Congress mandates data centers pay grid costs—but complexity may slow AI infrastructure
S. 4559 — Energy Cost Fairness and Reliability Act of 2026 · Filed by Adam Schiff (D-CA) · Introduced May 18, 2026 · Referred to committee
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What it does
This bill creates a new federal regulatory framework for large data centers and AI computing facilities (defined as facilities using over 50 megawatts of power) seeking to connect to the electrical grid. It requires data centers to pay 100% of interconnection study costs and network upgrade costs, demonstrate demand flexibility and curtailability (ability to reduce power use on demand), and either build their own power generation or arrange for it. The bill also directs the Department of Energy to collect data on data center energy use, establish an AI testbed at a national laboratory, and requires the Federal Energy Regulatory Commission to issue new rules within one year to manage these large load interconnection requests.
Why we flagged it
The bill's core function is to establish a new regulatory regime for large load facilities (primarily data centers) interconnecting to the grid, with emphasis on cost allocation, demand flexibility requirements, and interconnection queue management. It is not primarily about energy cost fairness for consumers, despite the title.
What the text implies
- The requirement that large load customers pay 100% of network upgrade costs and demonstrate new generation supply may create a two-tier grid system where data centers are incentivized to build private microgrids, potentially fragmenting the integrated grid and reducing economies of scale for all consumers.
- The demand flexibility and curtailability requirements, while framed as grid-stabilizing, may allow transmission providers to interrupt data center operations during peak demand periods, creating operational risk for AI companies and potentially shifting reliability burden to their backup systems rather than grid infrastructure investment.
The full analysis lists 4 implications of this text.
Who stands to gain
large data center operators (Amazon, Google, Microsoft, Meta); AI computing companies; transmission providers and regional transmission organizations