Trivial? The "coastal location" is not decisive. What matters is if power plants are cooled by water from rivers (affected by global warming - more evaporation and less rain) or by sea water. In New South Wales, coal fired power plants (12,000 MW) are cooled as follows

20% from Cox River
40% from Hunter River
40% from sea water

"The water shortage across eastern Australia is now so acute it has begun to affect power supplies, and the country is at risk of electricity shortages next year."

http://www.smh.com.au/news/environment/power-cuts-bigger-bills-on-the-wa...

Duh.

This has little bearing on future siting of australian nuclear power plants.