Adding gas from biomass to the gas grid - SGC

7.1.2 DenmarkThe production of biomass in Denmark is indicated in table 36.PJ/yearContribution ofbiomass %Inputs to power generation 42 10Final energy consumption 23 6Total 65 7Table 36: Biomass production in Denmark (1997) [lit.49]Biogas is produced at 20 large-scale plants and approximately 20 minor farm plants. The largescaleplants produced approximately 50 million m 3 of biogas in 1998, corresponding to an energyproduction of approximately 1.2 PJ. The feedstock is primarily manure (82%) and industrial waste(16%) [lit.50].According to ‘Energy 21’ [lit.51], the use of biomass for energy purposes was expected to increasefrom 50 PJ to some 75 PJ in 1999. Biomass would then comprise almost 10% of the totalconsumption of fuel in the year 2000.By 2012 sustainable energy resources are expected to account for approximately 120 PJ,corresponding to 15% of Denmark’s primary energy consumption of approximately 820 PJ. Amongthe sustainable energy resources, the consumption of solid biomass, i.e. straw (appr. 23 PJ), waste(appr. 32 PJ) and wood (appr. 23 PJ), is expected to make up approximately 80 PJ. According to‘Energy 21’, the consumption of renewable energy is expected to expand to approximately 100 PJ,corresponding to approximately 13% of the total energy consumption in 2005.The main part of the present exploitation of biomass takes place in plants which only produce heat.The objective of the development in the coming years is to increase the use of biomass in powerproducing plants. At the end of 2000 there would still be large, unexploited quantities of raw materialfor use in plants using biogas, landfill gas, and straw. The main part of the present wood resourceswill be exhausted, but it has been decided to increase Danish wood resources by afforestation. Inaddition, increased production of bio-energy, including energy crops, will be required to meet thedemand for biomass after 2005. In the long term, stable supplies of biomass will depend on landuse.In the ‘Follow-up on Energy 21’ [lit.52] the new projection of energy consumption and CO 2emissions shows that there is a deficit of some 3.5% in the national target (a 20% reduction in CO 2emissions in 2005 in relation to 1988 levels). In order to achieve the target in 2005, it is thereforenecessary to implement further initiatives. According to the projected figures, the expansion of windturbines will be greater than expected, whereas the use of biomass will be somewhat less than inEnergy 21.page: 81