Interconnected grid for energy security
If there is a variance, the power system’s frequency is affected, resulting in grid failure. On February 14 and 15, 2021, a series of events forced ERCOT to curtail power. The demand for electricity due to the very large-scale weather events (VLSWEs) had risen to 68 gigawatts. Households began using energy-inefficient heating systems installed in most Texas homes to fend off the extreme cold.
