Mayer Brown announced Wednesday that it has formally hung up a shingle in Mexico City, where it will serve clients in the oil, gas and power industries as they capitalize on Mexico’s unfolding energy sector reform.

The firm’s move flows from Mexico’s move last year to end a decades-old state monopoly in the energy sector and welcome private investment, according to Dallas Parker, leader of Mayer Brown’s Mexico Energy Reform initiative and its corporate and securities practice in Houston.