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- 2.6 Gas trade: Graph No. 1 – Natural gas consumption in the Czech Republic from 1990 to 2011
- Graph No. 2 – Share of customers in gas consumption Graph No. 3 - Shares of traders on the gas market in 2011
- Table No. 6 – Changes of customers gas provider in 2005 – 2011 Source: Energy Regulatory Office 2.7 Statistical data for 2011
- Table No. 10 Table No. 11 Table No. 12
- Risk assessment results: Infrastructure standards (article 6)
- Determining the single largest gas infrastructure
- Description of the provision of the N-1 standard
- Ability to provide N-1 at the national level
- Ability to provide N-1 standard at the regional level
- Data required for calculating the N-1 formula and N-1 formula: Definition of the calculated area
- Definitions on the demand side: D
- Definitions on the offer side: EP
- N-1 [%] 288.4 269.3 294.5 300.3
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The drop in imports from Norway and the steep increase of imports from Germany + EU, especially in 2011, were caused by the increase of gas traders purchasing natural gas on the spot market with lower natural gas prices, except for high demand in winter, compared to long-term contracts. Extraction from underground gas storages was 877.5 mil. m3 (9,304.4 GWh). Impression to the underground gas storages was 1,818.8 mil. m3 (19,302.7 GWh). The balance of the operational reserve in national underground gas storages at the end of year was 2,581.4 mil. m3 (27,416.5 GWh). The Czech Republic exported natural gas to Poland, Germany and Slovakia (167,3 mil. m3 (1,771.6 GWh)). 2.6 Gas trade: Graph No. 1 – Natural gas consumption in the Czech Republic from 1990 to 2011 Since market liberalization on 1 January 2005, when large customers were allowed to change their gas suppliers, the natural gas market has undergone great development in the Czech Republic. All customers except households were allowed to change their gas suppliers from 1 January 2006 and all customers including households could change their gas suppliers from 1 January 2007. Launching gas trade liberalization in 2007 ended the monopoly of the exclusive gas importer and trader RWE Transgas, a.s. In 2008, natural gas was already being imported to the Czech Republic by five traders and 13 traders were operating on the national gas market. The gas market liberalization continued in 2009 when the number of importers increased to 12 and the number of gas traders involved in delivering gas to end customers increased to 20. In 2010, the number of traders importing gas to the Czech Republic increased from 12 to 19 and the number of national traders increased to 28. Number of national traders was 47 in 2011 and 35 of them supplied hoseholds. Graph No. 2 – Share of customers in gas consumption Graph No. 3 - Shares of traders on the gas market in 2011 Source: OTE According to business companies, the total volume of imported gas in 2011 was 10% lower compared to 2010. Supplies from the European Union and Germany and Russia were used to a much larger extent at the expense of imports from Norway. The vast majority of contracted gas supplies for the Czech Republic from Norway was sold abroad. Full gas market liberalization allowed end customers to change their gas supplier. Since the market was opened on 1 January 2005, this option has been used by customers from all categories at 369,645 delivery points with 84,424 and 361,941 delivery points in 2010 and 2011, respectively. The numbers of customers according to consumption category, who changed their gas supplier from 2005 to 2011, are shown in table No. 6. The table clearly shows that changes of gas suppliers substantially increased in 2011 for all customer categories - wholesale 31.46%, medium customers 16.24%, retail customers 13.46% and households 12.62%. Table No. 6 – Changes of customers gas provider in 2005 – 2011 Source: Energy Regulatory Office 2.7 Statistical data for 2011: Table No. 7 Table No. 8 Table No. 9 Table No. 10 Table No. 11 Table No. 12 Table No. 13 Table No. 14 The supply security standard was provided for the winter months according to § 73a of the power engineering act at a daily volume of 40.766 – 51.585 mil. m3 (430.11 – 544.313 MWh). This applies to gas traders or gas producers delivering gas to protected customers.
According to clause 1, Member States or, where a Member State so provides, the Competent Authority will ensure that the necessary measures are taken so that by 3 December 2014 at the latest, if the single largest gas infrastructure is disrupted, the capacity of the remaining infrastructure, determined according to the N – 1 formula, can satisfy the total gas demand of the calculated area for a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years.
The single largest gas infrastructure in the Czech Republic with the highest gas supply capacity is the entry point in Lanžhot with entry transmission capacity of 156.4 mil. m3/day.
The calculation model will govern by the following formula N-1 according to Appendix No. I of the Regulation: Definition of the parameters of the formula: Dmax = the total daily gas demand of the calculated area during a day of exceptionally high gas demand occurring with a statistical probability of once in 20 years, EPm= the sum of the technical capacity of all border entry points, Pm = the sum of the maximum technical daily production capability of all gas production facilities in the Czech Republic Sm = the sum of the maximum technical daily withdrawal capacity of all storage facilities that can be delivered to the entry points in the Czech Republic, Im = the technical capacity of the single largest gas infrastructure with the highest capacity to supply the Czech Republic. All parameters of the formula are given in mil. m3/day.
According to the requirements of Appendix No. I of the Regulation, the results calculated according to the N-1 formula should be either higher or at least equal to 100%. For 2012 - 2021, the Czech Republic fulfils the minimum requirement of the Regulation and exceeds it by more than 150%. This means that the security of supplies according to the infrastructure standard defined by the Regulation is guaranteed in the Czech Republic, see clause 3.5.
Considering the sturdiness and high quality of the transmission system in the Czech Republic, which fully provides the N-1 standard at the Czech Republic level, it is not necessary to provide the N-1 standard for the Czech Republic at the regional level.
The calculated area is the geographical area for which the N – 1 formula is calculated, as determined by the Competent Authority. In case of the Czech Republic this is the area of the country. The Regulation stipulates that the risk assessment must be updated at the latest 18 months after adopting the Preventive Action and Emergency Plans to be issued by 3 December 12 at the latest, i.e. by 3 June 2014. With regard to these deadlines, the first risk assessment must be performed for 2012, 2013, and 2014 at least.
The Dmax parameter has been defined based on historical consumption data in the Czech Republic over the last twenty years. The day of highest consumption was identified as 23 January 2006 with a value of 67.639 mil. m3/day (15 °C). This value has been recalculated based on the future expected annual consumption of natural gas in the Czech Republic.
The EPm parameter is the sum of all border entry transfer capacities, more specificially the entry transfer capacities at the following points: Hora Svaté Kateřiny - Olbernhau, Hora Svaté Kateřiny – Sayda, Brandov, Waidhaus, Český Těšín and Lanžhot. The Pm parameter has been specifed based on data from the biggest producers of natural gas in the Czech Republic. Individual Sm parameters represent the maximum daily technical and applicable capacities for supplying the underground gas storages in the Czech Republic of the following companies: RWE GasStorage, MND GasStorage and České naftařská společnost. The Im parameter is the infrastructure with the highest capacity for gas supplies i.e. the Lanžhot entry point. Calculating the N-1 formula according to the Regulation: Table No. 15 - Security of supplies in the Czech Republic in 2012-2021 (in mil. m3/day,0°C)
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