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That's what I assumed they meant too, but I would question whether biomass really counts as renewable in quite the same way as solar/hydro/wind. It's a pretty broad category that can hide a lot of sins.
http://blogs.ei.columbia.edu/2011/08/18/is-biomass-really-renewable/
In that diagram, solar + wind + biomass > 50.
R4 must have fucked it.