What Is ERCOT? Understanding the Texas Electric Grid

ERCOT stands for the Electric Reliability Council of Texas. It is the independent system operator that manages the flow of electric power to roughly 90% of Texas, serving more than 26 million customers across the state.

Unlike most of the United States, the ERCOT grid operates as an island. It is intentionally isolated from the Eastern Interconnection and the Western Interconnection, the two major national grids. This isolation means Texas has very limited ability to import or export electricity across state lines, which gives Texas unique control over its own energy supply.

This independent structure was a key factor enabling Texas to deregulate its electricity market. Because ERCOT operates entirely within Texas borders, it avoids federal jurisdiction under the Federal Energy Regulatory Commission (FERC), allowing the state legislature to open the retail electricity market to competition. Today, ERCOT oversees more than 680 generation units and manages a competitive marketplace where retail electric providers (REPs) compete for your business.

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