On July 31, 2012, CBC shut down all of its approximately 620 analogue television transmitters, following an announcement of these plans on April 4, 2012. This reduced the total number of the corporation's television transmitters across the country to 27. According to the CBC, this would reduce the corporation's yearly costs by $10 million. No plans have been announced to use subchannels to maintain over-the-air signals for both CBC and SRC in markets where the corporation has one digital transmitter. In fact, in its CRTC application to shut down all of its analogue television transmitters, the CBC communicated its opposition to use of subchannels, citing, amongst other reasons, costs. CBC/R-C claims that only 1.7 percent of Canadian viewers actually lost access to CBC and Radio-Canada programming due to the very high penetration of cable and satellite. In some areas (particularly remote and rural regions), cable or satellite have long been essential for acceptable television.