FACTBOX: Gustav cuts US oil, gas, Louisiana power

(Reuters) - Hurricane Gustav, the first big threat to U.S. Gulf of Mexico energy and port infrastructure since Katrina and Rita in 2005, made landfall west of New Orleans Monday morning.

The following outlines the impact on the energy sector:

*****HIGHLIGHTS*****

*100 percent of U.S. Gulf of Mexico oil output shut

*95.4 percent of Gulf of Mexico natgas output shut

*27 percent of U.S. refining affected, 11 percent shut, 16 percent at reduced rates.

*433,600 Entergy customers lose power

*No damage assessments yet

*US waives gasoline standards in parts of Texas and Louisiana, ready to release emergency crude

*****CRUDE OIL, NATURAL GAS*****

*100 percent of U.S. Gulf of Mexico's 1.3 million barrels per day crude output shut as of Sunday, according to U.S. government.

*95.4 percent of the Gulf's 7.4 billion cubic feet per day natural gas output shut as of Sunday.

*****REFINING*****

*Ten refineries with capacity of 1.9 million bpd shut

*Eight refineries with capacity of 2.8 million bpd at reduced rates

REFINERIES NOT PRODUCING FUEL: