ONE GAS INC revenue for the last year amounted to 40.29 B MXN, the most of which — 36.38 B MXN — came from its highest performing source at the moment, Natural Gas, the year earlier bringing 47.01 B MXN. The greatest contribution to the revenue figure was made by United States — last year it brought ONE GAS INC 40.29 B MXN, and the year before that — 50.28 B MXN.