Finland’s national aim for annual consumption of
forest chips is 25 terawatt hours (TWh) (equivalent to 13.5 million solid cubic
metres) in combined heat and power (CHP) production and heat production in
2020. On average, the techno-economic potential of forest chips enables
reaching the target at the national level. However, there is a geographical
mismatch between the supply and demand regions. In this study, the regional
balance of potential and demand from 2012 until 2020 was assessed using
GIS-based methods. Economical, technical and ecological constraints were taken
into account when different scenarios for municipality-level potentials were
calculated. The forest chips’ consumption scenarios for plant-level were determined statistically (2012) or predicted (2020) by
assuming that the total consumption of forest chips will reach the 13.5 Mm3.
With help of procurement model, the use of different forest energy fuel types
(stumps, logging residues and small-sized thinning wood) was spread to the procurement ring with the help of GIS
coding. The forest chips’ regional balance map was made by subtracting the
use of heat and combined heat and power plants’ (CHP) forest chips’ consumption from the municipality level potential
data. The GIS-based method for balance calculation requires a significant
amount of computer power but works well for local, municipality, regional and
national-level balance calculations. The study showed that there are enough forest chips to supply the current and future demand when all forest
energy assortments are used efficiently and in a sustainable manner.
However, the results indicate that already at the present rate of forest chip
consumption, in some areas there will not be any extra potential left.
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