Wind generation in ISO New England averaged 68 percent higher in the first nine months of 2026 than in the same period of 2025, according to Form EIA-930 data published in the U.S. Energy Information Administration's Hourly Electric Grid Monitor.

Monthly wind output in the region peaked in September 2026 at 668.9 gigawatthours. That figure is more than double the generation recorded in September 2025 and nearly 10 percent above the previous high for 2026, which was set in March.

The EIA attributed the increase to growing capacity additions in the ISO-NE region. Regional wind capacity rose 47 percent so far in 2026 to reach 2.5 gigawatts, following a 12 percent capacity increase during 2025.

On a daily basis, wind generation peaked on October 6, 2026, at approximately 47.3 gigawatthours. That was 1 percent higher than the prior daily record, which occurred on September 10, 2026.

Cumulative wind generation for the first nine months of 2026 reached 4,619 gigawatthours. Total output for that nine-month window already exceeded the full-year 2025 total of 4,533 gigawatthours by 1.9 percent, according to the EIA series.

The figures cover ISO New England, the independent system operator for the six-state New England region. The EIA listed Alex Mey as the principal contributor to the analysis and cited Form EIA-930, the Hourly Electric Grid Monitor, as the underlying dataset.