[KarlInOhio]

Each salmon will be caught as it enters the river and an empty rechargeable batter and a generator will be attached to it. As it swims upstream it will charge the battery. Then the batteries will be retrieved when they reach their mating ground and sent to San Francisco to run their city lights.

[Dr. Sivana]

Each salmon will be caught as it enters the river and an empty rechargeable batter and a generator will be attached to it.

I know it was a typo, but I think I like the batter idea even more! With some malt vinegar and a side of chips and a pint of Bass Ale, please!

[Night Hides Not]

Each salmon will be caught as it enters the river and an empty rechargeable batter and a generator will be attached to it. As it swims upstream it will charge the battery. Then the batteries will be retrieved when they reach their mating ground and sent to San Francisco to run their city lights.

As I see it, there's only one problem with your analysis. Hundreds of seals, sea lions and otters will die due to ingesting those batteries when they eat those salmon.