The charging stations include 480-volt direct current (DC) fast-charging technology, which can add about 30 miles of range in approximately 20 minutes, along with 240-volt Level 2 charging features, which charge more slowly (25 miles of range in about an hour). The first installation is at a Walgreens store; another 70 are planned for the area by the end of the year with 50 planned for Houston. NRG Energy says about half of all the charging stations will be in place by the summer at host locations including Best Buy, Crescent Real Estate, Gallery Furniture, H-E-B/Central Market, Memorial City Mall, Park 'N Fly, Spec's Family Partners and Walgreens. It is also planning to electrify the Interstate 45 corridor that connects the two cities next year. The utility is also plugging the fact that wind and nuclear power (domestically sourced) are driving the chargers.
The video below is from the press conference last week.