Production of bio-fuel, electricity and heat through gasification of waste

Up to 20% of the electricity in Denmark comes from wind power and the goal is to increase the percentage. This puts great demand on the flexibility of the remaining energy system. In Denmark 27% of the waste produced in 2004 was incinerated mainly in CHP plants delivering power as base load. In order to increase the flexibility of the system a project is analysed, were waste is gasified and then used either for heat and power production or for bio-fuel production depending on the price of electricity. A national energy system analysis of the technology is carried out using the deterministic simulation model, EnergyPLAN, developed at Aalborg University.
The analysis shows that the gasification project shows great potential with regards to saving fossil fuel when the syngas for combined heat and power production and it provides the cheapest CO2 reduction when used for transport fuel, compared to other waste handling alternatives.