But no wind power does not work in large scale in a electric system. The problem is that you need to have a lot of extra power and power electronics to stabilize the effect of wind power. It disturbs the frequency of the electricity in the network and you have to balance it with other sources you have complete control over to keep the power stable.
When the Swedish energy department made a study they found that we can't have more than 10 TWh of wind power (7%)[0]. There is one study from one group that says that we can have up to 30 TWh (21%)[2], but if we are realistic it's probably in the middle. This is things my professors in wind power told us, and they really like wind power.
Sorry the sources are in Swedish, but I really advice you to look into the subject before calming that it's all perfect.
[0] http://www.svk.se/siteassets/om-oss/rapporter/20130313-integ...
[1]http://fof.se/tidning/2012/7/tal-elnatet-mer-vindkraft Lennart Söders forskargrupp.