If the nuclear plants are really needed by 2037, it's time to get started with the build process right away.  Allowing for the extended time it takes our government to even start doing anything of significance, plus the reported build times for nuclear plants (or, in SA, even for conventional coal-fired plants, for that matter), with just a bit of luck, we may then just see the plants coming on-line when needed.  After all, 2037 is only 20 years away...