GCWA / Texas City refinery cogeneration complex (former Amoco Oil, Texas City, Galveston County, TX)

GCWA / Texas City refinery cogeneration complex (former Amoco Oil, Texas City, Galveston County, TX) is the ERCOT market pricing point associated with GCWA, a 7.2 MW petroleum facility in Galveston County. It is a pricing location, not the physical plant itself; its locational marginal price represents the marginal value of electricity at this point on the grid.

Current real-time LMP: $22.02/MWh; Latest · Oct 22, 4:00 AM CDT
Typical price: $39/MWh average; $32/MWh median · trailing 365 days
Grid location: Coast zone; Market pricing location
Mapped facility: GCWA; 7.2 MW petroleum · ERCOT crosswalk

GCWA / Texas City refinery cogeneration complex (former Amoco Oil, Texas City, Galveston County, TX) · ERCOT · Ask the Grid

Asset facts

Market identity, price telemetry, and nearby grid context.

Settlement point: Settlement point
ERCOT settlement point AMO_AMOCO_1.
Grid location: Coast zone
Map coordinate 29.3801, -94.9534.
Mapped power plant: GCWA
ERCOT resource crosswalk · 7.2 MW · petroleum
Price record: 500,240 price intervals · avg $39/MWh · 365 day window
Real-time LMP, day-ahead price, hourly shape, and fleet-relative statistics.

Why this location matters

The trailing median price is $32/MWh and the mean is $39/MWh, but the tail is much sharper: 11 five-minute intervals exceeded $1,000/MWh over the last 365 days, and 0.6% of intervals settled below zero.

ERCOT’s resource crosswalk ties this pricing point to GCWA, a 7.2 MW petroleum facility. That relationship identifies the plant’s associated market location; the settlement point is still a price record, not the physical plant itself.

Physical and grid context

Assets and settlement points nearest this location in ERCOT's Coast zone.

Mapped power plants

GCWA7.2 MW · petroleum · Galveston County · medium confidence in the ERCOT resource-to-plant match0.0 mi Texas City Power Plant450 MW · natural gas · Galveston County · medium confidence in the ERCOT resource-to-plant match0.6 mi

Plant relationships use the ERCOT resource crosswalk. Geographic proximity is listed separately below.

Nearby power plants

Texas City Plant Union Carbide25.8 MW · other · Galveston County0.5 mi

Price behavior

Real-time price history, price shape, and fleet-relative statistics.

Latest real-time LMP

$22.02$/MWh

Oct 22, 4:00 AM CDT

ERCOT day-ahead prices are market settlements, not model predictions. Day-ahead spread statistics compare completed delivery hours with hourly real-time LMP averages.

Settlement pointlow volatility

Zone: Coast
Location: 29.380, -94.953
Settlement point: AMO_AMOCO_1

Price statistics

500,240 intervals

Avg $/MWh

$39

Median

$32

99th pct

$148

Max spike

$1,367

Spikes > $1000

% negative

0.6%

Average price$39/MWh

$0$42+

Average price ranks at the 78th percentile among 1,089 market nodes.

Volatility$31/MWh

$0$103+

Volatility ranks at the 21st percentile among 1,089 market nodes.

Negative-price hours0.6%

0.0%9.5%+

Negative-price hours ranks at the 7th percentile among 1,089 market nodes.

Average price by hourlocal time · trailing 90 days

0:006:0012:0018:0024:00

Recent pricehourly average · last 14 days

Data and methodology

Source: ERCOT real-time and day-ahead LMP settlements and the ERCOT resource crosswalk. Price statistics use the trailing 365 days; hourly shape uses 90 days; recent history uses 14 days. Market timestamps are shown in ERCOT local time.