UPDATE 1-Cuba says Gustav damaged more than 90,000 houses

(Updates, adds details)

By Jeff Franks

HAVANA, Sept 1 (Reuters) - Cuba said on Monday more than 90,000 houses were damaged or destroyed when Hurricane Gustav tore through the western province of Pinar del Rio on Saturday with 150-mile-per-hour (240-kph) winds.

Officials and state media said 80 percent of the province, which has about 750,000 residents, was without power after Gustav knocked down 80 high-tension towers with cables that distribute electricity throughout the region.

State-run news agency AIN, in a story quoting Cuban Vice President Carlos Lage, said 53 percent of the homes in the hardest-hit areas were affected, most suffering roof damage.

No deaths have been reported from the storm, which passed into the Gulf of Mexico after crossing Cuba and on Monday struck Louisiana, near New Orleans, on the U.S. Gulf Coast.

Power lines were knocked down throughout the stricken area in Cuba, many of them draped across roads and highways.

The tall, metal towers supporting the main electricity cables could be seen lying crumpled across the palm-studded landscape.

On state television, Lage said during a trip to the worst-hit Pinar del Rio towns that power supply was a "very grave and urgent problem."