correct. about as long as a typical academic research career, with an extra margin thrown in for emeritus positions to be on the safe side. get the boffins' grand kids through college etc. anyway, there won't be grids in 50 years. or if for some sentimental reason there still are 95% of us will be off the failure prone things while making, storing and using our own uninterruptible power safely at home. much sooner really. i can't even imagine being on the grid in 10 years let alone 49. no way then to distribute the staggering costs for what will be the planet's most expensive and complex power plants.
