  We present new constraints on coupled dark energy from the recent
measurements of the Cosmic Microwave Background Anisotropies from the Planck
satellite mission. We found that a coupled dark energy model is fully
compatible with the Planck measurements, deriving a weak bound on the dark
matter-dark energy coupling parameter \xi=-0.49^{+0.19}_{-0.31} at 68% c.l..
Moreover if Planck data are fitted to a coupled dark energy scenario, the
constraint on the Hubble constant is relaxed to H_0=72.1^{+3.2}_{-2.3}
km/s/Mpc, solving the tension with the Hubble Space Telescope value. We show
that a combined Planck+HST analysis provides significant evidence for coupled
dark energy finding a non-zero value for the coupling parameter \xi, with
-0.90< \xi <-0.22 at 95% c.l.. We also consider the combined constraints from
the Planck data plus the BAO measurements of the 6dF Galaxy Survey, the Sloan
Digital Sky Survey and the Baron Oscillation Spectroscopic Survey.
