

That’s the same as asking “How many deaths have seatbelts prevented?”
Just like measuring the effectiveness of the TSA, it is possible to measure the effectiveness of seatbelts.
So yes, you can come up with an estimate of how many excess deaths TSA prevented. (Especially since the government tends to try to convict people who were trying to kill people.)





There are only so many places where grid level pumped storage hydroelectricity works, and the capital and environmental costs are non negligible for most new locations.