Fervo Energy (FRVO) reported a Q1 net loss Monday of $3.72 per diluted share, widening from a loss of $1.02 a year earlier.
Two analysts polled by FactSet expected a loss of $0.10 per share.
Revenue for the quarter ended March 31 was $61,000.
Analysts polled by FactSet expected $30,000.
Shares of the company were up 8.2% in Monday's premarket activity.