Back on subject, I like my 555. I did have one double with it but have not been able to repeat it since, I did read somewhere that someone had swapped out springs and the problem went away.[/left]
Do you know which spring or where you saw this information?
Back off topic, clean energy doesn't control frequency, with every KW of clean energy that is produced, "dirty" energy is required to alter its frequency so it can be placed on the grid and transported and used.
I grew up in coal country. Have family that worked the coal mines and coal power plants. My father worked for coal powered plant as an electrical engineer and an environmental engineer. The emissions from coal powered power plants now emit less than 1% of the pollution that they did in the mid 80s. Coal will rise again, but only when natural gas prices go up again if plants are not forced out of business by arbitrary political policies.