Historical Power Pricing

Strong Pricing — Zone avg $31/MWh | bus data unavailable | fallback used
Criteria: Trailing 24-month real-time LMP at the inherited POI substation bus (lower is better). Thresholds: <$35 Strong, $35–$50 Favorable, $50–$65 Moderate, ≥$65 Materially Congested.
Geoforge curated dataset · 2026-07-15
Site Assessment
✓ Strong Pricing
Zone avg $31.35/MWh · ERCOT LZ_HOUSTON
Inherited POI Substation
CANEY 138 kV
3.73 mi · BAY CITY, MATAGORDA County
Zonal Mean LMP (24-mo)
$31.35/MWh
P10: $22.84 · P90: $38.86
Negative Price Frequency
1.3% Low
Of 70,080 settlement intervals
Bus-Level Data
Unavailable
Zonal fallback used · local congestion risk unquantified
Date Range
2024-08 to 2026-07
ERCOT RTM Settlement Point Prices

Monthly Average RTM LMP — LZ_HOUSTON ($/MWh)

Monthly Negative Price Frequency (%)

Summary

ERCOT LZ_HOUSTON — Trailing 24-Month RTM LMP Analysis

The site resolves to ERCOT load zone LZ_HOUSTON via inherited POI substation CANEY (138 kV, 3.73 mi). Trailing 24-month average RTM LMP is $31.35/MWh (P10 $22.84, P90 $38.86), placing the site in Strong Pricing. Bus-level node pricing is unavailable for this POI; zonal pricing may understate local congestion costs at this 138 kV interconnection point. Negative-price intervals represent 1.3% of settlement periods.

The zonal mean LMP of $31.35/MWh is below the $35/MWh threshold (lower is better), placing the site in the Strong Pricing tier. Bus-level settlement point pricing is unavailable for this POI because the current substation layer does not carry ERCOT settlement-point IDs. The bus data gap is noted as a caveat: zonal pricing may understate local congestion costs at 138 kV POIs where transmission constraints degrade bus-level prices.

Bus-level pricing unavailable. Zonal LMP may understate local congestion costs at 138 kV POIs. Curtailment share flag not available in current data layer.

Pricing Assessment Summary

Check Value Result
Primary Ladder $31.35/MWh < $35 Strong Pricing
Congestion-Out Flag Bus data unavailable N/A
Negative Basis 1.3% ≤ 10% No concern
Curtailment Share Not available No data
Bus Data Gap No bus-level pricing Caveat noted
Volatility Flag P10=$22.84, P90=$38.86 Not triggered
Final Rating Strong Pricing

Zonal Statistics (24-month trailing)

Metric Value
Settlement PointLZ_HOUSTON
ISO/RTOERCOT
Zonal Mean RTM LMP$31.35/MWh
P10 LMP$22.84/MWh
P90 LMP$38.86/MWh
Negative Price Frequency1.3%
Curtailment Sharenot available in layer
Total Intervals70,080
Data Window2024-08 to 2026-07

Next Steps

Sources