Texas · public data
Where the price is, and what a megawatt costs.
Two readings of the same public files. Data center sites uses the ERCOT large-load queue, which is not a data-center census. Home battery ranks census tracts and ZCTAs, never a parcel. Independent. Not affiliated with Base Power.
Loading the public snapshot.
Base service territory and Base retail pricing are not in this snapshot. No county is marked as a Base county. 39.2 kWh is the Base Core nameplate cited from pv magazine, 4 Aug 2026. Using that nameplate as usable kWh is an EXAMPLE.
The formula
profit = (node or zone price spread, $/MWh / 1000) x cycles/yr x usable kWh x round-trip efficiency - degradation, $/yr
The spread is the mean of daily (evening price minus late-morning price): hours ending 20 and 21, minus hours ending 11 through 14. A negative day stays in the average. A home settles at its load zone. The resource-node figure is a one-month day-ahead median at substations that matched a county, and it is a proxy.
Ranked areas
The list starts on the load-zone real-time series because a home settles at its load zone. Areas with no owner-occupied one-unit homes are left out.
Counties
A county is colored only when at least three substation names matched and 75 percent shared a zone. Click a county to filter the table. Gray means unassigned, not a zero price.
What is not in the home ranking
- No owner name, street, or parcel. Homes are Census ACS 2024 5-year table B25032: owner-occupied one-unit detached plus one-unit attached.
- County appraisal rolls were not downloaded, because the bulk files carry owner names and addresses.
- Most counties have no substation name match, so they are not given a zone. Harris, Dallas, and Bexar are in that group in this snapshot.
- Real-time prices at resource nodes were not downloaded.