> Once initialized, both processes produce net energy. For typical inputs, the energy required to run a "fast" pyrolyzer is approximately 15% of the energy that it outputs. Modern pyrolysis plants can use the syngas created by the pyrolysis process and output 3–9 times the amount of energy required to run.

Wow, that's impressive. I had not heard about this before, and I'm impressed that this is a sustainable process that may produce durable carbon sequestration. Thanks for the tip!