Hello! Yes, you are right - observability and APM have both been around for many decades, but the incarnations that most people are familiar with are the ones that emerged in the 2010s.
My intention wasn't for this post to be a comprehensive historical record. That would have taken many more words & would have put everyone to sleep. My goal was to unpack and analyze _modern observability_ - the version that we are all dealing w/ today.
It really doesn't tell what really happened:
-This was only due to hydro production...
-The amount of rain that fell was consistent along those days, which is definitely not usual.
-The energy produced was mainly exported to Spain, but at ZERO or even NEGATIVE euros.
Does this help? Doesn't seem to me! And besides having to pay full price to the renewables producers (while exporting the same energy at ZERO), which amounts to a significant energy deficit, they are talking about even more H2 or whatever schemes??? This is the reason why Portugal has had one of the biggest rises of electricity prices in Europe over the last 15 years...
In addition, the title "Portugal just ran on 100% renewables" is inherently misleading because it implies the whole country operated free of fossil fuels and should really be "Portugal's electrical grid just ran on 100% renewables". Often less than half of a country's energy usage passes through the grid, with more than half of it being fuel in vehicles, fossil fuel heating, etc.
That's a real leap to think anyone given that title would assume for six days all vehicles in the country were swapped to electric. Specific to the absurd, implied context isn't misleading.