If you live in Texas, you already know the weather can change fast. What you might not realize is just how directly those weather swings affect the price you pay for electricity. Texas operates its own power grid through ERCOT, and because that grid is largely isolated from the rest of the country, weather events here have an outsized impact on energy costs.
Summer Heat Waves and the Price Spike
Texas summers regularly push temperatures above 100 degrees, and when that happens, air conditioners across the state run at full blast. This surge in demand strains the grid and forces ERCOT to activate expensive backup power plants. Wholesale electricity prices can jump from their normal range of $20 to $50 per megawatt-hour to several thousand dollars in a matter of hours.
For customers on variable-rate plans, this translates directly to higher bills. Even fixed-rate customers feel the effects over time, because providers factor extreme weather risk into the rates they offer for future contracts. Prolonged heat waves in recent years have pushed summer electricity rates higher across the board.
Winter Storms and Supply Disruptions
While summer heat is the most consistent driver of high prices, winter storms can be even more disruptive. The February 2021 winter storm demonstrated what happens when extreme cold knocks power plants offline while heating demand skyrockets simultaneously. Natural gas supply lines froze, wind turbines iced over, and millions of Texans lost power for days.
Since then, ERCOT has required power generators to weatherize their equipment, but the underlying vulnerability remains. Cold snaps can still reduce available generation capacity just when Texans need the most electricity to heat their homes. This supply-demand mismatch creates the conditions for extreme price volatility.
Hurricanes and Coastal Storms
Texas Gulf Coast hurricanes can damage power lines, substations, and generation facilities, leading to localized outages and supply disruptions. Even when a hurricane does not make a direct hit, the threat alone can cause wholesale prices to rise as grid operators prepare for potential generation losses. Hurricane season, running from June through November, adds another layer of uncertainty to the Texas electricity market.
What You Can Do to Protect Yourself
The good news is that you are not powerless against weather-driven price swings. Here are some steps you can take:
- Lock in a fixed-rate plan before summer or winter arrives. Fixed rates protect you from wholesale price spikes during extreme weather.
- Monitor weather forecasts and pre-cool or pre-heat your home before extreme conditions hit. Running your system hard during off-peak hours costs less than running it during peak demand.
- Invest in insulation and weatherization. A well-sealed home uses less energy to maintain a comfortable temperature, regardless of what is happening outside.
- Have a backup plan. A portable generator or battery backup system can keep essential appliances running during outages triggered by severe weather.
Plan Ahead with WattKarma
Weather will always be unpredictable in Texas, but your electricity plan does not have to be. WattKarma lets you compare fixed-rate plans from multiple providers so you can lock in a competitive rate before the next extreme weather event arrives. The best time to shop for a plan is when the weather is mild and rates are at their lowest.