A gas burner system may include a first burner configured to burn gas to produce burned gas in a first portion of the waste gas burner system and a second burner configured to burn gas to produce burned gas in a second portion of the waste gas burner system. A heat exchanger may reside out of the first portion and may be configured to receive heat from the burned gas in the second portion and heat a working fluid of a thermal cycle system. A valve may be configured to control an amount of gas provided to the second burner. The gas may be a waste gas from a process. The thermal cycle system may include an organic Rankine cycle.