For some statistics, "U.S. electricity customers averaged seven hours of power interruptions in 2021." [1].
At first I couldn't find equivalent European statistics, until I changed my search to "minutes", which is how Europe measures outages. The EU average in 2010-2014 was just over 2 hours, and as low as 29 minutes in Germany, or 20 here in Denmark.
That isn't the relevant statist. We are talking about transformer explosions not all causes power outages. Transformers do explode, but not very often.
Most power outages are broken wires. According to my utility underground wires break more often than above ground, and when they break are a lot more expensive to fix. (They are trying to make a point so this might need some salt, though i don't care enough to look up what)
At first I couldn't find equivalent European statistics, until I changed my search to "minutes", which is how Europe measures outages. The EU average in 2010-2014 was just over 2 hours, and as low as 29 minutes in Germany, or 20 here in Denmark.
[1] https://www.eia.gov/todayinenergy/detail.php?id=54639
[2] https://neon.energy/Neon_Data-quality_European-Commission.pd... (22nd page, figure 5)