Since after 3 years you're beyond the break-even point due to energy use, the old refrigerator should be disposed of rather than given away.
By keeping it in service, it's making somebody poorer. Especially since the person receiving the free 30 year old power hungry refrigerator and keeping it for a decade is the least likely to afford a replacement.
Somebody already disadvantaged will eventually be stuck with structurally higher bills and find it harder to save due to this.
Those that's not your problem it's more a government policy problem.
By keeping it in service, it's making somebody poorer. Especially since the person receiving the free 30 year old power hungry refrigerator and keeping it for a decade is the least likely to afford a replacement.
Somebody already disadvantaged will eventually be stuck with structurally higher bills and find it harder to save due to this.
Those that's not your problem it's more a government policy problem.