LZ_NORTH · RT—Latest interval · $/MWh
Waiting for verified observations.
Texas Electricity Market
—Best clean rate1,000 kWh · clean pattern
—Lowest displayed ⓘOfficial selected offers
Lowest displayed rate in this TDU’s selected offers. Compare all three EFL anchors before choosing.
—TDU delivery—
—ERCOT weekly RT ⓘ$/MWh · selected zone
Mean of collected RT intervals for the selected ERCOT zone over the available seven-day window. Wholesale is not a residential offer.
RATE RISK · FROM THE EFL
Is the low rate actually a good deal?
Checking the 500, 1,000 and 2,000 kWh prices…
YOUR DELIVERY AREA
Today’s plan structures
Loading verified offers…
What changed
ENERGY FACTS LABELS
Plan structure, not plan rank.
Cleaner EFL shape Usage-sensitive Each row shows all three official EFL prices. Select a plan to inspect its bill.
FOLLOW THE ARITHMETIC
Offer Integrity Lab
What this calculation means
The net plan-side amount is implied EFL bill minus known TDU delivery. It is not a disclosed energy charge, margin, subsidy, hedge cost or bill credit. Missing mechanics remain UNKNOWN; a negative result is arithmetic only.
Rates apply at the exact EFL anchors. No interpolation between them.
ERCOT / WHOLESALE
The week, hour by hour.
TWO DIFFERENT CLOCKS
How wholesale reaches retail
ERCOT wholesale↓Procurement + hedging↓Retail EFL offers
Wholesale prices are upstream. Retail plans also reflect contracts, delivery charges and plan design; today’s spot price does not set today’s EFL rate.
Evidence and limits
Official ERCOT observations show the wholesale market. Supplier filings document procurement and hedging, but do not disclose exact costs for a selected offer. Weekly retail and wholesale trend comparison appears only as verified snapshots accumulate; a correlation is not a causal estimate.
How to read this chart
Each point is the mean of settlement intervals ending within that hour. High and low use underlying interval prices. Missing hours stay as gaps. RT and DA are separate markets. Zone selection is independent of your retail TDU; no service-address mapping is inferred.
ERCOT official prices ↗CHECK THE RECEIPTS
Evidence, on demand.
Supplier filingsDOCUMENTED · portfolio context+
These filings describe procurement and hedging. Exact plan-level costs and margin remain UNKNOWN.
NRG · 2025 Form 10-K ↗Vistra · 2025 Form 10-K ↗NextEra / Gexa · derivatives disclosure ↗Constellation / Calpine · official publication ↗Retrieved: not recorded for these reference links. Effective dates: see each publication.
Calculation methodsDERIVED · retail-metrics-v1+
EFL bill = kWh × EFL cents ÷ 100. Delivery = kWh × tariff cents ÷ 100 + monthly charge. Net plan-side amount = EFL bill − known delivery.
Tier spread = maximum − minimum of the three EFL rates. Usage-sensitive: spread ≥4.0¢ or explicit usage-credit / minimum-use flags. Clean pattern: spread ≤2.0¢ without those flags. These are disclosure patterns, not a complete assessment of a plan’s value. The metrics describe the selected ten offers, not the entire market.
Lowest displayed identifies an observed advertised number, not the best deal. Missing mechanics stay UNKNOWN. Commission is never an input.
ercot-hour-ending-v1: UTC hour-ending buckets preserve repeated DST hours. Weekly collection averages are weighted by interval count; longer averages require enough complete weeks. No invented history or plan mechanics.
PUCT Rule §25.475 · EFL disclosures ↗Evidence labels & limitsOBSERVED / DERIVED / DOCUMENTED / INFERRED / UNKNOWN+
Observed: directly published official values. Derived: arithmetic. Documented: a filing or rule. Inferred: interpretation, explicitly labeled. Unknown: sources do not establish the value.
Clean patterns do not prove absence of fees. Wholesale does not reveal a REP’s exact procurement cost. Missing values never become zero. Failed refreshes preserve the last validated snapshot.
DATA STATUS
Connecting to official sources…
Official observations. Clear arithmetic.