"Department of Energy (DOE) will partner with National Laboratories to explore the feasibility of fast charging up to a rate of 350 kW, which could charge an electric car in as short as 10 minutes."
Current Tesla's rate is 120 kW in the US or 170 miles per half hour (theoretical 145 kW in UK.)
Current public non-Tesla chargers are mostly 50 kW although 100 kW is possible.
CHAdeMO Foundation is promising 150 kW to be deployed in 2017 and it is studying for 350 kW as well.