Bring Your Own Generation (BYOG): Accelerating the path to power supply solutions

To bridge this gap, Bring Your Own Generation (BYOG) is emerging as a powerful solution. BYOG allows data centers to energize – partially or in whole – via onsite or co‑located generation, reducing reliance on the grid. What began as a niche workaround, and previously only utilized by large industrial loads, it has rapidly evolved into a mainstream power supply model for data center developers, that is increasingly embraced by system operators, utilities, and regulators as a way to integrate large, fast‑growing loads without overwhelming the grid and shifting costs onto ratepayers.

What is behind the BYOG momentum?

The surge in interest is being driven by speed‑to‑power needs as data center developers are leveraging onsite generation to energize initial phases more quickly. Some of the key factors accelerating the scale of BYOG adoption include:

• Outsized project scale – AI‑led hyperscale campuses routinely exceed 500 MW, far outpacing historical load requests and utility resource planning.
• Shrinking power supply headroom – Substation and transmission capacity in many regions is fully subscribed.
• Severe interconnection bottlenecks – Traditional study processes that can take 2-4 years cannot keep pace with data center development cycles.
• Policy support – ERCOT’s Proposed CLR pathway in the Batch Study Process, SPP’s HILLGA fast‑track interconnection process, and evolving PJM rules on co-located load and generation increasingly encourage BYOG‑enabled or controllable loads.

A major catalyst strengthening the BYOG value proposition is the rise of interruptible and controllable load strategies. Increasingly, data center developers are designing systems capable of shifting load onto onsite generation during electric grid stress events. In markets like ERCOT and SPP, this flexibility allows data centers to qualify as Controllable Load Resources (CLRs) enabling faster interconnection timelines, lowering peak demand contribution, and making data centers more attractive to utilities that are primarily concerned with electric grid reliability and resiliency.

What are the emerging BYOG models?

As BYOG adoption accelerates, developers and utilities are converging around a handful of core models that balance speed, flexibility, and reliability:

Islanded campuses

The power generator solely serves the data center’s load and is independent from the electric grid. The data center does not have a utility energy service agreement.

Grid served, interruptible load

Electric grid power supply with the data center’s onsite generation acting as a reliability backstop; where that onsite generation is capable of transitioning to self‑supply during times of peak demand. The data center does have a utility energy service agreement.

Co‑located BTM data center

The data center is sited adjacent to a power generator and can only receive power from the generator (i.e., the data center does not have a utility energy service agreement). The generator can sell excess power supply to the grid.

Hypothetical case study: BYOG strategy for a 450 MW AI data center

A hyperscale developer (let’s call it “Project Horizon”) selects a site in the Midwest (MISO power market territory) for a 450 MW next‑generation AI compute campus. Although the region offers strong fiber connectivity and available land, the transmission upgrades needed to support the load are projected to take three to four years, well beyond the project’s commercial window. In addition, the grid power supply needed to serve the data center is projected to take four to six years, further extending timelines.

To meet its original energization schedule, the developer and utility pursue a BYOG strategy that combines onsite generation deployment with interruptible‑load capability, leveraging MISO’s interruptible load interconnection option.

Phase 1: Rapid modular onsite generation deployment

The developer installs 110 MW of mobile natural‑gas generators combined with battery storage, capable of dispatchable operations and load balancing. This enables the first data hall to energize in a year and is a repeatable strategy for the additional halls as the grid transmission upgrades progress.

Phase 2: Interruptible‑load integration

The most significant enhancements come from engineering the data center as a flexible, controllable load (which occurs after electric grid integration). During periods of electric grid stress, Project Horizon can shift 60-80 MW of demand onto its onsite generations, reducing strain on the grid. This capability allows the utility to classify the data center as a Demand Resource or Load Modifying Resource, reducing the amount of transmission upgrades and grid power supply – which enables a faster interconnection for the data center.

Results

Project Horizon achieves first energization two years ahead of the traditional energization timeline. BYOG and interruptible‑load operations materially improve grid reliability and resiliency and reduce ratepayer costs.

What is the road ahead for BYOG?

BYOG is rapidly becoming the go-to approach for integrating large data center loads in constrained grid environments (currently most of the US). The next frontier will be refining interruptible‑load frameworks and retail electric rate tariffs, to determine which BYOG models best protect ratepayers while also enabling data center growth. As utilities increasingly face grid reliability and electric rate pressures, BYOG‑enabled data centers with controllable‑load capabilities are poised to become preferred partners, offering both faster development timelines and tangible grid support services.