Still, this is exceptionally commendable. Most of the time, when other countries have claimed they ran only on renewables, they have neglected the fact that they are net exporters and were running combustion generation across some of their network. The total renewable generation was greater than the total demand, but some of their generation was combustion and the excess passed off to other countries, with a bit of number fiddling to say that they were 100% green. With this, Portugal didn’t run any combustible generation, and they still exported to other countries.