Texas Tariff Watch · A kWhBill Briefing
Texas Tariff Watch
Filing-level alerts for Texas electricity tariff and regulatory changes — before/after diffs, official sources, archived evidence. In your inbox within 48 hours.
The latest catch
Alert #001 · Sample alert — read free
AEP Texas tariff book — new edition effective September 29, 2026.Captured September 30, 2026, the day after it took effect.
- Rider DCRF (Ninth revision): down 14.4% across every rate class — residential $0.004277 → $0.003660/kWh.
- Rider TCRF (Thirteenth revision): essentially flat (−0.2%) — residential $0.017233 → $0.017194/kWh.
- These are the final rates from PUC Docket 58315, replacing interim rates that were subject to refund.
What you get
The Alert
A filing-level email within 48 hours: what changed, who it hits, source links — docket, tariff PDF, Internet Archive copy.
The Monthly Digest
Every watched docket, one page. If nothing moved, it says so — silence with receipts.
The Archive
Every alert stays public and hash-chained, citable forever.
How it works
Monitor — PUC Texas rate-case dockets (Oncor, AEP Texas, CenterPoint), utility tariff-book revisions, ERCOT large-load interconnection rule changes.
Detect — every filing captured with timestamp and SHA-256 hash, hash-chained.
Diff — before/after on rates, effective dates, docket status flips.
Alert — email within 48 hours; misses and false alarms are owned publicly in the email itself.
What triggers an alert
We alert on
- Utility tariff filings, rate changes, effective-date shifts
- PUC Texas rate-case status flips (filed → approved, remand, withdrawal)
- ERCOT large-load interconnection rule changes
We don't alert on
- General industry news
- Rumors without a citable source
- Changes effective more than 30 days ago
Who it's for
- Data-center site selection. Power cost is a line item in every site memo. A tariff revision rewrites your comparisons.
- C&I energy procurement. Supply contracts price off regulated delivery charges; a missed PUC filing means mispriced advice.
- Energy regulatory practice. Docket deadlines are professional risk; a 48-hour safety net.
Alert archive
New alerts join this list as they ship.
FAQ
- How is this different from RTO Insider or energy newsletters?
- They cover every ISO as news. We cover one state as filings: before/after diffs and evidence archives, not roundups.
- What if nothing changes in a month?
- Then the monthly digest says exactly that, with the docket watchlist status. Silence with receipts.
- Who produces the alerts?
- kWhBill's tariff monitoring pipeline. Every claim links to the docket, the tariff PDF, and an archived copy you can cite.
- Can I cancel?
- Anytime, no lock-in. One email and you're out.
Evidence boundary
Texas Tariff Watch tracks what is filed, not what is rumored. Alerts cite PUC Texas dockets, utility tariff books, and ERCOT publications — each captured with timestamp and cryptographic hash. An information briefing from public sources; not legal advice, not a procurement recommendation. For the statewide residential price benchmark behind these filings, see Texas electricity rates.