Glossary

The energy balance is composed of two large compartments: “Resources” and “Distributions”.

The “Resources” compartment mirrors the sources producing energy resources, while the “Distributions” compartment – the main distribution and consumptions directions.

The “Resources” compartment of the energy balance contains information on creation of energy resources:
- production of primary energy and recovered energy;
- import;
- stocks at the beginning of the period.

Production of primary energy covers the energy obtained from the exploitation of energy sources existing in nature (in deposits, forests, water flows, etc.). It can be used as such or after a preliminary processing (sorting, washing, purification, etc.) and does not change their initial structure, but only improves the quality to be used as fuel or raw material for producing other combustible or non-combustible products. The primary energy production also covers production of hydro-electrical energy, solar energy, geo-thermal energy, wind energy, biogas, etc. Other sources of recovered energy include combustible products obtained as result of some activities, other than those of energy production, such as wood processing, agriculture, etc.

Import covers quantities of primary and transformed energy entered on the territory of the country from abroad. The volume, which transits the national territory, is not included.

Stocks at the beginning of the reference period cover the stocks of primary energy and transformed energy held by producers, distributors, and consumers, as well as those under economic units’ custody.

The “Distributions” compartment of the energy balance covers the quantity of distributed energy resources by destination, losses, export, and stocks of energy at the end of the year. Sector for transformation in other energy sources is presented by quantities of fuel consumed in installations for electricity production (regardless of the installation type and economic unit type), as well as for production of thermal energy. Final consumption of resources for production-technological needs is represented by consumptions meant for industrial production (specified by types of activities), in agriculture, constructions, transportation, illumination, heating, ventilation, water supply, and other economy sectors.

Export covers the quantities delivered from outside of the country. For electricity – export covers the quantities delivered by the energy system. The electricity transiting the country is not covered.

Losses cover:
- for electricity: technological consumption in transportation, transformation, and distribution installations;
- for thermal energy: quantity of thermal energy from used steam and condensation which is not returned to the steam boilers; thermal energy as hot - water which is not returned to the hot water production source;
- for fuel: quantities lost during transportation, manipulation and storage performed by producers, distributors, and consumers.

Stock at the end of the period covers the quantities of fuel and combustible held by producers, distributors, and consumers at the end of the reference period, regardless of their source.