Large Load Interconnection

Connecting a factory used to be a local matter between the customer and its utility. Gigawatt-scale AI campuses changed that. A 1 GW data center can ramp from zero to hundreds of megawatts in months, with synchronized, fast-changing demand that affects reserves across neighboring grids. Regulators now treat these loads much as they treat power plants.

The rules are changing fast

As of October 2026, there is no single national rule in the United States. Instead:

FERC issued six show-cause orders to the RTOs on June 18, 2026, covering study processes, cost protection, co-location, flexible loads and nearby generation, and signalled roughly 50 MW at transmission voltage as a reasonable large-load threshold.
PJM is moving to a "bring your own capacity or be curtailed first" model; SPP runs a 90-day HILL study with a conditional, curtailable service; MISO has proposed a 120-day study for large loads paired with generation.
ERCOT follows Texas law (SB 6): loads of 75 MW and above face a study fee, financial security and curtailment obligations.
NERC is moving from guidance to mandatory reliability standards for computational loads, due to FERC by December 31, 2026.

This is a fast-moving area; the situation summarized here is as of October 2026.

Technical requirements look like renewable integration

The requirements emerging for large AI loads closely mirror those placed on wind and solar plants over the past decade — the same grid physics, now on the demand side. This is where IWE's background in grid integration of renewables applies directly:

Ride-through — staying connected through voltage and frequency disturbances rather than tripping to backup.
Voltage and reactive power — supporting, or at least not degrading, voltage stability during fast ramps.
Flexibility — curtailable load and fast response, the demand-side equivalent of frequency response.
Power quality — harmonics and flicker from large power-electronic loads.
Accreditation of co-located generation — how much on-site supply is truly firm under stress, using ELCC-style methods.

Speed has a price

Ninety-day studies now exist, but only for loads that bring firm supply, post serious financial security, or accept curtailment. Who pays for network upgrades is shifting from broad socialization toward direct assignment to the large load. Interconnection strategy is now a core part of the project business case.

In India

Under India's General Network Access framework, a data center reserves network access once, sized to its actual peak drawal. Over-booking across state and central transmission layers adds cost without adding capacity. We design one right-sized connectivity path with a deliberate backup arrangement.

How IWE helps