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Case studies

The anticipated long-term balance between electrify supply and demand in 2018 was analysed for four case studies, which is based on the requested self-sufficiency of the Czech Republic to meet the demand for electricity and ensure reliable operation of the whole system. The Conceptual case study analysed the situation for development under the State Energy Policy. The Renewable case study envisaged major development in renewable sources and tested whether, under what conditions and to what extent an extreme development of RSE could replace generation using nuclear sources. The Gas case study analysed the manner in which nuclear generation could be replaced by gas-based electricity production while maintaining the SEP intentions during the development. The Zero case study tested operation of the power system without investment in new electricity sources and in the case of the gas industry, operation without new storage capacities.


Zero case study

The Zero case study in case of electricity industry anticipates only the operation of the existing sources and their gradual future decommissioning according to the known data from their operators. No new sources are considered here, with the exception of those that are nearing completion while the study is being prepared, or those that are already under a test run, and their commissioning can be rationally considered feasible. These are, in particular, sources directly linked to industrial production (autoproducers), whose commissioning is important locally, but not within the entire system. The results of the Zero case study are shown in the following figure for several scenarios of shutting down existing resources.

Surplus and lack of available capacity in electricity industry

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The Zero case study in case of gas industry is based on an analysis of the baseline state of the solution when the necessity of new storage capacity is detected for the anticipated demand for gas. The aim is to indicate the year when the ratio of the total gas storage capacity to the total gas consumption exceeds the range specified in the State energy policy, i.e. 35 to 40%. Calculations of the Zero case study are the first step to the solution which will be used for drawing up subsequent case studies (with sufficient storage capacity). Except for the existing storage facilities or storage facilities which are newly in operation and the capacity of which will be increasing over time (Dambořice), or except for connection of storage facilities situated within the territory of the Czech Republic but currently used for another system (Dolní Bojanovice), no new storage facilities are anticipated. These capacities are applied in all other case studies and cause an increase in the capacity to consumption ratio at the beginning of the analysed period. The storage capacity to consumption ratio without new storage facilities is indicated in the following figure.

Storage capacity to consumption ratio

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Conceptual case study

The objective of this case study is to propose measures to meet the requirements of the State Energy Policy (SEP). The Conceptual case study is based on the SEP objectives, specifies the development of Czech power system according to its Optimized scenario and the opinions of the representative of the Czech decision-making sphere (in particular the Ministry of Industry and Trade) in 2018. This case study is characterized by the construction of nuclear power plants at the both existing locations and a rational development of the RES. Gas-fired sources are also added. The installed capacity for the electricity industry is shown in the following figure.

Conceptual case study – installed capacity

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The expected development of gas demand and storage capacity is shown in the following figure. Gas storage facilities are anticipated just as in the Zero case study, and in addition to that, the need for further capacity was indicated in view of the withdrawal and injection parameters, in both cavernous and depleted-field type of storage:

  • 200 mcm as of 2030 (cavernous),
  • 500 mcm as of 2037 (depleted-field),
  • 600 mcm as of 2040 (depleted-field).

Demand for gas and storage capacity – Conceptual case study

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Renewable case study

The aim is to propose such measures that would maintain the Czech Republic's self-sufficiency in meeting the demand for electricity even if no new nuclear blocks are commissioned in the Czech Republic. The resulting deficit is solved primarily by the renewable energy sources. To ensure system operability, the gas-fired units (SCGT, CCGT), gas engines (GE) and, to a significant extent, also accumulation units, are added. The installed capacity is shown in the following figure.

Renewable case study – installed capacity

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The expected development of gas demand and storage capacity is shown in the following figure. Gas storage facilities are anticipated just as in the Zero case study, and in addition to that, the need for further capacity was indicated in view of the withdrawal and injection parameters, in both cavernous and depleted-field type of storage:

  • 500 mcm as of 2037 (depleted-field),
  • 200 mcm as of 2045 (cavernous),


Demand for gas and storage capacity – Renewable case study

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Gas case study

The aim is the propose such measures that would maintain the self-sufficiency of the Czech Republic in meeting demand for electricity even if no new nuclear power plants are commissioned in the Czech Republic. The resulting deficit is addressed by gas-fired sources. The installed capacity is shown in the following figure.

Gas case study – installed capacity

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The expected development of gas demand and storage capacity is shown in the following figure. Gas storage facilities are anticipated just as in the Zero case study, and in addition to that, a strong need for further capacity was indicated in view of the withdrawal and injection parameters, in both cavernous and depleted-field type of storage:

  • 200 mcm as of 2030 (cavernous),
  • 500 mcm as of 2037 (depleted-field),
  • 600 mcm as of 2040 (depleted-field),
  • 1,000 mcm as of 2040 (depleted-field).

Demand for gas and storage capacity – Gas case study

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