power-forecasting analytics
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Amperon · United States · US renewable curtailment shatters records in 2026 as transmission fails to keep up
Documents four of seven US ISOs setting curtailment records in 2024, with 2025 breaking them again and 2026 accelerating, pinning the cause on transmission congestion, not generation excess.
“In 2024, four of the seven US ISOs set annual records for curtailed renewable energy, and the trend is accelerating.”