ERCOT – Weekly Market Update
Identify trends and movements affecting electricity in the ERCOT market to help make informed energy decisions.
Milder temps and favorable storage helped limit forward power volatility.
Energy Only Prices
Houston 7x24
North 7x24
Energy Only Prices ($/MWH)
North
Houston
South
West
Heat Rates
Houston HR
North HR
Heat Rates
North
Houston
South
West
Heat Rate Delta as of 08/14/2026
North
Houston
South
West
ERCOT Real Time and Zonal Congestion
ERCOT Real Time & Zonal Congestion: Monthly Averages ($/MWH)
- 12-month min
- Red
- 12-month max
- Green
RT Settlement Point Price (Load Zone)
- 12-month min
- Red
- 12-month max
- Green
ERCOT Intrazonal Congestion
NYMEX Natural Gas
NYMEX Natural Gas Price
NYMEX
NYMEX
$/MMBtu Delta
Additional Market Report Resources
Additional Market Report Resources
- Power prices are determined from forward Heat Rate and natural gas strips for a specific timeframe. Power Price = Heat Rate x Natural Gas Price. Power prices can change based on electricity supply and demand, which is driven by factors such as weather, the economy, available generation and grid conditions.
- Natural Gas prices are a key driver of power prices because natural gas fuels the power plants that are brought online primarily to satisfy peak demand.
- Heat Rates are the common measure of power plant efficiency and are derived from power and natural gas prices: Heat Rate = Power Price ÷ Natural Gas Price. Heat rates are typically higher when gas prices are lower. Heat rates are impacted by weather, regulatory changes, consumer demand and power plant retirements.
Disclaimers
Disclaimers
Content is provided for informational purposes as a service to our customers. While we strive to ensure that the information is accurate at the time of publication, TXU Energy assumes no responsibility for errors or omissions. We believe the information contained herein to be accurate and reliable and buyer or customer understands it has the duty or obligation to validate such information and undertake whatever risk there may be upon its reliance. Historical and current market prices do not predict future price movements or volatility. Nothing in this communication suggests any prediction on the part of TXU Energy or its affiliates or agents.
About Vistra Commercial and Industrial Retail
As a leading commercial and industrial energy supplier across ERCOT, PJM, and MISO markets, Vistra’s trusted retail brands – TXU Energy, Dynegy, and Homefield Energy – power America’s critical industries with tailored energy solutions, deep market expertise, and regional intelligence. Backed by Vistra’s diverse generation portfolio, we help businesses optimize performance, advance sustainability goals, and power what’s next.
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