Individuals and firms in China, Pakistan, Türkiye, Iran and Saudi Arabia were targeted as part of a broader US pressure campaign against Tehran.
The UAE joins Oman, Iraq, Azerbaijan, Georgia and Turkmenistan in restricting access to Iranian carriers.
Tehran has hinted at retaliation after Georgia and Azerbaijan suspended flights connected to Iran, amid mounting US sanctions targeting Iranian airlines.
The outage is at least the sixth major nationwide power failure this year, according to Al Jazeera, following the imposition of a US energy blockade.