Where does Texas electricity come from?
Most of it comes from natural gas, wind, and solar. In 2025, those three made up about 79% of the power generated on the main Texas grid.
The 2025 fuel mix
These are shares of generation on the ERCOT grid in 2025:
| Source | Share of 2025 generation |
|---|---|
| Natural gas | 41.1% |
| Wind | 23.6% |
| Solar | 13.9% |
| Coal | 12.9% |
| Nuclear | 8.6% |
Wind and solar together were 37.5%, or more than a third. For the chart that shows how that share has grown since 2007, see our renewable page.
What ERCOT covers
ERCOT runs the grid for most of Texas. The Independent Market Monitor says it serves more than 27 million customers, about 90% of the state's electric demand. Parts of Texas are outside it. These numbers describe ERCOT, not the whole state.
What each source does
Natural gas is the largest source. The Market Monitor says natural gas is the most widely used fuel in ERCOT and a main influence on wholesale energy prices. It reports that in 2025 the average daily gas price rose 61% while the all-in wholesale price of electricity rose less than 14%, because there was a surplus of supply.
Wind was the second-largest source, at 23.6% in 2025.
Solar grew the fastest. Its share rose from 10.4% in 2024 to 13.9% in 2025, and solar generation grew 49% over the year, according to the Market Monitor.
Coal supplied 12.9% in 2025.
Nuclear supplied 8.6% in 2025.
Batteries are not a fuel source. They store power and send it back to the grid. The Market Monitor notes they play a major role in serving load as solar output falls in the evening. More than 17,000 MW of battery capacity was installed by the end of 2025, according to the Market Monitor.
Why this matters for your plan
The fuel mix is the grid as a whole. It is not the mix behind your own plan. Every home on the ERCOT grid receives the same blended power, whatever plan it is on.
What a plan can change is the accounting. A renewable plan retires certificates (RECs) to match your usage with wind or solar generation. The Electricity Facts Label shows the plan's renewable percentage and the statewide average. Our guide on whether a 100% renewable plan is really renewable explains how that works.
Your price depends on more than the fuel mix: the plan's rate, your utility's delivery charges, and your usage.
Frequently asked questions
Q: What is the biggest source of electricity in Texas?
A: Natural gas. It supplied 41.1% of generation on the ERCOT grid in 2025.
Q: How much of Texas electricity is wind and solar?
A: Wind was 23.6% and solar 13.9% in 2025. Together that is 37.5%, more than a third.
Q: Does this cover all of Texas?
A: No. It covers the ERCOT grid, which serves about 90% of the state's electric demand.
Q: Is the power at my house from the source on my plan?
A: No. Electricity mixes on the grid. A renewable plan matches your usage with certificates.
Q: Is solar growing in Texas?
A: Yes. Solar's share of ERCOT generation rose from 10.4% in 2024 to 13.9% in 2025.
Q: Where can I see the long-term trend?
A: Our renewable page has a chart of the ERCOT wind and solar share from 2007 to 2025.
Enter your ZIP to see plans at your usage on the next page.
— No email, no phone, no sales calls.
Sources