41.   The quake toppled three houses and knocked down utility poles, causing blackouts.

42.   The protests were also sparked by a severe electricity shortage, which has caused daily blackouts throughout the Caribbean country.

43.   The storm knocked down a major power transmission line southeast of Manila Thursday, causing a blackout on the main island of Luzon, officials said.

44.   The record sizzler even damaged crops and caused power blackouts during the Independence Day weekend when people cranked up air conditioners.

45.   Witnesses said an electrical transformer was knocked out, causing a blackout.

46.   A sudden surge in electricity demand has caused frequent blackouts and forced several key industries to shut down.

47.   And even low levels can cause blackouts, Donham said.

48.   The agency said the blackout was caused by an unspecified incident Friday at the hydro-electric plant in Tbilisi.

49.   The explosion caused a blackout over large areas of the country, affecting millions of residents.