Does an RTGs efficiency decrease?

Does an RTGs efficiency decrease? - Clear Light Bulb

I've got a ship with Radioisotope Thermal-electric Generators (RTG), they're the stock PB-NUK variety.

PB-NUK RTG

When I right click on them they say "Efficiency 1.0". In reality RTGs wear out over the course of years - I think it's about 100 years. But I've been on a 4 year exploration of Jool and still my RTGs are 100% efficiency... Do they ever wear out?






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Does an RTGs efficiency decrease? - Five Bulb Lights
Does an RTGs efficiency decrease? - White Windmill
Does an RTGs efficiency decrease? - Solar Panels on Snow With Windmill Under Clear Day Sky





RTGS – The standard in interbank payment traffic




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