US manufacturing production increased in September but experienced a steep slowdown in the third quarter, as ongoing Middle East tensions strained supply chains and lifted energy prices. The Federal Reserve reported factory output rose by 0.3% last month, reversing a previously adjusted 0.2% decline in August and aligning with economist expectations. This followed a 1.1% year-over-year gain, though quarterly growth weakened to a 0.7% annualized rate—down from the 5.6% pace recorded in the second quarter.
Manufacturing accounts for roughly 9.4% of the US economy, and while investments in AI infrastructure and inventory rebuilding have temporarily bolstered production, multiple risks persist. Rising energy costs, trade frictions with Canada, and tighter borrowing conditions could erode these gains. Diesel prices reached historic highs as the US-Israeli conflict with Iran persisted, with analysts cautioning that increased expenses for goods, including food, may reduce consumer spending.
Output of durable goods inched up 0.1% in September, driven by primary metals, machinery, and electrical equipment. However, motor vehicle production contracted by 3.0%, pulling the sector downward. Over the quarter, durable goods output grew 3.8%, partly due to a 28.4% surge in semiconductor and electronic component production linked to AI-related investments. Meanwhile, non-durable manufacturing rose 0.4% month-over-month, supported by printing and chemical production, though it declined 1.6% in the third quarter.
Mining output increased 0.2% in September and expanded 5.0% over the quarter, while utility output jumped 3.5% amid reduced demand. Utilities saw a 14.8% quarter-over-quarter surge. Overall industrial production rose 0.7% in September, up 2.2% year-over-year, though its growth rate slowed to 2.8% annualized in Q3, half the 4.8% pace of the previous quarter.
Factory capacity utilization reached 76.9% in September, up from 76.4% in August, though it remained 2.5 percentage points below the 1972–2025 average. Manufacturing utilization stood at 75.9%, down 2.3 percentage points from its long-term norm. The figures indicate factories are operating near full capacity but are struggling to maintain growth amid external pressures.
Economists note that while AI-driven demand for semiconductors and machinery has provided a short-term boost, broader economic uncertainties, including geopolitical risks and inflation, could undermine sustained recovery. The Federal Reserve’s latest data suggests manufacturing remains resilient but vulnerable to disruptions in global trade and energy markets.
