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SITCSection 7
U.S. imports of electric generating sets with internal combustion piston engines (SITC 71651) totaled $227.0M in April 2026, traded with 28 countries.
Importers of Electric Generating Sets with Internal Combustion Piston Engines paid $15.0M in duties in April 2026 — an effective duty rate of 8.7% on $172.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Electric Generating Sets with Internal Combustion Piston Engines imports of $227.0M in April 2026 ran 30% above the year-to-date monthly average of $174.6M.
Last updated: April 2026 dataGensets pairing an alternator with a reciprocating internal combustion engine — whether spark-ignition (gasoline/gas) or compression-ignition (diesel) — are classified here, with engine type and output rating being the primary commercial and regulatory differentiators. These units serve as standby power for data centers, hospitals, and construction sites, as well as prime power in off-grid applications. Engine displacement and emissions compliance (EPA Tier standards) are critical specification checkpoints for US importers, and several source countries' products have been subject to Section 301 tariff scrutiny.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. The US EPA regulates stationary and portable engine emissions under its nonroad and stationary engine rules. Imported gensets must meet the applicable Tier standard for their engine displacement and intended use category before they can be sold or operated in the US; some states (notably California) impose additional CARB requirements.
The type of prime mover (spark-ignition vs. compression-ignition) and the output rating in kVA or kW are the primary classification drivers within this heading. Importers should ensure technical documentation — engine type, rated output, and whether the unit is self-contained — accompanies the entry to support correct classification and avoid reclassification at the port.
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Monthly import values over time