Data Centers & Large Load
April 9, 2026
7 min read
# Texas Data Center Tax Scrutiny: What Commercial Electricity Buyers Face
Texas lawmakers are scrutinizing $1.6 billion in annual data center tax breaks. Here's what commercial electricity buyers need to know about potential rate impacts and how to protect your contracts.
## The News
Texas lawmakers have put the state's $1.6 billion annual data center sales tax exemption program under a microscope, and commercial electricity buyers who don't operate data centers should be paying close attention. Lt. Gov. Dan Patrick's April 3 interim charges direct two Senate committees to scrutinize both the cost of these tax breaks and the implementation of SB 6's large load interconnection rules.
The critical question for commercial buyers is straightforward: if those subsidies get restructured or eliminated, who absorbs the infrastructure costs tied to 410 GW of pending ERCOT load interconnection requests? That's nearly five times ERCOT's current 85 GW peak demand. The cost allocation decisions made in the next 12 months will show up on your electricity bill.
## What Happened
On April 3, 2026, Lt. Gov. Dan Patrick issued interim charges assigning pre-session homework to Senate committees ahead of the 90th Texas Legislature, which convenes in January 2027.
The Senate Business and Commerce Committee was tasked with studying SB 6 implementation, including ERCOT's Large Load Batch Study Process for interconnection requests exceeding 75 MW. SB 6 currently requires these large loads to complete pre-interconnection studies, submit demand profiles, make financial commitments, and receive PUC approval before connecting to the grid.
The Senate Finance Committee, chaired by Sen. Joan Huffman, was directed to scrutinize data center sales tax exemptions that have grown from $14.6 million in the 2014-15 biennium to a projected $3.3 billion in 2028-29. Huffman called the $1.6 billion annual cost "unsustainable." A Senate Finance hearing is scheduled for July 2026.
On April 9, the House State Affairs Committee held a separate hearing on data center competitiveness, security, and the ERCOT batch study process. The timeline runs through late 2026 interim studies, with legislative action expected in the January 2027 session.
## Impact on Texas Data Center Electricity Costs for Commercial Buyers
Commercial electricity buyers who don't operate data centers face two potential cost vectors from this legislative activity, and neither requires direct action by lawmakers to materialize.
### Transmission Cost Reallocation
ERCOT's grid requires significant infrastructure upgrades to accommodate data center load growth. With 410 GW of load interconnection requests pending (90% from data centers) against 85 GW of current peak demand, the transmission upgrades needed to serve even a fraction of these requests get cost-allocated across all ratepayers through TDU delivery charges and ERCOT fees. If your contract includes pass-through provisions for transmission costs, your rates increase when infrastructure spending increases.
### Tax Break Restructuring Spillover
If lawmakers restructure or eliminate the $1.6 billion in annual sales tax exemptions, data center operators face higher operating costs. Some may slow expansion or negotiate different grid interconnection terms, potentially delaying new generation capacity that the grid needs. Others may pass costs through the supply chain, affecting wholesale market dynamics that set commercial electricity prices.
### Contract Type Determines Your Exposure
Fixed-rate contracts lock in today's transmission rates for the contract term. Index and pass-through contracts expose you to future infrastructure cost increases in real time. Multi-site buyers in high-growth load zones (Permian Basin, DFW/Oncor territory, Houston/CenterPoint) face compounding risk from both transmission upgrades and local congestion.
### The Commercial Buyer's Data Center Grid Cost Exposure Checklist
Use these five questions to assess your facility's exposure to data center-driven cost increases:
Contract structure: Does your current contract fix or pass through ERCOT transmission and TDU delivery costs?
Load zone proximity: Is your facility in a TDU territory with significant pending data center interconnection requests (Oncor, CenterPoint)?
Renewal timeline: Is your contract renewing within 12 months, before or after the July 2026 Senate Finance hearing?
Demand profile: Does your facility exceed 1 MW peak demand, qualifying for demand response programs that offset rate increases?
Multi-site exposure: Do you operate across multiple TDU territories, requiring territory-specific cost analysis?
If you answered "pass-through," "yes," or "before" to three or more of these questions, your near-term rate risk from data center grid growth is elevated.
## What You Should Do
Review your transmission charge structure. Pull your last three electricity bills and identify whether ERCOT transmission and TDU delivery costs are fixed or passed through. If you can't tell, ask your REP for a written breakdown.
Get competitive quotes now. If your contract renews within 12 months, start collecting broker quotes before the July 2026 Senate Finance hearing introduces uncertainty into forward pricing. Rate comparison data shows current pricing benchmarks for your TDU territory.
Map your load zone exposure. For multi-site buyers, identify which facilities are in TDU territories with the highest pending data center interconnection requests. Oncor and CenterPoint territories have the most activity.
Negotiate pass-through caps. When renewing, request contractual caps on transmission and delivery cost pass-throughs. Even a percentage ceiling provides budget predictability.
Explore demand response enrollment. Facilities using more than 1 MW can qualify for ERCOT demand response programs that generate credits during peak periods, partially offsetting future transmission cost increases.
Lock in multi-year fixed rates. If your exposure checklist score is 3 or higher, consider locking a 24 to 36-month fixed-rate contract before 2027 session outcomes are known. The current rate environment provides a benchmark for evaluating offers.
Monitor the July 2026 hearing. The Senate Finance Committee hearing is the next major trigger for this issue. Outcomes will signal whether tax break restructuring, new transmission cost allocation rules, or both are likely in the 2027 session.
## Questions to Ask Your REP or Broker
Before your next contract negotiation, ask these five questions:
"How does our current contract handle ERCOT transmission and distribution cost pass-through? Show me the specific clause."
"If Texas increases infrastructure spending for large load interconnections, which charge components on our bill would increase, and by how much?"
"Are you seeing rate changes in our load zone in anticipation of nearby data center interconnections?"
"What's the earliest we can lock in a new fixed rate if our contract allows early renewal?"
"Do you have exposure data for our specific TDU territory on pending large load interconnection requests?"
Any REP or broker who can't answer these questions with specifics may not have the market intelligence you need for this procurement cycle.
## Frequently Asked Questions
### Will Texas data center growth raise my commercial electricity bill?
Potentially. The mechanism is indirect: data center load growth requires transmission infrastructure upgrades, and those costs are allocated across all ratepayers through TDU delivery charges. Industry analysis projects wholesale rate increases of 22% or more statewide by 2030, with North Texas facing up to 79% increases by 2027. Whether those increases reach your bill depends on your contract structure (fixed vs. pass-through).
### What is SB 6 and how does it affect commercial electricity buyers?
SB 6 is Texas legislation requiring loads exceeding 75 MW to complete pre-interconnection studies, submit demand profiles, and make financial commitments before connecting to the ERCOT grid. For regular commercial buyers, SB 6 matters because it controls how quickly new large loads connect, which affects the pace of transmission infrastructure spending and the resulting cost allocation to all customers.
### What are ERCOT transmission charges and why might they increase?
ERCOT transmission charges cover the cost of moving electricity across the grid from generators to your facility. These charges are set by your TDU (Oncor, CenterPoint, AEP, or TNMP) and approved by the PUCT. They increase when new transmission infrastructure is built. With 410 GW of load interconnection requests pending (mostly data centers), significant new transmission investment is expected, which gets allocated across all customers in each TDU territory.
### Should I lock in a fixed rate now because of data center grid growth?
It depends on your contract renewal timeline and risk tolerance. If you're renewing before the July 2026 Senate Finance hearing or before the 2027 legislative session, locking a fixed rate removes uncertainty about future transmission cost increases. If your current contract extends past 2027, you have time to monitor developments. Review the exposure checklist in this article to assess your specific situation.
Originally published at texascommercialplans.com
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