Published on November 3, 2026
Gray Oak Power’s new guide, The Developer’s Guide to Firm Power, gives data center developers a working map of behind-the-meter generation: why it has become the fastest route to energization, how the rules are shifting in Texas and at the federal level, and what to require from the partner who builds and runs the plant.
The case starts with the queue. Utility interconnection can take seven to ten years; dedicated generation built inside the fence can energize a site in two to four. The market has already moved. More than one-third of all U.S. gas power capacity in development is now dedicated to on-site data center generation, up from 5% at the end of 2024, according to Global Energy Monitor.
Stepping off the grid also makes the developer responsible for a power plant: fuel, permits, equipment and decades of operation. The guide is written for the teams weighing that trade.
Download The Developer’s Guide to Firm Power
What’s Inside the Guide
The guide moves from market demand to regulation to execution:
Why firm power is now a requirement: Lawrence Berkeley National Laboratory projects U.S. data center electricity demand will more than double by 2030, and rack densities are approaching 1 MW. Wind and solar alone cannot carry that base load at five nines (99.999%) reliability.
The regulatory landscape: Texas Senate Bill 6, ERCOT’s Batch Zero framework and the Federal Energy Regulatory Commission’s (FERC) June 2026 show cause orders on large loads and co-located generation.
How to evaluate an energy partner: What separates an owner-operator from an equipment vendor, from creditworthiness and supply chain access to long-term operations and maintenance.
Faster Power Comes With a Plant to Run
On-site generation removes the wait for utility service and replaces it with a new set of obligations: fuel supply contracts, air permits, turbine procurement, grid-parallel switchgear and an operating commitment that runs for decades. In Texas, Senate Bill 6 requires loads of 75 MW or more to register backup generation. At the federal level, FERC’s show cause orders require all six RTOs and ISOs under its jurisdiction to justify or reform their large load rules, and those filings are still arriving.
What a Customized Behind-the-Meter Approach Requires:
Written From the Operator’s Side of the Fence
Gray Oak Power brings 9.8 GW of power generation experience and 36+ power projects delivered, and our leadership team holds more than 100 years of combined experience owning and operating energy assets. That record informs the paper’s central argument: the power plant is now part of the data center, and the developers who move fastest bring in a partner that has already built and operated generation at this scale. Explore Gray Oak Power’s capabilities.
Behind-the-Meter Data Center Power FAQ
What is behind-the-meter power for data centers? Behind-the-meter power is generation built on the data center site and connected on the customer’s side of the utility meter, so the facility draws its primary supply without waiting for grid service. For hyperscale campuses, that typically means natural gas generation paired with battery storage. The guide covers what it takes to build and run it.
How long does grid interconnection take for a data center? In many markets, utility interconnection now takes seven to 10 years. Dedicated on-site generation can energize a site in two to four years. The guide explains why developers are moving generation inside the fence.
What is ERCOT’s Withdrawal-Limited Private Use Network? The Withdrawal-Limited Private Use Network (WLPUN) is one of two optional pathways in ERCOT’s Batch Zero process, which began in July 2026. It lets large loads that build on-site generation offset the transmission capacity they need and connect sooner. The guide explains both pathways alongside the Texas rules that shape them.
Get the full guide: Download The Developer’s Guide to Firm Power
