NERC and WECC warned that inverter-based resource performance remains an ongoing issue in the Western Interconnection.

NERC's 2021-2022 Winter Reliability Assessment warns that the bulk power system faces multiple threats, including severe weather and fuel shortages.

NERC called for developing metrics on resilience and urged continued efforts to respond to increased cyber threats and growth in asynchronous generation.

Most regions will meet their summer peaks but Texas and California are at risk, NERC said in its 2019 Summer Reliability Assessment.

NERC offered a mostly upbeat report on the long-term health of the nation’s grid, celebrating results from its first interconnection-wide frequency response studies.

NERC warned that faster than expected coal and nuclear plant retirements could jeopardize reliability if grid operators are not prepared.

The bulk power system showed improved ability to rebound from severe storms last year while continuing to improve on most other reliability metrics, NERC said.