Interestingly there used to be a power station near me in Hastings that was powered by Avons. It didnt run very much because when it did, it made a hell of a racket and was in a built up area. Many years later it was stripped and lay derelict till set fire.

I was on site for seven days following the fire running the environmental cleanup and found lots of Rolls Royce correspondence on these engines. I believe they were in banks of four each bank running a turbine. Engines had long gone though.