Deezer 21 December, Deezer announced a new service level offering two hours of free, ad-supported music streaming a month, available to users worldwide, the company's first free music streaming service outside France. CEO Dauchez said that Deezer was also looking for a partner to introduce service in the United States, who was "able to provide us with a significant volume of subscribers" to help offset what he called the "unbelievably high" costs of entering the US market. As of December 2012, Deezer had about three million users paying for subscriptions, out of a monthly active user base of about seven million,
Tidal barrage pressure). When the water level outside of the basin or lagoon changes relative to the water level inside, the turbines are able to produce power. The basic elements of a barrage are caissons, embankments, sluices, turbines, and ship locks. Sluices, turbines, and ship locks are housed in caissons (very large concrete blocks). Embankments seal a basin where it is not sealed by caissons. The sluice gates applicable to tidal power are the flap gate, vertical rising gate, radial gate, and rising sector. Only a few such plants exist. The first was the Rance Tidal Power Station, on the Rance river,