Texas has 231 GW of battery storage in its interconnection queue. Only 15.8 percent has posted financial security. Here is which counties survive the filter, and which collapse.
Headline queue capacity overstates deliverable supply by roughly six times. Any siting decision, load forecast or acquisition model built on the raw queue number is built on a number the operator never intended to be read that way.
The interconnection agreement is a scheduling document. Financial security plus notice to proceed is the first point where a developer has money at risk and a contractual obligation to build. The gap between those two lines, 59.4 GW signed against 36.6 GW funded, is the width of the industry's optimism.
| # | County | Queued vs funded | Queued GW | Funded GW | Real | Proj (funded) | Rank move |
|---|---|---|---|---|---|---|---|
| 1 | Brazoria | 7.4 | 2.4 | 33% | 45 (11) | holds | |
| 2 | Harris | 6.3 | 0.5 | 8% | 28 (4) | ↓7 | |
| 3 | Mitchell | 6.1 | 0.0 | 0% | 12 (0) | ↓12 | |
| 4 | Bexar | 5.0 | 0.5 | 11% | 20 (4) | ↓4 | |
| 5 | Jack | 4.9 | 0.8 | 16% | 13 (3) | ↓1 | |
| 6 | Ellis | 4.4 | 0.2 | 5% | 17 (1) | ↓7 | |
| 7 | Wise | 4.0 | 0.0 | 0% | 10 (0) | ↓9 | |
| 8 | Robertson | 3.9 | 0.6 | 16% | 20 (3) | holds | |
| 9 | Wharton | 3.8 | 1.0 | 25% | 23 (5) | holds | |
| 10 | Milam | 3.8 | 0.4 | 11% | 18 (3) | ↓1 | |
| 11 | San Patricio | 3.7 | 0.5 | 13% | 19 (3) | holds | |
| 12 | Cameron | 3.5 | 0.9 | 24% | 23 (7) | holds | |
| 13 | Reeves | 3.4 | 0.2 | 7% | 9 (1) | holds | |
| 14 | Scurry | 3.4 | 0.0 | 0% | 13 (1) | holds | |
| 15 | Matagorda | 3.2 | 1.3 | 41% | 19 (7) | holds | |
| 16 | Borden | 3.2 | 1.0 | 31% | 11 (2) | holds |
Mitchell County ranks third in Texas by queued capacity at 6.1 GW and has zero funded projects. Wise County ranks seventh at 4.0 GW, also zero. A site selection screen run on headline queue data puts both in the national top ten. Neither has a single megawatt with money behind it.
The largest single cohort in the queue claims a 2028 commercial operation date: 88.3 GW across 462 projects. Twelve and a half of those gigawatts are funded. A load that needs firm power in 2028 is planning against a cohort that is 86 percent unfunded today, and interconnection studies alone will consume much of the intervening time.
The 2029 cohort is 3 percent funded. It should be treated as an expression of interest, not a supply forecast.
Generation and storage interconnection is a public filing. Large load interconnection is not, in any comparable form. ERCOT created a separate process for loads of 75 MW and above, Batch Zero under PGRR145, and publishes the forms and eligibility rules rather than a roster of who is in it.
That asymmetry is the central problem for anyone siting a large load in Texas. You can see, in detail, every megawatt of supply that intends to arrive and exactly how much of it is real. You cannot see, from public filings, who else is queued for the same substation capacity. Estimating the demand side requires triangulation from utility filings, county tax abatement records, water district permits and transmission service provider planning documents.