A study on Agroforestry and GHG emissions by Mr. Chandrashekar from Karnataka, India which was publishedin the Agricultural Engineering International section of the CIGR Journal in September 2012 came to the following findings:
Pongamia Pinnata is one of the promising tree species suitable for providing oil for biodiesel production.
Non-renewable energy requirement of Pongamia biodiesel system is twenty-eight times lower than that of fossil diesel.
Acidification and eutrophication potential of Pongamia system was found to be nil.
Expanding the Pongamia biodiesel system to include biogas production from seed cake exploits the energy available in the system.
One hectare of Pongamia plantation is capable of completely sequestering the CO2 released during the life cycle (1.5t/ Hec) with additional sequestration potential of up to 1t/ Hec.
The above aspects were significantly superior in Pongamia system when compared to Jatropha biodiesel system.
The above results were measured on natural Pongamia.
Based on the above results, there would no longer be any greenhouse gas emissions if fossil fuel were to be replaced with biofuel from Pongamia agroforestry. On the contrary, the process sequesters more carbon than the carbon emission from all parts of the process of making the biofuel including feedstock growth and distribution.