The balance between the drivers and the barriers for a potential commercial AD project is primarily centered on the financial economics of the AD system to be installed, which includes the capital and operating cost, the cost of the feedstock (e. g., the cost of acquisition, transportation, preparation, or alternative disposal), and the revenues and credits that can be realized from AD operations. To tip the balance towards the drivers, the capital and operating cost need to be minimized while the revenues and credits need to be maximized. More efficient, cost-effective, reliable, and versatile AD technologies are needed to strengthen key drivers and diminish many of the uncertainties related to AD technologies. However, a bet­ter understanding of the microbiological underpinning of AD processes is required to develop such AD technologies. Additionally, incentives from governments and public support are also important to encourage AD implementation.