I actually had a problem with Swedens approach a few years ago.

The Swedish power grid is a single grid and the idea is: all eggs in one basket, but pay close attention to the basket.

Unfortunately when it comes to datacenter designations, two independent power feeds is required for tier 2 and above. Excluding all datacenters in Sweden.

At least some portions of Canada are also excluded because they have rules that say that only hospitals are allowed to have two independent power feeds. So Ubisofts Montreal Datacenter is in the same building as a hospital...

What do you mean by independent power feeds?

If you mean fed by two different substations it’s not a problem in Sweden at all. Most(every station I’ve ever worked in) medium/high voltage substations in Sweden are fed by at least two separate lines. Same as any other country I’ve built substations.

That’s interesting, we visited many datacenters across Skåne and none of them said anything higher than T2 is possible due to the single power grid.

Does Bahnhof and Tele2 know about your stations?

Just curious what you mean by independent power feed. If you mean fed by two separate power plants, you are right, but I don’t see how that would be possible in any country.

My next work assignment literally starting in a week is building a high voltage substation for a data center(customer is well known on HN) so that’s why I’m curious

How does that work in for example the US? The Texas grid is separate from the rest of the continent, no?

The "two separate flow" refers not the national/regional grids but instead to the specific substations, the idea being that if a substation was tripped (due to chance or for maintenance) you can still get electricity from the alternate route.

You can connect to separate energy providers - such that if one provider or their transmission infrastructure goes down, you're still connected to and online with the other provider.

There are different generations/eras of "towers". The ones dating from NMT and the cold war have their own little shrapnel-protected bunkers and most likely UPS:s.

The latest ones which hang on every roof in cities might be turned off, but it just means phones scan until they find 2G/3G signals.

I remember in the several hour long power outage in Southern Sweden in 2003 the GSM network was still up

Sweden is not on the same power network as most of the rest of Europe.

It's a factor in the recent price spike - Swedish companies are selling surplus power to Europe at the prices these are prepared to pay.

"Surplus power" is not accurate. It's more accurate to say that the transfer cables are mostly at full load because the European demand is so large. In effect, this means European prices in Scandinavia.