CASE STUDY DETAIL: Slovenia 2010

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Slovenia 2010

Project time



Main scope was the producing tools and methodologies to support decision-making and implementation of bio-energy chains in Slovenia. The specific objective of this activity was to upgrade and update the WISDOM Slovenia geo-database to include new reference data, to develop the spatial analysis component, and to allow woodshed analyses.

Institutional settings

Slovenia Forest Service, in the framework of Intelligent Energy Europe's Project "MAKE-IT-BE - Decision making and implementing tools for delivery of local & regional bio-energy chains"


25 m pixels (16 pixels/ha), based on orthophoto-based Land Cover Map 2010.

Demand features

Residential consumption was mapped with great detail based on map of individual buildings, statistics on wood-heated surfaces by Kadastral Obcina and climatic parameters (map of heating days) linked to energy requirements. Consumption by biomass plants and district heating systems was mapped precisely based on individual locations and consumption data.

Supply features

Forestry production potential was based on the allowable cut (legally accessible resource), and on the actual of non-timber assortments (based on the rich Forest Compartments database of 54,363 units, basis of Slovenia forest management. For the analysis of economically accessible supply, the cost of felling and skidding to nearest road was estimated for each forest pixel. Wood residues from sawmills was mapped with high detail (location, quantity and destination.
Non-forest wood supply was based on the 2004 WISDOM TOF survey. Dry non-woody biomass from crop residues was estimated and mapped based on maps of agricultural fields and local crop statistics

Integration features

Supply/demand balance was computed and mapped for a variety of supply and demand categories, including: "legal" balance legally accessible non-timber woody biomass potential from direct and indirect sources and the current consumption of woody biomass for energy and for fiber industries; "actual" balance, considering the actual cut records in order to represent the present situation; "theoretical" balance, calculated on the basis of the mean annual increment (MAI) of the forests and meant to show the full potential of the sustainable resource base; “commercial” balance, based on local surpluses, relative to major wood energy and bioenergy markets. In each case several supply levels were considered, in relation to different road-side market prices.

Woodshed/bio-shed analysis

Implemented for several municipalities, assuming in each case the presence of hypothetical biomass plants.
Implemented for the whole country, with the purpose of defining the suitable locations and capacities for biomass plants, assuming a supply horizon of 30 km.

Integration with other aspects

Not implemented


The upgraded WISDOM database supports strategic and operational planning at all scales, from the rapid profiling of biomass-energy attitudes/potentials of individual municipalities, to national policy formulation. The results clearly show the important role of biomass-energy in Slovenia, its great future potential, considering that the increment doubles the current cutting.


Drigo R. 2011. Upgraded WISDOM Slovenia as supporting tool for bio-energy initiatives in Slovenia. Consultancy report for Slovenia Forest Service. Work Package 4; IEE Project MAKE-IT-BE