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Grid Interconnection, Tariffs and Permits

Most data centers still get their power from the grid, and getting a large new connection has become one of the slowest steps in many projects. A new load of hundreds of megawatts can require transmission studies, network upgrades and new substations, and the queue to study those requests is long in many regions. Utilities and grid operators are writing new rules in response: large-load interconnection processes, tariffs with long minimum contracts, curtailment and flexibility requirements, and in Texas, Senate Bill 6.

The guides in this section explain how those processes work and who pays for what. They cover the interconnection queue, ERCOT and SPP large-load procedures, PJM's capacity market, transmission constraints, physical and virtual power purchase agreements, demand response and the debate over data centers connecting directly to power plants. Because on-site generation brings its own approvals, the section also covers air permits for engines and turbines, EPA rules for stationary engines, water rights and state tax incentives. We try to explain each side fairly, including utilities, ratepayers, regulators and developers.

All 19 grid and policy guides

Why Does Grid Interconnection Take So Long? – The Queue Explained - 3D Wireframe Animation

8 min read · March 11, 2026

Why Does Grid Interconnection Take So Long? – The Queue Explained

How Do Large Loads Affect Grid Reliability? – What NERC Is Watching - 3D Cutaway Animation

7 min read · October 7, 2026

How Do Large Loads Affect Grid Reliability? – What NERC Is Watching

What Is Large Load Interconnection? – How Big Users Get Grid Power - 3D Wireframe Animation

7 min read · September 30, 2026

What Is Large Load Interconnection? – How Big Users Get Grid Power

How Does ERCOT Handle Large Loads? – Studies, Rules and Curtailment - 3D Wireframe Animation

8 min read · September 25, 2026

How Does ERCOT Handle Large Loads? – Studies, Rules and Curtailment

Do Data Centers Raise Electricity Bills? – What the Evidence Shows - 3D Animation

7 min read · October 10, 2026

Do Data Centers Raise Electricity Bills? – What the Evidence Shows

Large Load Tariffs – Why Utilities Want Long Contracts - 3D Wireframe Animation

7 min read · October 9, 2026

Large Load Tariffs – Why Utilities Want Long Contracts

Which States Offer Data Center Tax Incentives? – How They Work - 3D Cutaway Animation

7 min read · August 14, 2026

Which States Offer Data Center Tax Incentives? – How They Work

How Does SPP Handle Large Loads? – Oklahoma's Grid Operator Explained - 3D Cutaway Animation

7 min read · April 26, 2026

How Does SPP Handle Large Loads? – Oklahoma's Grid Operator Explained

What Does Texas Senate Bill 6 Mean for Data Centers? – Key Rules - 3D Wireframe Animation

7 min read · February 10, 2026

What Does Texas Senate Bill 6 Mean for Data Centers? – Key Rules

Can Data Centers Do Demand Response? – Flexible Load Explained - 3D Animation

7 min read · January 16, 2026

Can Data Centers Do Demand Response? – Flexible Load Explained

What Is a Capacity Market? – How PJM Auctions Set Prices - 3D Cutaway Animation

7 min read · October 10, 2026

What Is a Capacity Market? – How PJM Auctions Set Prices

Can Data Centers Connect Directly to Power Plants? – The FERC Fight - 3D Animation

7 min read · March 2, 2026

Can Data Centers Connect Directly to Power Plants? – The FERC Fight

What Is a Power Purchase Agreement? – PPAs for Large Energy Users - 3D Wireframe Animation

7 min read · April 7, 2026

What Is a Power Purchase Agreement? – PPAs for Large Energy Users

Why Can't the Grid Just Add More Power Lines? – Permits, Cost, Time - 3D Wireframe Animation

7 min read · April 10, 2025

Why Can't the Grid Just Add More Power Lines? – Permits, Cost, Time

Do You Need an Air Permit for On-Site Generators? - 3D Cutaway Animation

8 min read · April 26, 2022

Do You Need an Air Permit for On-Site Generators?

Do Data Centers Need Water Rights? – Texas and Oklahoma Basics - 3D Animation

7 min read · May 11, 2020

Do Data Centers Need Water Rights? – Texas and Oklahoma Basics

Physical vs Virtual PPA – How Each One Works - 3D Cutaway Animation

7 min read · May 2, 2022

Physical vs Virtual PPA – How Each One Works

Self-Generation vs Utility Power – Which Costs Less for Large Users? - 3D Cutaway Animation

7 min read · June 11, 2020

Self-Generation vs Utility Power – Which Costs Less for Large Users?

EPA Rules for Stationary Engines – RICE NESHAP and NSPS Explained - 3D Wireframe Animation

7 min read · September 6, 2026

EPA Rules for Stationary Engines – RICE NESHAP and NSPS Explained

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