A new electricity generation station was planned for construction in the east end of London. This plant was expected to generate up to 60MW of renewable electricity using a range of non-fossil fuels including biomass, waste wood and solid recovered fuel (SRF). The development was split into two phases, each with a capacity of 30MWe. The proposed fuel for the first phase was waste wood from the local area. Whilst the fuel for the second phase was expected to be waste derived from household, commercial and industrial waste.
During preliminary design the Client investigated grate combustion and the practical limits of uncooled grate designs and to what extent the performance envelope may be stretched without introducing risk of premature failure. Cooled grates add to overall house load and it follows that as the net generation is dependent on parasitic load exploring opportunities for reducing this parasitic demand and optimising site layout would be an integral part of determining the optimum grate output.
In a project of this nature, reliant on securing a financial return, it is often essential to complete significant elements of design early in order to demonstrate to potential investors that the technology risks are understood and can be managed. Whilst this project was still in the planning stage the work to develop the conceptual design was successfully demonstrated to be qualifying activity in accordance with the BIS Guidelines.