The tonnage has increased from 160,000 tonnes per year to a maximum of 243,000 tonnes whilst maintaining the same footprint and building volume. The increase in throughput reflects a number of factors.
First, during the development of the project, there has been an increased focus and effort on removing certain materials from waste streams, which NREL supports, with plastics being a recent example. This reduces the energy content in the residual waste, as a result we forecast a different maximum volume.
Second, the more established combustion grate EFW technology offers an improved economy of scale compared to the original proposals for gasification solutions.