The pattern, in one sentence
Every year, wholesale electricity prices in ERCOT — the grid that serves about 90% of Texas — climb sharply between June and September, and that pressure works its way into the retail plans you see on Power to Choose.
If you’ve ever shopped for a new plan in July and felt every rate looked worse than what your neighbor signed in February, you weren’t imagining it. The retail market reprices around what the wholesale market is doing, and the wholesale market is built to scream during the hours when 27 million Texans are running air conditioning at the same time.
What actually moves the price
Three things drive the summer climb. They stack:
1. Demand outruns supply for a few hours a day. ERCOT’s all-time peak demand records are now broken almost every August. When demand approaches available generation, the price ERCOT pays generators can rise from $30/MWh in the morning to the system cap — currently $5,000/MWh — by 5 p.m. Retail providers see that cost and price forward contracts accordingly.
2. Scarcity pricing kicks in. When reserves drop below thresholds, ERCOT applies an Operating Reserve Demand Curve adder on top of the energy price. The adder is designed to be punishing — it exists to make new generation profitable to build. Customers on indexed or variable plans feel it directly; customers on fixed plans don’t, but the providers buying that hedged power do, and they price next quarter’s offers around what they had to pay this quarter.
3. 4CP exposure on the commercial side leaks into residential pricing. Large commercial users pay transmission charges based on their consumption during the four monthly grid peaks of June, July, August, and September. Providers hedge this risk, and the cost of hedging shows up across the book.
What you’ll see on retail plans
If you start shopping in April or May, you’ll typically see:
- A widening spread between summer-month consumption and winter-month consumption on the Electricity Facts Label.
- Shorter terms (3 and 6 month) priced higher than 12-month terms — the opposite of what’s intuitive, because providers know summer is coming.
- Variable-rate plans creeping up week over week.
- Fewer teaser promotional rates than you saw in November.
By August, the cheapest tier of fixed plans has often disappeared entirely; the floor moves up two to four cents per kWh.
What to do before June
- Lock a fixed-rate plan in late winter or early spring. February through April is consistently the best window. The market has digested winter, and summer hedging hasn’t fully priced in yet.
- Pick a term that crosses next summer. A 12-month plan signed in March covers you through the worst of the price climb. A 6-month plan signed in March expires right when prices peak.
- Read the EFL, not just the headline rate. Check the price at 500, 1000, and 2000 kWh. Summer bills will land closer to the 2000 kWh column.
- Avoid variable-rate plans entering summer. If you’re on one, switch before May.
What not to bother with
Free-nights plans look attractive in summer marketing campaigns because providers can advertise zero overnight pricing while loading the day rate. Unless your usage profile is genuinely night-heavy — EV charging, shift work, pool pumps on a timer — the day rate eats the savings.
The bottom line
The Texas summer rate climb is a structural feature of the market, not a fluke. The customers who pay the least are the ones who shop counter-cyclically — sign in March, not July, and choose a term length that protects them through the next summer rather than into it.