Otto Energy Ltd. revenue for the last year amounted to 33.40 M USD, the most of which — 28.97 M USD — came from its highest performing source at the moment, Oil, the year earlier bringing 35.04 M USD. The greatest contribution to the revenue figure was made by United States — last year it brought Otto Energy Ltd. 33.10 M USD, and the year before that — 38.59 M USD.