

no hydro
I don’t think thats true. Hydro already accounts for about 25% of Alaska’s energy (source). Here’s a list of the hydro plants noaa tracks, including a 20MW dam under construction.
There’s also this massive dam that could power 2/3rds of alaskas energy usage, it gets proposed whenever oil prices rise and then abandoned as soon as oil prices drop again. I’m not entirely sure of practicality of this one but it’s interesting for sure.

















I think it’s a safe bet that an alien race that has figured out FTL and how to identity inhabited planets has also figured out germ theory even if they somehow had a biology similar enough to us to be at risk in the first place.
We were pretty careful with the apollo astronauts when they returned to earth on the off chance some dangerous space virus survived on the moon. https://spacecenter.org/apollo-mission-quarantine-procedures/