A continuous biochar carbonizer, comprising: an enclosed combustion chamber having an exhaust stream; a catalytic converter disposed within the exhaust stream; a heat-driven engine thermally coupled to the exhaust stream, downstream of the catalytic converter, the heat-driven engine being configured to use direct heat of the exhaust stream to produce rotary power; a motor-driven feedstock conveyor coupled to the combustion chamber; a motor-driven blower communicably coupled between a fresh air supply and the combustion chamber; an enclosed biochar collection chamber; a motor-driven biochar conveyor coupled between the combustion chamber and the biochar collection chamber; at least one sensor selected from: a temperature sensor disposed within the biochar collection chamber, a volatile gas sensor disposed within the biochar collection chamber, a temperature sensor disposed within the combustion chamber, an oxygen sensor disposed within the combustion chamber, a temperature sensor disposed within the exhaust stream upstream of the catalytic converter, a temperature sensor disposed within the exhaust stream downstream of the catalytic converter, an oxygen sensor disposed within the exhaust stream downstream of the catalytic converter and a moisture sensor disposed within the exhaust stream; and a control circuit coupled to the at least one sensor, to the motor of the feedstock conveyor, to the motor of the blower and to the motor of the biochar conveyor; the control circuit repeatedly: receiving signals from the at least one sensor; and comparing the signals to a set of predetermined values to determine whether any of a set of trigger conditions is satisfied, each trigger condition being associated with at least one of the feedstock conveyor, the blower and the biochar conveyor, and, if any of the set of trigger conditions is satisfied, sending a signal to at least one of the motor of the associated feedstock conveyor, the motor of the associated blower and the motor of the associated biochar conveyor to alter speed of operation thereof, the set of predetermined values having been selected to control quality of biochar delivered by the biochar conveyor to the biochar collection chamber and to balance production of the biochar and energy production by the engine. an enclosed combustion chamber having an exhaust stream; a catalytic converter disposed within the exhaust stream; a heat-driven engine thermally coupled to the exhaust stream, downstream of the catalytic converter, the heat-driven engine being configured to use direct heat of the exhaust stream to produce rotary power; a motor-driven feedstock conveyor coupled to the combustion chamber; a motor-driven blower communicably coupled between a fresh air supply and the combustion chamber; an enclosed biochar collection chamber; a motor-driven biochar conveyor coupled between the combustion chamber and the biochar collection chamber; at least one sensor selected from: a temperature sensor disposed within the biochar collection chamber, a volatile gas sensor disposed within the biochar collection chamber, a temperature sensor disposed within the combustion chamber, an oxygen sensor disposed within the combustion chamber, a temperature sensor disposed within the exhaust stream upstream of the catalytic converter, a temperature sensor disposed within the exhaust stream downstream of the catalytic converter, an oxygen sensor disposed within the exhaust stream downstream of the catalytic converter and a moisture sensor disposed within the exhaust stream; and a control circuit coupled to the at least one sensor, to the motor of the feedstock conveyor, to the motor of the blower and to the motor of the biochar conveyor; the control circuit repeatedly: receiving signals from the at least one sensor; and comparing the signals to a set of predetermined values to determine whether any of a set of trigger conditions is satisfied, each trigger condition being associated with at least one of the feedstock conveyor, the blower and the biochar conveyor, and, if any of the set of trigger conditions is satisfied, sending a signal to at least one of the motor of the associated feedstock conveyor, the motor of the associated blower and the motor of the associated biochar conveyor to alter speed of operation thereof, the set of predetermined values having been selected to control quality of biochar delivered by the biochar conveyor to the biochar collection chamber and to balance production of the biochar and energy production by the engine. receiving signals from the at least one sensor; and comparing the signals to a set of predetermined values to determine whether any of a set of trigger conditions is satisfied, each trigger condition being associated with at least one of the feedstock conveyor, the blower and the biochar conveyor, and, if any of the set of trigger conditions is satisfied, sending a signal to at least one of the motor of the associated feedstock conveyor, the motor of the associated blower and the motor of the associated biochar conveyor to alter speed of operation thereof, the set of predetermined values having been selected to control quality of biochar delivered by the biochar conveyor to the biochar collection chamber and to balance production of the biochar and energy production by the engine.