I agree with Joe 100% on this. So much so that if you replace "Smart Grid" with "Cyber Security" everything is also true.
If all one had to draw from was the flood of conferences, webinars, and advertisements, it would appear that CyberSecurity is a very recent invention that will be achived en-masse in the near future. In reality, elements of CyberSecurity first appeared in the 1998-2000 time-frame. Additionally, decades old best practices will continue to be used in "CyberSecurity" for at least the next 5-10 years. Until about 6-8 months ago, domain knowledge was a given for those participating in the "CyberSecurity." Now, domain knowledge doesn’t seem to be a requirement.