Grid and interconnection rules
PUCT-approved ERCOT rules establish modeling and interconnection requirements for large loads, including visibility standards beginning at 25 MW. The newer Batch Zero process studies qualified projects of 75 MW or more together and is now moving through applicant classification and transmission planning.
Current position
ERCOT interconnection rules plus Batch Zero study process
- Actions
- 1
- Published tariffs
- 0
- Legislation
- 1
- Status
- Adopted
Regulatory and utility record
Tariffs, contracts, and proceedings
Each record is shown on its own terms. A utility-specific tariff or contract does not automatically apply to every large customer in the state.
Statewide action · Rules effective; implementation ongoing
ERCOT large-load interconnection rules and Batch Zero
Texas is using grid-modeling, interconnection, and transmission-study rules rather than one statewide retail large-load tariff. Retail contract protections therefore cannot be inferred from the ERCOT framework.
Why it matters
Texas is primarily a grid-access and transmission-planning story rather than a single retail tariff proceeding, so ERCOT implementation is the key tracker.
Enforceable terms
Key requirements
Eligibility threshold
25 MW visibility · 75 MW Batch Zero
Minimum payment
Not a retail-rate provision
Minimum contract term
Not a retail-contract provision
- Service structure
- ERCOT interconnection and operations rules, not a retail tariffEffectiveRetail contract, collateral, and minimum-payment terms remain utility- or customer-specific.
- Charges and assessments
- Transmission and interconnection upgrades identified through studyProject specificBatch Zero and related studies identify system work, but the ERCOT protocol does not establish one statewide retail take-or-pay charge.
- Credit and collateral
- Not established by the ERCOT rulesNot applicable
- Exit protection
- Not established by the ERCOT rulesNot applicable
- Grid infrastructure
- Batch study identifies transmission needsImplementation pendingBatch Zero evaluates system capacity and required transmission; it is not itself a statewide retail cost-recovery guarantee.
- Generation and resource costs
- Not established by the ERCOT grid rulesNot applicable
- Capacity protection
- Controllability, telemetry, and operational coordinationEffectiveCovered loads must satisfy ERCOT modeling and operational requirements so the grid operator can plan and respond reliably.
- Reporting and true-up
- 25 MW visibility and study data requirementsEffectiveLarge loads provide forecasts, models, and status updates; higher-impact projects enter the applicable study process.
Official sources supporting these requirements
Statutory record
Legislation
SB 6
89th Regular Session
Large-load interconnection, operation, and cost rules
Requires Public Utility Commission and ERCOT standards for large-load interconnection, stranded-cost protection, reliability, colocated generation, demand management, and review of transmission-cost allocation.
Effective June 20, 2025.
“Not specified” means the current official tariff record does not establish a normalized term. Retail tariff requirements are not inferred from wholesale-grid rules, interconnection processes, or pending policy proceedings.