The article lacks a crucial bit of context: particularly in the North and Center of Portugal, the last 8 months have been even rainier than usual (many areas already over 2000mm of rain in this period, instead of the 1000-1500mm that would be normal), favouring of course hydroelectric power generation, which accounts for a huge percentage of the renewable total.

Not to dismiss this great news, but the country is still a long way from being 100% renewable on a continuing basis. There's however a huge untapped potential in solar, so that goal is reachable if the investment happens (and grid storage becomes cheaper).