General Motors is teaming up with Reliant Energy to offer free nighttime charging to some Chevy electric vehicle owners in Texas.

Chevy owners who enroll in Reliant’s EV charging plan will receive free nighttime charging through monthly bill credits that offset charges incurred between 11PM. and 6AM, the companies said. Customers must also designate an EV to receive the charging credit through GM Energy’s Smart Charging Portal. (GM Energy is the automaker’s home energy subsidiary, and Reliant is a subsidiary of NRG Energy.)