Grid Interconnection
Definition
Grid interconnection is the process by which a large load, generator, storage system, or data center connects to the electric grid. It includes utility studies, engineering upgrades, interconnection agreements, construction timelines, cost allocation, and operational requirements.
Why it matters
AI infrastructure is increasingly limited by access to power, not just chips or real estate. A data-center project can have land, capital, and tenants but still be delayed for years if interconnection studies, transmission upgrades, or utility approvals lag. Interconnection status is now a major valuation and execution-risk driver.
Common misconceptions
- •Having nearby power lines does not guarantee usable interconnection capacity.
- •Utility approval can be a longer bottleneck than data-center construction.
- •Power procurement and physical interconnection are related but distinct issues.
Technical details
Process steps
Projects typically submit an interconnection request, enter study phases, receive cost estimates for upgrades, negotiate agreements, and complete required construction before full service.
Large loads may need substation upgrades, transmission upgrades, distribution reinforcement, protection equipment, and utility coordination.
Risk allocation
Interconnection agreements determine who pays for upgrades, when capacity is available, what operational limits apply, and what happens if costs or timelines change.
Tenant contracts may allocate delay risk between data-center owner, power provider, and customer.
Diligence questions
Is interconnection approved, studied, under construction, or merely requested?
What upgrades are required, who pays, and what is the critical path?
Is the project exposed to queue delays, curtailment, or conditional service limits?