There's a short video on the change.gov website where Vivek makes an appearance:
http://change.gov/newsroom/entry/inside_the_transition_technology_innovation_and_government_reform/

Mod-up. It's a great article. SSP is a ways off from being economical viable for domestic/mass-consumer use, there are other applications (i.e. military) where the current cost/kWh is higher and SSP is more feasible in the short-term.