Final NERC/WECC Charge Rate for Assessment Year 2026

The California ISO has calculated the Final Rate for the North American Electric Reliability Corporation/Western Electricity Coordinating Council (NERC/WECC) charges for the assessment year 2026.

The final NERC/WECC charge rate for assessment year 2026 is provided below for scheduling coordinators’ information pursuant to Section 11.20.4 of ISO Tariff.

Item	Value	Unit
Total NERC/WECC Charge for Assessment Year 2026	14,444,443.03	$
Total NERC/WECC Metered Demand for Calendar Year 2024	210,313,928.16	MWh
Final NERC/WECC Charge Rate for Assessment Year 2026	0.068680392	$/MWh

The ISO will issue Final NERC/WECC charge invoices no later than Nov. 18, 2025.

Contact information

Please contact ISO Customer Service at 916-608-7320 with any questions.