This report from the Guardian online.
"As recently as 2013, renewables provided only about 23% of Portugal's electricity. By 2015 that figure had risen to 48%." Hydro, wind and solar. In February 2016 they were at 95% renewables.
And no, they did not build a lot of big new hydro dams in 2014 and 2015, nor did they cut their electricity usage in half!
And even if most of the increase in renewables is wind and solar, they did add 260MW to an existing hydro/pumped storage plant in January 2013 -- and storage allows them to use renewables to get to such a high percentage.