On June 18, 2026, the Federal Energy Regulatory Commission issued tailored show-cause orders involving PJM, MISO, Southwest Power Pool, California ISO, ISO New England, and New York ISO. The action targets the rules those regions use to connect data centers and other very large electric loads.
The two deadlines
- Each affected region must submit a generation-adequacy informational report within 30 days.
- Each must answer FERC’s tariff concerns on a 60-day schedule, either explaining why its current rules remain just and reasonable or proposing changes.
These are show-cause orders and information requirements. They are not final national tariff rules, and they do not by themselves approve a project, generation resource, or interconnection request. The material policy changes will appear in the regional filings and later Commission orders.
Why it matters
Large-load projects can move from proposal to construction faster than generation and transmission infrastructure. The six proceedings put generation adequacy, study rules, cost allocation, queue management, and service obligations into separate regional records under a common federal timetable.
What to watch
The 30-day informational reports and 60-day tariff responses should be reviewed region by region. Later orders may differ across markets, so Server Country will not describe a single nationwide rule until FERC actually adopts one.