This is a fascinating topic if anyone is interested from a historical perspective.

The soviets had Beta-M powering more than two dozen lighthouses across the union at some point. https://en.wikipedia.org/wiki/Beta-M

It's mentioned in the article as well

"Another good use for nuclear batteries is to supply power in remote locations on Earth. Beginning in the 1970s, for example, the Soviet Union deployed over 1,000 RTGs in northwestern Russia to power its uncrewed lighthouses, radio beacons, and weather stations. Most of these batteries ran on strontium-90, and each weighed about 2,000 kg. The United States has deployed hundreds of similar systems for remote power both on land and on the ocean floor, particularly for remote monitoring sites in the Arctic."

And some very bad consequences for scavengers who came across them and tried to take them apart for scrap metal to sell

It didn’t ruin his life. Having an unstable childhood due to a mentally ill mother and later developing paranoid schizophrenia and a drug addiction (common with schizophrenia) is what ruined his life.