Gran Tierra Energy Inc. revenue for the last year amounted to 636.96 M USD, the most of which — 636.96 M USD — came from its highest performing source at the moment, Oil and Natural Gas, the year earlier bringing 711.39 M USD. The greatest contribution to the revenue figure was made by Colombia — last year it brought Gran Tierra Energy Inc. 636.96 M USD, and the year before that — 711.39 M USD.