Elon Musk dismisses 350 kW stations as a "children's toy."

Tesla Motors CEO Elon Musk has hinted at a significant upgrade to Supercharger stations.

The current network provides up to 120 kW of charging power per vehicle, providing around 170 miles of range in as little as 30 minutes.

Other companies are already working on 'ultra-fast' charging standards. The most notable example -- championed by BMW, Daimler, Ford and VW Group -- raises the bar to 350 kW.

Responding to a Twitter post regarding solar arrays, Musk said "there are some installed already, but full rollout really needs Supercharger V3 and Powrpack V2, plus SolarCity." When asked if V3 would be equivalent to the 350 kW systems, the executive joked "a mere 350 kW ... what are you referring to, a children's toy?"

The company has not provided more details such as expected charge times, but Electrek speculates that Tesla could be eyeing California Air Resources Board credits that apply only to vehicles that can provide over 300 miles of range and recharge to 95 percent in just 15 minutes.