What to expect on your September bill
The mild summer of 2025 continued into August, with above-average rainfall and temperatures similar to July.
North Texas received almost 5 inches of rain in August, 2.71 inches more than normal. That includes a deluge that dumped more than 3 inches on the final two days of the month.
Like July, August had three 100-degree days, largely thanks to frequent rain cooling things down. Altogether, July and August had only six days with 100-degree temperatures. If no more 100-degree days occur this year, it will mark the fewest such days in a North Texas summer since 2007.
CoServ Members should expect August energy use to be about the same as July. If you compare August 2025 with the same period in 2024, CoServ Members should expect energy usage to be less this year.
The average temperature was 3.4 degrees cooler this August compared to last year, while the average high temperature was 5.2 degrees cooler. Overall, the CDD was 100 points lower this August compared to last August.
The average temperature for August was 85.5 degrees, the exact same as the average temperature for July. That’s reflected in the Cooling Degree Days, as shown in the chart below.
| July | August | Difference | |
|---|---|---|---|
| Average temperature | 85.5 | 85.5 | 0 |
| Heating Degree Days | 0 | 0 | 0 |
| Cooling Degree Days | 646 | 643 | 3 less CDD |
| Utilities and the federal government measure the impact of weather on energy usage by calculating Cooling Degree Days (CDD) and Heating Degree Days (HDD). To calculate the CDD, take the average temperature for a day and subtract it from 65. The higher the number, the more air conditioning will be needed to keep your home comfortable. Click here for more information on calculating CDD. | |||
RATES
While CoServ can’t do anything about the weather, we do work hard to keep electric rates low to minimize the impact of a Texas summer on our Members.
CoServ has 100% control over our power purchases, so when we save money on wholesale electricity, we pass that on to Members, as we did this month.
CoServ accounts for fluctuations in wholesale electricity costs by adjusting the Power Cost Recovery Factor (PCRF) up or down.
CoServ kept the PCRF at -0.01 per kilowatt-hour for September billing. That means it subtracts one penny off the base rate. This marks the 15th straight month where the PCRF is negative.
The Standard residential rate for September will be 12.23 cents per kWh.
In 2024, CoServ Members paid an average of $44 less per month, a savings of $500 for the year, compared to the retail electric providers (REPs) in the deregulated areas of Texas. That’s based on average 12-month REP contracts and compared to CoServ’s standard residential rate for the same time period based on 2,000 kWh per month.
Click here to learn more about how your CoServ rate is calculated.
