The Simpsons (1989)

S21E19 The Squirt and the Whale

The Simpsons opt for a budget-friendly energy solution by installing a wind turbine in their backyard. However, when Homer discovers that some of the generated power is being sent to the local utility, he makes the drastic choice to cut his home off from the grid entirely, relying solely on the inconsistent energy source. Meanwhile, a fierce storm washes a stunning 150-foot blue whale onto the shore, prompting Lisa and Homer to join forces in their mission to save the stranded giant.