This is definitely a thing: https://en.wikipedia.org/wiki/Bioenergy_with_carbon_capture_and_storage https://en.wikipedia.org/wiki/Bioenergy_with_carbon_capture_

This is definitely a thing: https://en.wikipedia.org/wiki/Bioenergy_with_carbon_capture_and_storage https://en.wikipedia.org/wiki/Bioenergy_with_carbon_capture_... In theory it's energy positive: burning the crop can produce energy.