Electricity and Heat Generation and Distribution in the CR
Methodology | Contents |
The CzSO divides electricity and heat sector into two groups according to the NACE code, under which the respective unit is registered in the Business Register. Units registered in the NACE code 401 and 403 (with branch activity corresponding to electricity and steam and hot water production and distribution) are filled in the first group. Units registered in other NACE code are filled in the second group. The first group almost corresponds to the former category public plants, the second one to the autoproducer plants. The list of all units registered and classified in the NACE 401 and the list of important units in the NACE 403, which presented the questionnaire EP 10-01 for 2004, is given on page 5. In this time it is difficult to divide electricity and heat production and distribution into public plants and autoproducer plants sectors because, during privatisation some units became independent bodies and they are classified under their main activity into category electricity and steam and hot water production and distribution. Energetický regulační úřad – ERÚ (Energy Regulatory Office - ERO), which at present compiles balances in electricity area on the Czech Republic level, does not define public and autoproducer.
CzSO processes electric energy balances from the statistical point of view, while other subjects provides technical and supply balances. CEZ had provided Czech Republic electricity balances till the1999, since the 2000 to the first half of the 2001 Ústřední elektroenergetický dispečink - ÚED (Central Dispatch Centre - CDC) and in this time ERO. Till 1998 the CzSO electricity production data were lower than data published by CEZ. The CzSO data for 1999 on electricity generation are higher, but CDC and ERO data for 2000, 2001, 2002, 2003 and 2004, when CDC and ERO precised and improved list of statistical units and estimated missing data, are significantly higher than CzSO data. Discrepancies between data presented by the CzSO and CDC, were caused, first of all, so that CzSO did not estimated missing data. We consider CEZ, CDC, ERO data as more precise data and therefore they are used in all next CzSO publications. This publication shows results of statistical survey in way, in which data were collected. .
Discrepancies between data presented by the CzSO and ERO (CDC, CEZ)
| Electricity gener. - GWh | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 |
| ERO (CDC,ČEZ) | 58882 | 58705 | 60847 | 64257 | 64598 | 65112 | 64368 | 73466 | 74647 | 76348 | 83227 | 84333 |
| CzSO | 58769 | 58589 | 60685 | 64188 | 64516 | 65029 | 64506 | 72699 | 74038 | 76023 | 83004 | 83953 |
| Discrepancy | -113 | -116 | -162 | -69 | -82 | -83 | +138 | -767 | -609 | -325 | -223 | -380 |
| Discrepancy in % | -0,19 | -0,20 | -0,27 | -0,11 | -0,13 | -0,13 | +0,21 | - 1,05 | -0,82 | - 0,43 | -0,27 | -0,45 |
Because there is no subject in Czech Republic, which processes national heat balance sheet, there is no comparison between collected data and other sources. That is why heat data are presented in forms. in which they were collected.
Installed capacity:
The highest capacity reached by machine set permanently, under maintaining basic parameters.
Attainable capacity:
Capacity installed decreased by breakdowns of permanent nature.
Available capacity:
The highest capacity reached with respect to all technical and operational conditions, i.e. attainable output decreased by temporary breakdowns.
Electricity generation:
Production of power measured at the terminal connectors of generators.
Own consumption of electricity used for electricity generation:
The sum of electricity consumed for pumping water, transporting and preparing fuel, etc. (energy consumed for pumping is not included).
Electricity imports, exports:
Invoiced imports and exports were substituted by customs declared ones in 1994 (including international balance); imports and exports as measured represent the amount of electricity that crossed the state border and relates only to the neighbouring countries regardless of the country of destination or origin (imports and exports balance = imports minus exports).
Specific fuel consumption used for electricity production:
Fuel burnt divided by electricity produced in GJ and electricity production in MWh.
Heat generation in boilers:
The amount of heat obtained by burning fuel in individual steam generators.
Heat delivery from boiler room:
The amount of heat delivered from boiler room used for electricity and heat generation.
Own heat consumption in boiler room:
Difference between heat generation in boilers and heat delivery from boiler room.
Net heat production (heat delivery to be used for supply):
Heat delivery from boiler room decreased by heat used for electricity production (heat intended for sale, as well as for use in own enterprise of public energy industry or autoproducer plant).
Note: Table 1a gives electricity production and own electricity consumption grossed to data by the CEZ and CDC and ERO CR. Table 1b (imports and exports as measured) contains CEZ data, since 2001 CEPS (transmission company). All the other tables show data collected by statistical questionnaire EP 10-01.