulatory proceeding considerations
Potential federal actions to address large load risks
Who this resource is for
This report may be useful for:
Utilities and transmission providers
Transmission planners and planning coordinators
State regulators and policymakers
Large load customers
Data center and industrial facility developers
Grid operators and reliability coordinators
Energy consultants and technical advisors
Stakeholders involved in load interconnection policy, planning or reliability studies