CARB At-Berth Compliance

California Air Resources Board At-Berth Regulation - container, refrigerated-cargo, cruise, ro-ro, and (from 2027) tanker ships calling at California ports must connect to shore power or use an approved control technology within 2 hours of docking.

CARBCaliforniaAir quality

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{ComplianceFraction} = \frac{H_\text{connected}}{H_\text{at berth}}

Symbol	Meaning	Unit
$ComplianceFraction$	Share of at-berth hours on shore power / CAECS	fraction
$H_\text{connected}$	Hours connected to shore power or approved CAECS	h
$H_\text{at berth}$	Total hours alongside, net of first-connection grace window	h

Source: California Air Resources Board - [Control Measure for Ocean-Going Vessels At Berth](https://ww2.arb.ca.gov/our-work/programs/ocean-going-vessels-berth-regulation); 17 CCR §93130 - At-Berth Regulation

In short

Track CARB At-Berth Regulation compliance for California port visits - OPS + CAECS.

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